Author: "Laboratoire de génie électrique de Paris (LGEP)" / Topic: computingmilieux_miscellaneous - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Laboratoire de génie électrique de Paris (LGEP)"' showing total 896 results

Start Over Author "Laboratoire de génie électrique de Paris (LGEP)" Topic computingmilieux_miscellaneous

896 results on '"Laboratoire de génie électrique de Paris (LGEP)"'

1. Over-coordination and order in hydrogenated nanostructured silicon thin films: their influence on strain and electronic properties

Author: Patrice Mélinon, Christophe Longeaud, Anne-Marie Flank, P. Roca i Cabarrocas, Bruno Masenelli, S. Vignoli, Laboratoire de génie électrique de Paris ( LGEP ), Université Paris-Sud - Paris 11 ( UP11 ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -SUPELEC-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Amorphous silicon, Materials science, Absorption spectroscopy, Silicon, Coordination number, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, Paracrystalline, 01 natural sciences, Condensed Matter::Materials Science, symbols.namesake, chemistry.chemical_compound, 0103 physical sciences, [CHIM]Chemical Sciences, General Materials Science, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Photoconductivity, Nanocrystalline silicon, 021001 nanoscience & nanotechnology, Condensed Matter Physics, chemistry, symbols, 0210 nano-technology, Raman spectroscopy
Abstract: International audience; A set of hydrogenated nanostructured silicon films consisting of Si nanoparticles with a dense phase embedded in an amorphous matrix are analysed by means of several spectroscopic tools. Medium and short range order are determined by Raman spectroscopy and the average coordination versus the hydrogen content is measured from x-ray absorption spectroscopy. The improvement of transport properties such as the normalized photoconductivity with respect to that of hydrogenated amorphous silicon is explained by an inhomogeneous distribution of constraints in the samples. Our results on the order at different scales agree well with the paracrystalline model and suggest a well relaxed host matrix.
Published: 2005
Full Text: View/download PDF

2. Capability Evaluation of Incipient Fault Detection in Noisy Environment : A Theoretical Kullback-Leibler Divergence-Based Approach for Diagnosis

Author: Claude Delpha, Jinane Harmouche, Abdulrahman Youssef, Demba Diallo, Laboratoire des signaux et systèmes ( L2S ), Université Paris-Sud - Paris 11 ( UP11 ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ), Division Signaux - L2S, Université Paris-Sud - Paris 11 ( UP11 ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de génie électrique de Paris ( LGEP ), Université Paris-Sud - Paris 11 ( UP11 ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -SUPELEC-Centre National de la Recherche Scientifique ( CNRS ), IEEE, Laboratoire des signaux et systèmes (L2S), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Delpha, Claude
Subjects: Engineering, Kullback–Leibler divergence, [ INFO.INFO-TS ] Computer Science [cs]/Signal and Image Processing, [INFO.INFO-TS] Computer Science [cs]/Signal and Image Processing, Feature extraction, 02 engineering and technology, [ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing, Fault (power engineering), Fault detection and isolation, 030507 speech-language pathology & audiology, 03 medical and health sciences, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, 0202 electrical engineering, electronic engineering, information engineering, Divergence (statistics), ComputingMilieux_MISCELLANEOUS, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing, business.industry, 020206 networking & telecommunications, Pattern recognition, Noise, Simulated data, Principal component analysis, Artificial intelligence, 0305 other medical science, business, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
Abstract: Process-history based methods are very commonly used for fault diagnosis and detection. However their efficiency is closely related to the quality of the measured data. In noisy environments, they usually fail particularly for incipient faults. This paper is an attempt to determine an analytical model allowing to estimate a theoretical threshold for fault detection based on the Fault to Noise Ratio (FNR). This model is developed using the Kullback-Leibler Divergence (KLD). For feature extraction, the used data are previously processed through Principal Component Analysis (PCA). The model is validated with simulated data and the results are so far very encouraging.
Published: 2013

3. A Theoretical Approach for Incipient Fault Severity Assessment Using the Kullback-Leibler Divergence

Author: Harmouche, Jinane, Delpha, Claude, Demba Diallo, Laboratoire des signaux et systèmes ( L2S ), Université Paris-Sud - Paris 11 ( UP11 ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ), Division Signaux - L2S, Université Paris-Sud - Paris 11 ( UP11 ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de génie électrique de Paris ( LGEP ), Université Paris-Sud - Paris 11 ( UP11 ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -SUPELEC-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire des signaux et systèmes (L2S), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Delpha, Claude
Subjects: 010104 statistics & probability, [ INFO.INFO-TS ] Computer Science [cs]/Signal and Image Processing, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, [INFO.INFO-TS] Computer Science [cs]/Signal and Image Processing, 0202 electrical engineering, electronic engineering, information engineering, 020206 networking & telecommunications, 02 engineering and technology, [ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing, 0101 mathematics, 01 natural sciences, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, ComputingMilieux_MISCELLANEOUS, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing
Abstract: Publication in the conference proceedings of EUSIPCO, Marrakech, Morocco, 2013
Published: 2013

4. An Innovative Control Strategy of a Single Converter for Hybrid Fuel Cell/Supercapacitor Power Source

Author: E Berthelot, Olivier Béthoux, Claude Marchand, Ghislain Remy, Toufik Azib, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris [LGEP], Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 [L2EP], and Laboratoire Génie électrique et électronique de Paris [GeePs]
Subjects: Engineering, 020209 energy, Automotive industry, Proton exchange membrane fuel cell, 02 engineering and technology, 7. Clean energy, fuel cell, [SPI]Engineering Sciences [physics], Power electronics, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Electrical and Electronic Engineering, efficiency and reliability enhancement, ComputingMilieux_MISCELLANEOUS, transports applications, Supercapacitor, business.industry, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 020208 electrical & electronic engineering, Index Terms-Supercapacitor, real-time control systems, power electronics, Control and Systems Engineering, Control system, Frequency domain, InformationSystems_MISCELLANEOUS, Hybrid power, business, Decoupling (electronics)
Abstract: In this paper, an innovative control strategy for hybrid power sources dedicated to automotive applications is detailed. First, an analysis of classical hybrid architectures using fuel cell (FC)/supercapacitors is presented. Then, an analysis of load requirements for automotive applications is proposed. A new control strategy of a single converter, based on a cascaded control loop with a decoupling strategy in the frequency domain, is fully explained. Finally, experimental results on a Ballard proton exchange membrane FC are presented to illustrate the effectiveness of the proposed method.
Published: 2010
Full Text: View/download PDF

5. Modélisation de cycles d’hystérésis: Comparaison de différentes approches pour le modèle de Preisach

Author: Francis Piriou, Eduardo Mendes, Stephane Clenet, Mouloud Feliachi, Yassine Ouled-Amor, Yves Bernard, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Laboratoire de Conception et d'Intégration des Systèmes (LCIS), Université Pierre Mendès France - Grenoble 2 (UPMF)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology, Institut de Recherche en Energie Electrique de Nantes Atlantique EA4642 (IREENA), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Université de Nantes (UN), Laboratoire de génie électrique de Paris [LGEP], Laboratoire d'Électrotechnique et d'Électronique de Puissance (L2EP) - ULR 2697, Laboratoire de Conception et d'Intégration des Systèmes [LCIS], Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 [L2EP], Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Université Pierre Mendès France - Grenoble 2 (UPMF), and Institut de Recherche en Electrotechnique et Electronique de Nantes Atlantique EA4642 (IREENA)
Subjects: [SPI]Engineering Sciences [physics], caractérisation expérimentale, hystérésis, General Medicine, tôles magnétiques, ComputingMilieux_MISCELLANEOUS, Preisach, modélisation
Abstract: International audience; Dans cet article trois approches pour représenter les cycles d’hystérésis avec le modèle de Preisach sont proposées. La première s’appuie sur une expression analytique de la fonction de distribution. La seconde décompose le plan de Preisach en domaines élémentaires. Avec la troisième approche, c’est la forme intégrale de la fonction de distribution qui est utilisée. Pour étudier ces approches, des cycles d’hystérésis de tôles à grains non orientés ont été identifiés et les résultats comparés avec l’expérience.
Published: 2002
Full Text: View/download PDF

6. Estimation of the power flux supplied by an electric arc to Ag-SnO2 electrodes based on cross-section observations of the melted zone

Author: Marina Lisnyak, Philippe Testé, Vladimir A. Esin, François Chaudot, Jean-Luc Ponthenier, Frédéric Houzé, Romaric Landfried, Georges Cailletaud, Aurélien Fouque, Alexandre Bonhomme, Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Unité d'Amélioration des plantes (CL CLERMONT GENETQ), Institut National de la Recherche Agronomique (INRA), Centre des Matériaux (MAT), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Schneider Electric ( SE), Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-SUPELEC-Centre National de la Recherche Scientifique (CNRS), CentraleSupélec-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), ANR-11-IDEX-0003-02/10-LABX-0032,LaSIPS,LABORATORY FOR SYSTEMS AND ENGINEERING OF PARIS SACLAY(2011), and ANR-11-IDEX-0003,IPS,Idex Paris-Saclay(2011)
Subjects: Materials science, 02 engineering and technology, 7. Clean energy, 030226 pharmacology & pharmacy, law.invention, [SPI.MAT]Engineering Sciences [physics]/Materials, Arc (geometry), Electric arc, 03 medical and health sciences, [SPI]Engineering Sciences [physics], 0302 clinical medicine, Optics, law, Instrumentation, ComputingMilieux_MISCELLANEOUS, [PHYS]Physics [physics], business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Cathode, Electronic, Optical and Magnetic Materials, Anode, Electrode, 0210 nano-technology, business, Intensity (heat transfer), Voltage, Electron backscatter diffraction
Abstract: A method is proposed to estimate the characteristics of the power flux supplied to an anode and a cathode in Ag-SnO2submitted to an AC electric arc with a maximal value of the arc current intensity about 400–500 A and an arc duration about 4–5 ms. It is based on the one hand on the observation by optical microscopy and Electron BackScatter Diffraction (EBSD) of the area melted by the arc, thus making it possible to evaluate the depth and radius melted, and on the other hand on a thermal modelling allowing to estimate an equivalent voltage (proportionality coefficient between the intensity of the arc current and the received power) and the power flux surface density.
Published: 2020
Full Text: View/download PDF

7. Evaluating optical and electrical properties of earth-abundant Cu2O layers for PV applications

Author: Nguyen, V.H., Resende, J., Jiménez, Carmen, Nguyen, N. D., Deschanvres, J.L., Favre, W., Laboratoire des matériaux et du génie physique (LMGP ), Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Département de Physique, Université de Liège, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2019

8. Numerical study of flow characteristics and pollutant dispersion using three RANS turbulence closure models

Author: Catalin Popa, H. Zaïdi, L. Ben Ramoul, Guillaume Polidori, Abdelkader Korichi, Institut de Thermique, Mécanique, Matériaux (ITheMM), Université de Reims Champagne-Ardenne (URCA), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Groupe de Recherche en Sciences Pour l'Ingénieur - EA 4694 (GRESPI), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0208 environmental biotechnology, Flow (psychology), 02 engineering and technology, 01 natural sciences, 010305 fluids & plasmas, [SPI.MAT]Engineering Sciences [physics]/Materials, Physics::Fluid Dynamics, Momentum, symbols.namesake, [SPI]Engineering Sciences [physics], 0103 physical sciences, Environmental Chemistry, ComputingMilieux_MISCELLANEOUS, Water Science and Technology, Wind tunnel, [PHYS]Physics [physics], Finite volume method, [SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable, Turbulence, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Reynolds number, Mechanics, [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], 020801 environmental engineering, 13. Climate action, Turbulence kinetic energy, symbols, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Environmental science, Reynolds-averaged Navier–Stokes equations, [SPI.GCIV.EC]Engineering Sciences [physics]/Civil Engineering/Eco-conception
Abstract: The flow characteristics and pollutant dispersion around building are investigated numerically using three RANS turbulence closure models, i.e. Standard k–ɛ model, Realizable k–ɛ and RNG k–ɛ model. Two physical configurations are considered in this study: a single isolated obstacle and two obstacles forming an idealized street canyon. Numerical simulations are performed with OpenFOAM® source code which utilise the finite volume method to solve the transport equations of mass, momentum, turbulent kinetic energy and turbulent dissipation rate. When numerical results were compared to wind tunnel experiments, it was found that the RNG k–ɛ turbulence model yielded the best agreement with experimental data. Moreover, the coefficients of the RNG k–ɛ turbulence model were adapted to better predict the flow characteristics in the urban boundary layer. The results obtained using the appropriate model show good agreement with experimental measurements for velocity flow profile and turbulent kinetic intensity. The prediction of pollutant dispersion reveals that in addition to the Reynolds number, the emission location plays an important role in the pollutant concentration distribution.
Published: 2019
Full Text: View/download PDF

9. Flexible serialized complementary coils for the detection of moving LF RFID tags

Author: Elrifai, Emad, DESHOURS, Frédérique, Bourcier, Christophe, Carrer, Gérard, Richalot, Elodie, Picon, Odile, Diet, Antoine, Grzeskowiak, Marjorie, Biancheri-Astier, Marc, Le Bihan, Yann, Labouré, Eric, Bouklachi, Madjda, Lissorgues, Gaelle, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Electronique, Systèmes de communication et Microsystèmes (ESYCOM), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Université Paris-Est Marne-la-Vallée (UPEM)-ESIEE Paris, Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Université Paris-Est Marne-la-Vallée (UPEM)-ESIEE Paris, Conservatoire National des Arts et Métiers - CNAM (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole de l'Innovation Technologique - ESIEE PARIS (FRANCE), Sorbonne Université (FRANCE), CentraleSupélec (FRANCE), Université Paris-Est Marne-La-Vallée - UPEM (FRANCE), Université Paris-Sud 11 (FRANCE), Laboratoire d'Electronique et Electromagnétisme (L2E), Sorbonne Université (SU), Laboratoire des signaux et systèmes (L2S), Centre National de la Recherche Scientifique (CNRS)-CentraleSupélec-Université Paris-Sud - Paris 11 (UP11), Interactions et dynamique des environnements de surface (IDES), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-SUPELEC-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Computer Networks and Communications, Computer science, LF RFID, Acoustics, Electromagnétisme, 02 engineering and technology, Low frequency, [SPI.MAT]Engineering Sciences [physics]/Materials, [SPI]Engineering Sciences [physics], 0202 electrical engineering, electronic engineering, information engineering, Perpendicular, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SDV.IB.BIO]Life Sciences [q-bio]/Bioengineering/Biomaterials, Instrumentation, ComputingMilieux_MISCELLANEOUS, Orientation (computer vision), 020208 electrical & electronic engineering, Volume (computing), 020206 networking & telecommunications, Magnetic Coupling, Copper tape, [SPI.TRON]Engineering Sciences [physics]/Electronics, Inductance, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Moving Tag, Antenna (radio), Sensitivity (electronics)
Abstract: International audience; This paper focuses on bats detection, tagged at low frequency (134.2 kHz) with glasstags (typically : length 15 mm and radius1 mm). The physical link is magnetic coupling. We propose thedesign of a reader antenna based on a multi-coil structure.The goal is to obtain the highest surface of detection, at adistance of 10-15 cm, i.e. defining a so called “volume ofdetection”. The cylindrical volume of the glasstags involves ahigh sensitivity to the magnetic field orientation. As the bats areflying, the tags equivalent surfaces are considered with a randomorientation. Using complementary coils principle enables todetect fruitfully the glasstags in two perpendicular orientationsnamed HM (horizontal mode) and VM (vertical mode). Wepropose the design of a flexible reader antenna structure bymeans of an adhesive copper tape fixed on a cloth. The prototypeis designed after CST simulations and empirical formulaevaluations. Measurements show a good agreement with themodelling and tests of detection are performed with theproposed reader antenna. By comparison with a commercialantenna, the prototype reaches the highest volume of detectionin both HM and VM modes and fulfills the targeted distance ofdetection.
Published: 2019
Full Text: View/download PDF

10. An advanced control for a PM synchronous motor drive in power degraded mode

Author: Eric Berthelot, Abdelfatah Kolli, Olivier Béthoux, A. De Bernardinis, Eric Laboure, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), ICHAMS - Equipe Interaction Champs - Matériaux et Structures, Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Technologies Nouvelles (IFSTTAR/COSYS/LTN), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), and IFFSTAR
Subjects: Numerical Analysis, General Computer Science, Computer science, Applied Mathematics, Power inverter, 010103 numerical & computational mathematics, 02 engineering and technology, Degraded mode, 01 natural sciences, AC motor, Theoretical Computer Science, [SPI]Engineering Sciences [physics], Control theory, Proof of concept, Modeling and Simulation, 0202 electrical engineering, electronic engineering, information engineering, Torque, 020201 artificial intelligence & image processing, 0101 mathematics, Decoupling (electronics), ComputingMilieux_MISCELLANEOUS, Voltage, Reference frame
Abstract: This paper deals with a control principle designed to allow remedial strategies for Permanent Magnet Synchronous Motor (PMSM) drives. The scope of the paper is focused on three-phase machines and it aims to present a simple and easy to tune control scheme for the system while it operates in degraded mode, namely when only two out of the three phases are operational. Compared to existing control strategy dedicated to degraded mode, this work proposes an innovative one using new reference frames. Based on two innovative transformations applied respectively to the currents and the voltages of the system, the proposed control scheme allows, in degraded mode, the decoupling control of the states of the system and leads to continuous controller references during system steady states. These properties lead to a very straightforward control scheme based on independent PI controllers and to high static and dynamic performances. The parameters setting of the controller is quite simple whatever the degree of magnetic coupling between the two remaining motor phases. A laboratory test bench has been built to establish a proof of concept of the suggested remedial strategy. It is based on a three-phase open-end-winding permanent magnet machine fed with a power inverter made of three full H-bridge. This experimental setup enables to validate the main operations of the ac motor drive under degraded mode operation: torque control, speed change. Switching between healthy mode and faulty mode is also performed successfully using this setup.
Published: 2019
Full Text: View/download PDF

11. Collaborative design process and product knowledge methodology for mechatronic systems

Author: Jean-Yves Choley, Mehdi Mcharek, Cherif Larouci, Toufik Azib, Moncef Hammadi, Laboratoire QUARTZ (QUARTZ ), Ecole Internationale des Sciences du Traitement de l'Information (EISTI)-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-SUPMECA - Institut supérieur de mécanique de Paris-Université Paris 8 Vincennes-Saint-Denis (UP8), SUPMECA - Institut supérieur de mécanique de Paris, Université Paris 8 Vincennes-Saint-Denis (UP8)-SUPMECA - Institut supérieur de mécanique de Paris-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Ecole Internationale des Sciences du Traitement de l'Information (EISTI), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-SUPELEC-Centre National de la Recherche Scientifique (CNRS), ESTACA, SUPMECA - Institut supérieur de mécanique de Paris (SUPMECA), Université Paris 8 Vincennes-Saint-Denis (UP8)-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-SUPMECA - Institut supérieur de mécanique de Paris (SUPMECA)-Ecole Internationale des Sciences du Traitement de l'Information (EISTI), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and École Supérieure des Techniques Aéronautiques et de Construction Automobile (ESTACA)
Subjects: 0209 industrial biotechnology, General Computer Science, Concurrent engineering, Traceability, Computer science, business.industry, Process (engineering), General Engineering, 02 engineering and technology, Reuse, Mechatronics, [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], 020901 industrial engineering & automation, New product development, Common knowledge, 0202 electrical engineering, electronic engineering, information engineering, Systems engineering, 020201 artificial intelligence & image processing, Product (category theory), business, ComputingMilieux_MISCELLANEOUS
Abstract: Recent advances in design techniques promote the development of concurrent engineering to reduce the time and cost of the design cycle. This is particularly necessary for mechatronic design which involves several disciplines. But companies have to address challenges associated with collaboration and reuse. The mechatronic design evolves from the system level to the multiple-disciplinary level. This requires that system engineers and disciplinary engineers collaborate closely for an integrated and continuous product development process. However, the heterogeneity of tools used in system level and disciplinary level with the lack of a common knowledge basis creates a gap between them. Thus, the focus of this paper is to develop a knowledge management framework suitable for mechatronic concurrent design and capable to harmonize the overall design cycle. Our contribution lies in structuring knowledge at the system and disciplinary levels to ensure the traceability between them. Our methodology called Collaborative Design Process and Product Knowledge (CDPPK) is detailed with the associated meta-model. A demonstrator is also presented and applied successfully to a collaborative industrial scenario concerning the Electronic Throttle Body (ETB).
Published: 2019
Full Text: View/download PDF

12. Integrated Analysis of Young Swimmers’ Sprint Performance

Author: Ricardo J. Fernandes, Ana Filipa Silva, Ludovic Seifert, Francisco Alves, João Ribeiro, Pedro Figueiredo, João Paulo Vilas-Boas, éTICC, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Universidade do Porto, Centre d’études des transformations des activités physiques et sportives (CETAPS), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut de Recherche Interdisciplinaire Homme et Société (IRIHS), Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), and Positivo
Subjects: Male, medicine.medical_specialty, Adolescent, [SCCO.NEUR]Cognitive science/Neuroscience, Skill level, Flexibility (personality), Physical Therapy, Sports Therapy and Rehabilitation, 030229 sport sciences, Anthropometry, Athletic Performance, Biomechanical Phenomena, 03 medical and health sciences, 0302 clinical medicine, Sprint, Physiology (medical), Physical therapy, medicine, Humans, Female, Neurology (clinical), Psychology, 030217 neurology & neurosurgery, ComputingMilieux_MISCELLANEOUS, Swimming
Abstract: To analyze young swimmers' performance regarding sex and skill level, 23 boys and 26 girls (15.7 ± 0.8 and 14.5 ± 0.8 years old, respectively) were assessed for anthropometry, flexibility, strength, drag, coordination, and biomechanical variables. During a 50-m maximal front-crawl bout, seven aerial and six underwater Qualisys cameras assessed kinematics, and a load cell was used to measure drag (Tedea, United Kingdom) and tethered swimming force. A multivariate analysis of variance test (p
Published: 2019
Full Text: View/download PDF

13. Bandgap engineered smart three-terminal solar cell: New perspectives towards very high efficiencies in the silicon world

Author: Migan-Dubois, Anne, Djebbour, Zakaria, El‐Huni, Walid, Migan Dubois, Anne, Kleider, Jean-Paul, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), ANR-18-CE05-0041,THESIS,Tandem à trois terminaux à HEtérojonction sur cellule solaire SIlicium à contacts interdigitéS en face arrière(2018), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-SUPELEC-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)
Subjects: Materials science, Silicon, Band gap, chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, 7. Clean energy, 01 natural sciences, law.invention, [SPI.MAT]Engineering Sciences [physics]/Materials, Stack (abstract data type), law, Solar cell, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, Tandem, Renewable Energy, Sustainability and the Environment, business.industry, Photovoltaic system, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Heterojunction, 021001 nanoscience & nanotechnology, Condensed Matter Physics, [SPI.TRON]Engineering Sciences [physics]/Electronics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, chemistry, Terminal (electronics), [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, 0210 nano-technology, business
Abstract: International audience; Band gap engineered smart three terminal solar cell: new perspectives towards very high efficiencies in the silicon world Abstract : We present the design of a new architecture of three-terminal (3-T) photovoltaic tandem solar cells. It combines an interdigitated back contacted (IBC) bottom lateral subcell with a heterojunction vertical top cell. In this concept, the two subcells can work independently and there is no need for tunnel junctions. It is particularly well suited to silicon back contact subcells and to various types of top cell materials from III-V compounds or perovskites. The working principle is detailed here using as an example a p/i III-V front stack onto n-type silicon IBC bottom cell. We perform 2D modeling using realistic material input parameters and show how interface bandgap engineering can improve the tandem cell efficiency up to a reachable 35% value. The proposed cell concept named BESTT (bandgap engineered smart silicon three-terminal) cell can be realized with less technological steps and at a lower cost compared to the conventional four-terminal process.
Published: 2019
Full Text: View/download PDF

14. Etude des propriétés de photoconductivité de couches minces de ZnSnN2 par implantation de dopants et selon différentes conditions de croissance

Author: Le Gall, Sylvain, Ayachi, Boubakeur, Beddelem, Nicole, Bui, Ngoc Kim Thanh, Longeaud, Christophe, Goldani, Amanda, Alvarez, J, Jaffré, Alexandre, Kleider, Jean-Paul, Vilcot, Jean-Pierre, Miska, Patrice, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Institut Jean Lamour (IJL), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), SCM - Equipe Semiconducteurs en Couches Minces, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Optoélectronique - IEMN (OPTO - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), ANR-17-CE05-0022,OPERA,NOuveaux matériaux absorbeurs Pour cEllules solaiRres à base d'éléments Abondants et à faible empreinte environnementale(2017), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], ComputingMilieux_MISCELLANEOUS
Abstract: National audience
Published: 2018

15. Contactless conductivity measurement for ITO nanolayers on AsGa substrats over a wide frequency range

Author: Florent Loete, Yann Le Bihan, Denis Mencaraglia, Hajer Makhloufi, Laboratoire Génie électrique et électronique de Paris ( GeePs ), Université Paris-Sud - Paris 11 ( UP11 ) -CentraleSupélec-Sorbonne Université-Centre National de la Recherche Scientifique ( CNRS ), Équipe Photonique ( LAAS-PHOTO ), Laboratoire d'analyse et d'architecture des systèmes [Toulouse] ( LAAS ), Centre National de la Recherche Scientifique ( CNRS ) -Université Toulouse III - Paul Sabatier ( UPS ), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse ( INSA Toulouse ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Institut National Polytechnique [Toulouse] ( INP ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Toulouse III - Paul Sabatier ( UPS ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Institut National Polytechnique [Toulouse] ( INP ), Laboratoire de génie électrique de Paris ( LGEP ), Université Paris-Sud - Paris 11 ( UP11 ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -SUPELEC-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Génie électrique et électronique de Paris (GeePs), and Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [ PHYS ] Physics [physics], Materials science, business.industry, Electromagnetic spectrum, 010401 analytical chemistry, Low frequency, Conductivity, 01 natural sciences, 0104 chemical sciences, Indium tin oxide, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Semiconductor, Electromagnetic coil, [ SPI ] Engineering Sciences [physics], [ SPI.ELEC ] Engineering Sciences [physics]/Electromagnetism, Optoelectronics, Reflectometry, business, Electrical impedance, ComputingMilieux_MISCELLANEOUS
Abstract: International audience; We report on the application of a new contactless method based on eddy currents with a view to characterizing some transport properties of a large range of semiconductors. The innovative approach of this work consists in measuring the impedance of the coil by reflectometry using a broadband multicarrier test signal. The device works well with silicon wafers with a constant conductivity over a wide frequency range. Because of their electrical conductivity and high optical transmittance in the visible and near-IR regions of electromagnetic spectrum, indium tin oxide (ITO) films have motivated great interests in experimental studies and technological applications. The estimation of their electrical conductivity is a key point to develop these devices. On this paper we show that the setup can be used for the frequency characterization of ITO and AsGa nanolayers wich exhibit a frequency dependent behavior. The low frequency measurement are found in agreement with the classical four point probe setup.
Published: 2018
Full Text: View/download PDF

16. Semiconducting Y-Ba-Cu-O Uncooled Detectors: Feasibility of THz Pyroelectric Sensing

Author: Annick F. Dezardin, Xavier Galiano, Masayoshi Tonouchi, Maniakavahoaka Razanoelina, Yvan Meautte, Alain J. Krcislcr, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Institute of laser Engineering, Osaka University [Osaka], Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Permittivity, Materials science, Terahertz radiation, 02 engineering and technology, Conductivity, 01 natural sciences, 7. Clean energy, Waveguide (optics), [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, Planar, 0103 physical sciences, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, business.industry, Yttrium barium copper oxide, 021001 nanoscience & nanotechnology, Pyroelectricity, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, chemistry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, Antenna (radio), 0210 nano-technology, business
Abstract: We have previously reported how semiconducting and amorphous Y-Ba-Cu-O (a-YBCO) can perform fast and sensitive infrared pyroelectric detection. We recall first these performances for planar and trilayer a- YBCO structures. We then consider migration to THz sensing by using a planar antenna. To minimize the antenna to device impedance mismatch, a- YBCO THz conductivity was measured. The conductivity, obtained by parallel plate waveguide time-domain spectroscopy, is 50 to 150 S/m (0.2 to 1.2 THz range). Antenna structures are suggested for both planar and trilayer devices.
Published: 2018
Full Text: View/download PDF

17. Microstructure Characterization of an Aluminium Alloy Processed by Milling Followed by Spark Plasma Sintering

Author: K. Zehani, Atef Korchef, Saifeddine Charfeddine, Lotfi Bessais, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Chimie métallurgique des terres rares (CMTR), and Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS]Physics [physics], Materials science, 020502 materials, Metallurgy, chemistry.chemical_element, Spark plasma sintering, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Microstructure, Characterization (materials science), 0205 materials engineering, chemistry, Aluminium, visual_art, X-ray crystallography, Aluminium alloy, visual_art.visual_art_medium, General Materials Science, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2018
Full Text: View/download PDF

18. Knowledge sharing for mechatronic systems design and optimization

Author: Mehdi Mcharek, Moncef Hammadi, Jean-Yves Choley, Toufik Azib, Cherif Larouci, SUPMECA - Institut supérieur de mécanique de Paris, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-SUPELEC-Centre National de la Recherche Scientifique (CNRS), Laboratoire QUARTZ (QUARTZ ), Université Paris 8 Vincennes-Saint-Denis (UP8)-SUPMECA - Institut supérieur de mécanique de Paris-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Ecole Internationale des Sciences du Traitement de l'Information (EISTI), ESTACA, SUPMECA - Institut supérieur de mécanique de Paris (SUPMECA), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Université Paris 8 Vincennes-Saint-Denis (UP8)-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-SUPMECA - Institut supérieur de mécanique de Paris (SUPMECA)-Ecole Internationale des Sciences du Traitement de l'Information (EISTI), and École Supérieure des Techniques Aéronautiques et de Construction Automobile (ESTACA)
Subjects: 0209 industrial biotechnology, Concurrent engineering, Computer science, Collaborative engineering, Knowledge-based engineering, 02 engineering and technology, Reuse, Mechatronics, Knowledge sharing, [SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph], 020901 industrial engineering & automation, Control and Systems Engineering, Control system, 0202 electrical engineering, electronic engineering, information engineering, Systems engineering, Systems design, 020201 artificial intelligence & image processing, ComputingMilieux_MISCELLANEOUS
Abstract: International audience; In mechatronic design, the exchange of data between stakeholders from different disciplines is necessary to ensure efficient and simultaneous engineering. Designers from all disciplines involved need to adopt new approaches to design, which facilitate concurrent collaboration. A new method based on Knowledge Based Engineering is presented in this work. The method has two key features. First, to support the designers in the different steps of the design cycle. And second, to reuse the design results and adapt them to requirement changes. Our contribution lies in adapting KBE application roles to mechatronic design. This method allows collaborative engineering and can reduce considerably the design time and cost. The method is then illustrated through its application to the design of an Electronic Throttle Body control system
Published: 2018
Full Text: View/download PDF

19. Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries

Author: Laurent Bernard, Michel Bardet, Mélody Leclère, Jannick Duchet-Rumeau, Lionel Picard, Sébastien Livi, Armel Guillermo, Doucet, Florian, Ingénierie des Matériaux Polymères (IMP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Département de l'Electricité et de l'Hydrogène pour les Transports (DEHS), Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Magnetic Resonance (RM ), Modélisation et Exploration des Matériaux (MEM), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Structures et propriétés d'architectures moléculaire (SPRAM - UMR 5819), Institut Nanosciences et Cryogénie (INAC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre Interlangues : texte, image, langage [Dijon] (TIL), Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), COCODI - Equipe Conception, Commande et Diagnostic, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [CHIM.POLY] Chemical Sciences/Polymers, Materials science, General Chemical Engineering, chemistry.chemical_element, electrolytes, 02 engineering and technology, Electrolyte, 010402 general chemistry, Electrochemistry, 01 natural sciences, 7. Clean energy, Article, lcsh:Chemistry, ionic liquids, chemistry.chemical_compound, Ionic conductivity, General Materials Science, Thermal stability, Phosphonium, ComputingMilieux_MISCELLANEOUS, [CHIM.MATE] Chemical Sciences/Material chemistry, thermosets, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, [CHIM.POLY]Chemical Sciences/Polymers, lcsh:QD1-999, Lithium salts, chemistry, Chemical engineering, Polymerization, Ionic liquid, Lithium, 0210 nano-technology
Abstract: In this work, new gelled electrolytes were prepared based on a mixture containing phosphonium ionic liquid (IL) composed of trihexyl(tetradecyl)phosphonium cation combined with bis(trifluoromethane)sulfonimide [TFSI] counter anions and lithium salt, confined in a host network made from an epoxy prepolymer and amine hardener. We have demonstrated that the addition of electrolyte plays a key role on the kinetics of polymerization but also on the final properties of epoxy networks, especially thermal, thermo-mechanical, transport, and electrochemical properties. Thus, polymer electrolytes with excellent thermal stability (&gt, 300 &deg, C) combined with good thermo-mechanical properties have been prepared. In addition, an ionic conductivity of 0.13 Ms&middot, cm&minus, 1 at 100 &deg, C was reached. Its electrochemical stability was 3.95 V vs. Li0/Li+ and the assembled cell consisting in Li|LiFePO4 exhibited stable cycle properties even after 30 cycles. These results highlight a promising gelled electrolyte for future lithium ion batteries.
Published: 2018

20. Cerebral pseudotumor as the first manifestation of POEMS syndrome: A case report

Author: Audrey Benyamine, Pauline Belenotti, Brigitte Granel, Nicolas Macagno, Nadine Girard, Laurent Daniel, Bertrand Dussol, Clémence Delteil, Pierre-Jean Weiller, Vascular research center of Marseille (VRCM), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre recherche en CardioVasculaire et Nutrition (C2VN), Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Aix-Marseille Université - Faculté de médecine (AMU MED), Aix Marseille Université (AMU), Service de Médecine Interne (MARSEILLE - Med Int), Assistance Publique - Hôpitaux de Marseille (APHM), Chirurgie urologique et transplantation rénale [Hôpital de la Conception - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Hôpital de la Conception [CHU - APHM] (LA CONCEPTION ), Service de Médecine Interne, Hôpital de la Timone [CHU - APHM] (TIMONE), Hôpital Nord [CHU - APHM], Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-SUPELEC-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Aix Marseille Université (AMU), Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research (C2VN), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Hôpital de la Conception [CHU - APHM] (LA CONCEPTION), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: medicine.medical_specialty, business.industry, [SDV]Life Sciences [q-bio], MEDLINE, General Medicine, medicine.disease, Dermatology, Pathology and Forensic Medicine, Hemangioma, 03 medical and health sciences, 0302 clinical medicine, Neurology, Medicine, Neurology (clinical), business, 030217 neurology & neurosurgery, ComputingMilieux_MISCELLANEOUS, POEMS syndrome
Abstract: International audience
Published: 2018
Full Text: View/download PDF

21. On the defect responsible for the carrier injection-induced degradation of uncompensated n-type Czochralski silicon

Author: Mickael Albaric, A. Danel, Elénore Letty, Mustapha Lemiti, Wilfried Favre, Jordi Veirman, INL - Photovoltaïque (INL - PV), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), SCM - Equipe Semiconducteurs en Couches Minces, Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE), and Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Subjects: 010302 applied physics, Materials science, Silicon, business.industry, chemistry.chemical_element, Heterojunction, Biasing, 02 engineering and technology, Carrier lifetime, 021001 nanoscience & nanotechnology, 01 natural sciences, chemistry, 0103 physical sciences, Thermal, Optoelectronics, Degradation (geology), Wafer, Ingot, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 0210 nano-technology, business, ComputingMilieux_MISCELLANEOUS
Abstract: It is generally taken for granted that the bulk minority carrier lifetime in uncompensated phosphorus-doped silicon (Si) wafers is stable under illumination. In contradiction with this long-time belief, we report on a fast and significant lifetime degradation under light soaking for Czochralski wafers sampled from the top ingot end. We demonstrate that defect formation also proceeds during carrier injection by forward biasing Si heterojunction solar cells made from such wafers, suggesting a carrier-induced degradation rather than merely light-induced. The involved bulk defect is shown to preferentially form at the wafer center, where double Thermal Donors are in high concentration. The role of Thermal Donors is investigated further and the obtained preliminary results support their involvement in the reported carrier-induced degradation.
Published: 2017

22. Modeling of Several Concentric Layers of Superconducting Filaments

Author: Frédéric Bouillault, Thitipong Satiramatekul, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), ICHAMS - Equipe Interaction Champs - Matériaux et Structures, and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS]Physics [physics], 010302 applied physics, Superconductivity, Resistive touchscreen, Materials science, Large Hadron Collider, Condensed matter physics, Superconducting electric machine, Superconducting magnet, Superconducting magnetic energy storage, 01 natural sciences, Electronic, Optical and Magnetic Materials, law.invention, law, Condensed Matter::Superconductivity, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Decoupling (electronics)
Abstract: LGEP 2014 ID = 1513; International audience; The knowledge of superconducting filaments magnetization is an important issue of the LHC main magnets design during the construction at CERN. A new method for modeling a superconducting strand, which consists of several concentric layers of the filaments, is proposed in this paper. The numerical results obtained using the finite-element method demonstrate the coupling and decoupling behaviors between the superconducting filaments via the resistive matrix. The comparison with the earlier work on the superconductor modeling is presented and discussed.
Published: 2014
Full Text: View/download PDF

23. Hardware/Software Codesign Guidelines for System on Chip FPGA-Based Sensorless AC Drive Applications

Author: L. Idkhajine, Imen Bahri, Eric Monmasson, Mohamed El Amine Benkhelifa, Systèmes et Applications des Technologies de l'Information et de l'Energie (SATIE), École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École normale supérieure - Rennes (ENS Rennes)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Centre National de la Recherche Scientifique (CNRS), COCODI - Equipe Conception, Commande et Diagnostic, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Equipes Traitement de l'Information et Systèmes (ETIS - UMR 8051), CY Cergy Paris Université (CY)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA), Laboratoire Génie électrique et électronique de Paris (GeePs), Centre National de la Recherche Scientifique (CNRS)-CentraleSupélec-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Sud - Paris 11 (UP11), Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Rennes (ENS Rennes)-Université Paris-Sud - Paris 11 (UP11)-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Cachan (ENS Cachan)-Université Gustave Eiffel (UNIV GUSTAVE EIFFEL), Université Paris-Seine-Université Paris-Seine-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), and Université Paris-Seine-Université Paris-Seine
Subjects: Optimization problem, business.industry, Computer science, [SPI.NRJ]Engineering Sciences [physics]/Electric power, 020208 electrical & electronic engineering, 02 engineering and technology, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Computer Science Applications, [SPI]Engineering Sciences [physics], Extended Kalman filter, Software, Control and Systems Engineering, Gate array, Embedded system, Genetic algorithm, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, System on a chip, Electrical and Electronic Engineering, business, Field-programmable gate array, Synchronous motor, ComputingMilieux_MISCELLANEOUS, Information Systems
Abstract: International audience; This paper aims to provide Hardware/Software (Hw/Sw) codesign guidelines for system-on-chip field-programmable gate array-based sensorless ac drive applications. Among these guidelines, an efficient Hw/Sw partitioning procedure is presented. This Hw/Sw partitioning is performed taking into account both the control requirements (bandwidth and stability margin) and the architectural constraints (e.g., available area, memory, and hardware multipliers). A nondominated sorting genetic algorithm (NSGA-II) is used to solve the corresponding multi-objective optimization problem. The proposed Hw/Sw partitioning approach is then validated on a sensorless control algorithm for a synchronous motor based on an extended Kalman filter. Among the nondominated implementation solutions supplied by the NSGA-II, those that are considered as the most interesting are synthesized. Their time/area performances after synthesis are compared with success to their predictions. In addition, one of these optimal solutions is also tested on an experimental setup.
Published: 2013
Full Text: View/download PDF

24. Model-order reduction of magneto-harmonic problems based on POD: application to planar magnetic components

Author: Taylor, Laurent, Henneron, Thomas, Margueron, Xavier, Menach, Yvonnick Le, Moigne, Philippe Le, Razek, Adel, L2EP - Équipe Électronique de puissance (EP), Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, Université catholique de Lille (UCL)-Université catholique de Lille (UCL), L2EP - Équipe Outils et Méthodes Numériques (OMN), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), ICHAMS - Equipe Interaction Champs - Matériaux et Structures, and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2016

25. Study of traps in P3HT:PCBM based organic solar cells using fractional thermally stimulated current (FTSC) technique

Author: José Alvarez, Anne Migan-Dubois, Yunfei Zhou, Denis Mencaraglia, Michael Krueger, Arouna Darga, Peiqing Yu, Virginie Vissac, SCM - Equipe Semiconducteurs en Couches Minces, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Organic solar cell, Gaussian, Analytical chemistry, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Molecular physics, Spectral line, Trap (computing), symbols.namesake, Impurity, Materials Chemistry, HOMO/LUMO, ComputingMilieux_MISCELLANEOUS, chemistry.chemical_classification, Chemistry, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Polymer, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Characterization (materials science), Ceramics and Composites, symbols, InformationSystems_MISCELLANEOUS, 0210 nano-technology
Abstract: International audience; Thermally Stimulated Current (TSC) measurement, well known technique for trap level detection, was applied to derive the density of occupied states in organic solar cells. The device structure is Glass/ITO/P3HT:PCBM/Al. Analysis of the TSC spectra allows to determine the Fermi level position from the edge of the nearest band (LUMO or HOMO) (~ 0.42 eV). At that time, TSC peaks cannot be evaluated due to multiple traps that contribute to the current signal. In order to achieve a rough picture of the trap structure, Fractional TSC (FTSC) method was applied. The procedure is based on multiple temperature cycles which evaluate activation energies for different ranges of temperatures. The results reveal several plateaus, pointing out the presence of four trap levels (0.12 eV, 0.16 eV, 0.20 eV and 0.35 eV). Additionally, a curve-fitting procedure is done in order to characterize the trap parameters and achieved with five trap levels (0.059 eV, 0.12 eV, 0.14 eV, 0.20 eV and 0.35 eV) in Gaussian or exponential distribution. Four of them are in complete agreement with measured FTSC ones. Those results are very well correlated with our other characterizations by Admittance Spectroscopy (AS). The results presented here show that, in spite of the chemical differences between inorganic materials and conjugated polymers, FTCS technique can still be applied to determine the density of occupied states in these materials, as long as care is taken. Polymers are low-mobility materials with large concentrations of deep impurities.
Published: 2012
Full Text: View/download PDF

26. An Eddy Current System for the Study of the Cranial Rhythmic Impulse

Author: Yann Le Bihan, Andre-Emmanuel Ozout, Gaelle Herivan, Laurent Stubbe, Eric Berthelot, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Leblanc, Thierry, and Centre National de la Recherche Scientifique (CNRS)-CentraleSupélec-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Sud - Paris 11 (UP11)
Subjects: [PHYS]Physics [physics], Physics, endocrine system, Amplifier, Acoustics, Signal, [PHYS] Physics [physics], 3. Good health, Electronic, Optical and Magnetic Materials, law.invention, Cranial Rhythmic Impulse, [SPI]Engineering Sciences [physics], symbols.namesake, law, Electromagnetic coil, symbols, Eddy current, Spectral analysis, Electrical and Electronic Engineering, Doppler effect, ComputingMilieux_MISCELLANEOUS, Voltage
Abstract: The cranial rhythmic impulse (CRI) is an important osteopathic medicine concept that refers to the health of the individual. The technique of the eddy current (EC) sensors has the advantage to be directly sensitive to the CRI. In this paper, we present an EC system dedicated to the measurement of the CRI. To detect the CRI, a flexible aluminum foil covered with an adhesive layer is placed on the crane of the patient. The oscillations of the aluminum sheet induced by the CRI are detected by a dedicated EC sensor constituted of a printed coil. The sensing coil is put with an identical reference coil in an ac bridge. The bridge output voltage is analyzed with a lock-in amplifier. A spectral analysis is done on the output signal obtained after a 2 min long record on a patient. Different signals can be observed: 1) cardiac signal; 2) respiration signal; and 3) baroreflexe signal, showing the capability of the EC system in the analysis of the CRI.
Published: 2015
Full Text: View/download PDF

27. Multi-scale investigation of electronic transport and electromechanical behavior in carbon nanotube materials

Author: Frédéric Houzé, A. Mdarhri, David Alamarguy, Hao Li, Sebastian Volz, Sophie Noël, Jinbo Bai, Laboratoire de mécanique des sols, structures et matériaux (MSSMat), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion (EM2C), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université Paris Saclay (COmUE), and Carnot c3s
Subjects: 010302 applied physics, Materials science, Mechanical Engineering, Contact resistance, 02 engineering and technology, Substrate (electronics), Carbon nanotube, 021001 nanoscience & nanotechnology, 01 natural sciences, Industrial and Manufacturing Engineering, Electrical contacts, law.invention, Electrical resistance and conductance, Mechanics of Materials, Macroscopic scale, law, 0103 physical sciences, Ceramics and Composites, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Composite material, 0210 nano-technology, Electrical conductor, ComputingMilieux_MISCELLANEOUS, Order of magnitude
Abstract: Using home-built experimental setups, electrical properties and electromechanical characterization of two systems based on multiwalled carbon nanotubes (MWNTs) were investigated at room temperature. The first system is formed by carbon nanotubes (CNTs) either isolated or in small groups on a gold substrate, while the second one concerns a macroscale three-dimensional entanglement of CNTs in powder form. The local electrical resistance on systems of the first type was measured using an atomic force microscopy with a conductive tip and showed a narrow distribution of resistance values as well for isolated CNTs as for small groups of them. However, in this latter case the average resistance value has been found to be one order of magnitude higher than that of individual CNTs, which was attributed to the contact resistance between CNTs. This parameter was then studied from a statistical viewpoint through electromechanical tests performed at a macroscopic scale. They consisted in applying an external compression to CNTs powder samples and measuring the evolution of the electrical resistance across the pressed material. These tests demonstrated an outstanding decrease of the electrical resistance resulting from the increasing number of random connections between CNTs under compression, and the experimental curves were fitted with an analytical model. Furthermore, it was deduced from this model that the elementary contact resistance between CNTs decreases under compression. The stability of this electrical contact was verified over several durations and under different constant applied loads.
Published: 2011
Full Text: View/download PDF

28. Design of an SRM Speed Control Strategy for a Wide Range of Operating Speeds

Author: Mickael Hilairet, Claude Marchand, Hala Hannoun, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Engineering, Electronic speed control, Conduction mode, business.industry, 020209 energy, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 020208 electrical & electronic engineering, Control (management), Mode (statistics), Discontinuous conduction, 02 engineering and technology, Switched reluctance motor, Control and Systems Engineering, Control theory, Range (aeronautics), 0202 electrical engineering, electronic engineering, information engineering, InformationSystems_MISCELLANEOUS, Electrical and Electronic Engineering, business, ComputingMilieux_MISCELLANEOUS, Machine control
Abstract: This paper presents a speed control strategy for a switched reluctance machine (SRM). Two control strategies are compared to select the most appropriate control that allows the SRM to operate in wide-speed-range operation. The proposed strategy is first designed to control the speed in discontinuous conduction mode and is then extended to operate in continuous conduction mode as well. In this paper, the transition from three different operating modes is detailed, and the experimental results validate the proposed strategy.
Published: 2010
Full Text: View/download PDF

29. Efficient Implementation of the UPML in the Generalized Finite-Difference Time-Domain Method

Author: Ruben Rodriguez Torrado, Laurent Bernard, Lionel Pichon, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Schneegans, Olivier
Subjects: 010302 applied physics, Plane (geometry), ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Finite difference method, Finite-difference time-domain method, 020206 networking & telecommunications, 02 engineering and technology, 01 natural sciences, Finite element method, Electronic, Optical and Magnetic Materials, symbols.namesake, Maxwell's equations, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, symbols, Tetrahedron, Applied mathematics, Hexahedron, InformationSystems_MISCELLANEOUS, Electrical and Electronic Engineering, Galerkin method, ComputingMilieux_MISCELLANEOUS, Mathematics
Abstract: In this paper, we show how to use hexahedral and prismatic elements for the efficient development of uniaxial anisotropic dispersive media (UPML) around an initial unstructured tetrahedral primal mesh using the generalized finite-difference (GFD) method. The initial mesh is assumed to have plane external boundaries. Taking into account the properties of the UPML medium, we build a special discrete Hodge in order to have a simple scheme for the time-domain solution of Maxwell's equations. The method is presented for the general 3-D case and numerical results show its efficiency.
Published: 2010
Full Text: View/download PDF

30. Equivalent Stress Criteria for the Effect of Stress on Magnetic Behavior

Author: Laurent Daniel, Olivier Hubert, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 010302 applied physics, Materials science, Stress effects, Acoustics, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Magnetostriction, 02 engineering and technology, Mechanics, Elasticity (physics), 021001 nanoscience & nanotechnology, Magnetic hysteresis, 01 natural sciences, Electronic, Optical and Magnetic Materials, Stress (mechanics), Equivalent stress, ComputingMilieux_MANAGEMENTOFCOMPUTINGANDINFORMATIONSYSTEMS, Compressive strength, 0103 physical sciences, Ultimate tensile strength, InformationSystems_MISCELLANEOUS, Electrical and Electronic Engineering, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: A main limitation of most models describing the effect of stress on the magnetic behavior is that they are restricted to uniaxial, tensile or compressive, stress. An idea to overcome this strong limitation is to define a fictive uniaxial stress, the equivalent stress that would affect the magnetic behavior in a similar manner than a multiaxial one. Several authors have tried to define such a criterion. We propose in this paper to compare several equivalent stress definitions, and to apply them in the case of uniaxial and biaxial mechanical loadings for which experimental results are available.
Published: 2010
Full Text: View/download PDF

31. Discrete Magneto-Elasticity: A Geometrical Approach

Author: Alain Bossavit, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Schneegans, Olivier
Subjects: 010302 applied physics, Physics, Discretization, Differential form, Magnetism, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 020206 networking & telecommunications, 02 engineering and technology, Magnetostatics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Classical mechanics, Electromagnetism, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, InformationSystems_MISCELLANEOUS, Electrical and Electronic Engineering, Mathematical structure, Elasticity (economics), Magneto, ComputingMilieux_MISCELLANEOUS
Abstract: We show that magnetism and elasticity have very similar mathematical structures when fields are considered as differential forms of adequate nature. The same discretization principles and techniques that succeeded in electromagnetism, notably the use of edge elements, then lead to a manageable form of coupled elasto-magnetic problems.
Published: 2010
Full Text: View/download PDF

32. Finite Element Modeling of Superconducting Magnet

Author: Thitipong Satiramatekul, Frédéric Bouillault, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 010302 applied physics, Superconductivity, Materials science, Condensed matter physics, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Bean's critical state model, Superconducting magnet, Superconducting magnetic energy storage, Condensed Matter Physics, 01 natural sciences, Finite element method, Electronic, Optical and Magnetic Materials, Magnetic field, Magnetization, Condensed Matter::Superconductivity, 0103 physical sciences, InformationSystems_MISCELLANEOUS, Electrical and Electronic Engineering, 010306 general physics, Current density, ComputingMilieux_MISCELLANEOUS
Abstract: In this paper, the computation of magnetization of a strand constituted of two superconducting square bars immersed in a uniform magnetic field is studied. The numerical results are obtained from the program developed with the FEM. Bean's critical state model is carried out to characterize the electrical behavior law of superconducting materials. The magnetization cycle, the magnetic field and the current density distributions are presented. The influence of strand length on the electromagnetic coupling phenomena in the superconducting square bars is also considered. The obtained results are in good agreement with the theoretical results.
Published: 2010
Full Text: View/download PDF

33. Experimental Validation of a PEM Fuel-Cell Reduced-Order Model and a Moto-Compressor Higher Order Sliding-Mode Control

Author: Mohamed Becherif, Mickael Hilairet, Reine Talj, Romeo Ortega, Daniel Hissel, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des signaux et systèmes (L2S), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)
Subjects: Engineering, Pressure control, business.industry, 020209 energy, 020208 electrical & electronic engineering, Proton exchange membrane fuel cell, 02 engineering and technology, 7. Clean energy, Sliding mode control, Automotive engineering, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Chemical energy, Fuel gas, Control and Systems Engineering, Control theory, [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering, 0202 electrical engineering, electronic engineering, information engineering, Energy transformation, Electrical and Electronic Engineering, Synchronous motor, business, Gas compressor, ComputingMilieux_MISCELLANEOUS
Abstract: Fuel cells are electrochemical devices that convert the chemical energy of a gaseous fuel directly into electricity. They are widely regarded as potential future stationary and mobile power sources. The response of a fuel-cell system depends on the air and hydrogen feed, flow and pressure regulation, and heat and water management. In this paper, the study is concentrated on the air subsystem that feeds the fuel-cell cathode with oxygen. Proceeding from a fourth-order model representing the air subsystem of a proton exchange membrane (PEM) fuel cell, a reduced third-order model is presented. Simulations show that the relative error caused by this reduction does not exceed 5%. Experimental validation has been done on a 33-kW PEM fuel cell, for both fourth- and reduced third-order models with less than 5% relative error. Additionally, a higher order sliding-mode supertwisting algorithm, with a well-known heuristic modification using variable gains, has been designed and validated experimentally to control a permanent-magnet synchronous motor that drives a volumetric compressor (double screw) designed to feed the 33-kW fuel cell with air.
Published: 2010
Full Text: View/download PDF

34. Investigation of electric charge transport in conjugated polymer P3HT: PCBM solar cell with temperature dependent current and capacitance measurements

Author: Anne Migan, Denis Mencaraglia, Roshanak Rabdbeh, Arouna Darga, Bernard Ratier, Peiqing Yu, André Moliton, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), MINACOM, XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Fullerene, Materials science, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Analytical chemistry, 02 engineering and technology, Dielectric, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Thermal conduction, 7. Clean energy, 01 natural sciences, Capacitance, Electric charge, Space charge, Polymer solar cell, law.invention, law, 0103 physical sciences, Solar cell, InformationSystems_MISCELLANEOUS, 010306 general physics, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: We investigated quantitatively the electronic transport properties of a bulk heterojunction polymer/fullerene solar cell, based on structure Glass/ITO/P3HT:PCBM/Al. The current-voltage I-V characteristics in the intermediate positive bias and temperature regime (0.2 V ≤ V ≤ 1.5 V, 180 K ≤ T ≤ 250 K) can be well fitted by a modified Poole-Frenkel PF detrapping model. Combining these results with the high frequency capacitance measurements, we could then derive independently the absorber thickness and its dielectric constant. At low temperature (80 K ≤ T ≤ 170 K), the I-V data can be well accounted for with Space Charge Limited Current (SCLC) regimes. At intermediate positive bias (1 V ≤ V ≤ 2.3 V), the current is dominated by the trapped space charges with an exponential traps distribution, while at high positive bias (2.5 V ≤ V ≤ 4 V), the space charges due to injected free carrier play an important role for the conduction. From the fits to the two different SCLC models, we could then extract the electrically active defects parameters controlling the transport. These parameters were confirmed by space charge capacitance spectroscopy (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Published: 2010
Full Text: View/download PDF

35. Theoretical analysis and experimental results on the modulated photocarrier grating technique

Author: Javier Alejandro Schmidt, Federico Ventosinos, Nicolas Budini, Christophe Longeaud, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Física Atómica, Molecular y Química, Amorphous silicon, HYDROGENATED AMORPHOUS SILICON, Ciencias Físicas, 02 engineering and technology, Grating, 7. Clean energy, 01 natural sciences, Signal, chemistry.chemical_compound, Optics, 0103 physical sciences, Materials Chemistry, PHOTOCONDUCTIVITY, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, Óptica, 010302 applied physics, Photocurrent, business.industry, Photoconductivity, MODULATED PHOTOCARRIER GRATING, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Surfaces and Interfaces, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Computational physics, chemistry, Modulation, Density of states, DENSITY OF STATES, InformationSystems_MISCELLANEOUS, 0210 nano-technology, business, CIENCIAS NATURALES Y EXACTAS, Energy (signal processing), Física de los Materiales Condensados
Abstract: We present a complete theoretical analysis of the modulated photocarrier grating method (MPG). Our calculations show that the response of the sample will be not only a photocurrent modulated with the frequency f of the illumination, but also a response in dc and with frequency 2f. In order to put to test our calculations, we implement experimentally the MPG technique and we apply it to a hydrogenated amorphous silicon sample. We verify the existence of a response at frequency 2f, and we measure the relative intensity of this signal ? which compares well with the result of our theoretical calculation. We also show that under certain conditions the density of states (DOS) at the quasi-Fermi level for the majority carriers is related to the ratio of the MPG and modulated photoconductivity (MPC) signals. We present a simple formula that allows estimating the DOS as a function of energy by changing the temperature and the generation rate. Fil: Schmidt, Javier Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina Fil: Budini, Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina Fil: Ventosinos, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina Fil: Longeaud, C.. Universite´s Paris VI et XI; Francia
Published: 2010
Full Text: View/download PDF

36. Positionnement de bobines de transformateurs de puissance minimisant les pertes cuivre

Author: Francois Forest, Bernardo Cougo, Thierry Meynard, Eric Laboure, Convertisseurs Statiques (LAPLACE-CS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Institut d’Electronique et des Systèmes (IES), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Groupe énergie et matériaux (GEM), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3)
Subjects: Engineering, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, 020208 electrical & electronic engineering, Electrical engineering, 02 engineering and technology, General Medicine, Topology, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI]Engineering Sciences [physics], ComputingMilieux_MANAGEMENTOFCOMPUTINGANDINFORMATIONSYSTEMS, Window Width, Electromagnetic coil, 0202 electrical engineering, electronic engineering, information engineering, InformationSystems_MISCELLANEOUS, business, ComputingMilieux_MISCELLANEOUS
Abstract: This paper deals with the positioning of parallel windings in a high-frequency power transformer. Analysis of copper losses due to skin and proximity effects is performed in order to choose the best configuration of the turns inside the winding area. Initially results are a direct application of Dowell's formula. Later, FEA simulations confirm the relationship between current frequency, core window width and winding position.
Published: 2009
Full Text: View/download PDF

37. Dimensionnement de transformateurs intercellulaires pour un convertisseur flyback multicellulaire de forte puissance

Author: Francois Forest, Jean-Jacques Huselstein, Eric Laboure, Bertrand Gelis, Philippe Cussac, Thierry Meynard, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Institut d’Electronique et des Systèmes (IES), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Groupe énergie et matériaux (GEM), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Convertisseurs Statiques (LAPLACE-CS), LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3)
Subjects: Engineering, Interleaving, business.industry, Flyback converter, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Flyback transformer, Electrical engineering, General Medicine, Converters, Inductor, 7. Clean energy, [SPI.TRON]Engineering Sciences [physics]/Electronics, law.invention, ComputingMilieux_MANAGEMENTOFCOMPUTINGANDINFORMATIONSYSTEMS, law, Electronic engineering, InformationSystems_MISCELLANEOUS, business, Transformer, Engineering design process, ComputingMilieux_MISCELLANEOUS
Abstract: The simplicity of the flyback converter is attractive but this topology is not used in high power converters because of the efficiency limitation due to the coupled inductor. This drawback can be eliminated in high power multicell flyback converters by using interleaving techniques and Intercell Transformers (ICT). The first part describes the ICT flyback converter and the experimental results obtained on a 2kW-100V-70kHz demonstrator. In second part, we present the ICT design methodology, including heat transfer features. Finally, the ICT design for a 12kW converter is proposed. Experimental thermal results are given to valid the design process.
Published: 2009
Full Text: View/download PDF

38. Two step wet surface treatment influence on the electronic properties of Cu(In,Ga)Se2 solar cells

Author: Arouna Darga, Arnaud Etcheberry, Daniel Lincot, A. Migan Dubois, Denis Mencaraglia, James P. Connolly, Zakaria Djebbour, Jean-François Guillemoles, O. Roussel, B. Canava, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, Cyanide, Analytical chemistry, chemistry.chemical_element, Nanotechnology, 02 engineering and technology, Activation energy, Quantum dot solar cell, 7. Clean energy, 01 natural sciences, chemistry.chemical_compound, Etching (microfabrication), 0103 physical sciences, Materials Chemistry, Thin film, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, Bromine, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Metals and Alloys, Surfaces and Interfaces, 021001 nanoscience & nanotechnology, Copper indium gallium selenide solar cells, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Characterization (materials science), ComputingMilieux_MANAGEMENTOFCOMPUTINGANDINFORMATIONSYSTEMS, chemistry, InformationSystems_MISCELLANEOUS, 0210 nano-technology
Abstract: In this work we investigate the electronic properties of Glass/Mo/Cu(In,Ga)Se 2 (CIGS)/CdS/ZnO solar cells where the co-evaporated CIGS surfaces are subjected to a two steps chemical treatment. This two steps treatment consisting of a strong oxidative etch (bromine) of the absorber surface followed by a cyanide treatment leads to a significant (by 30%) improvement of the photovoltaic performances. The bromine etching time is used as variable in the study, while admittance spectroscopy is employed for electrically active defects characterization. Particular attention was given to the interpretation of the origin of the defects probed in the samples. One type of defects with activation energy ranging between 0.2 eV to 0.5 eV, commonly probed in the CIGS based devices and labelled N 2 , are passivated by the cyanide treatment. This allowed us to propose a new interpretation concerning the nature of this type of defect.
Published: 2009
Full Text: View/download PDF

39. Performances of a high sensitive trilayer F/Cu/F GMI sensor

Author: Francisco Alves, L. Abi Rached, J. Moutoussamy, Bhaskar Kaviraj, C. Coillot, Schneegans, Olivier, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, chemistry.chemical_element, 02 engineering and technology, 01 natural sciences, Noise (electronics), 0103 physical sciences, Electronic engineering, Electrical and Electronic Engineering, Instrumentation, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, Condensed matter physics, Metals and Alloys, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Small amplitude, Copper, Nanocrystalline material, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Electromagnetic induction, chemistry, Ferromagnetism, 0210 nano-technology, Sensitivity (electronics), Magneto impedance
Abstract: We have selected stress-annealed nanocrystalline FeSiBCuNb ribbons for trilayer ferromagnetic/copper/ferromagnetic sensors exhibiting high magneto-impedance (MI) ratio. Longitudinal MI δZ reaches 450% at 60 kHz. Measurements of responses of the GMI sensor on the small amplitude ac fields displays sensitivity of 60 V/T up to a few 100 Hz. The noise equivalent magnetic induction is equal to 13 nT/Hz +1/2 , limited to the added noise from electronics.
Published: 2008
Full Text: View/download PDF

40. Modulated photoconductivity in the high and low frequency regimes

Author: Javier Alejandro Schmidt, Jean-Paul Kleider, C. Longeaud, Roberto Roman Koropecki, Roberto Delio Arce, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Modulated Photoconductivity, Band gap, Ciencias Físicas, Defect state, 02 engineering and technology, Low frequency, Otras Ciencias Físicas, 01 natural sciences, 0103 physical sciences, Materials Chemistry, Limit (mathematics), ComputingMilieux_MISCELLANEOUS, 010302 applied physics, Physics, business.industry, Photoconductivity, Density of states, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Computational physics, Semiconductor, Modulation, Ceramics and Composites, 0210 nano-technology, business, Frequency modulation, CIENCIAS NATURALES Y EXACTAS
Abstract: Different methods have been proposed to use modulated photoconductivity (MPC) measurements in order to extract information about the density of states (DOS) within the gap of defective semiconductors. Depending on the frequency of the modulation, two regimes have to be considered: the high frequency (HF) and the low frequency (LF) regimes. In this paper, we use computer-generated data, obtained from the complete solution of the MPC equations, to test the different procedures proposed to treat the MPC data in both regimes. We show that Bru¨ggemann’s method provides an accurate reconstruction of the introduced DOS provided the capture coefficients are known, while in the LF limit of Kounavis’ method a factor of two is missing. We also test the accuracy of different procedures proposed to extract the capture coefficients of the defects, which are necessary to get absolute DOS values in the methods that utilize the HF regime. The LF–MPC method, on the other hand, has the advantage that the capture coefficients are not needed. Fil: Schmidt, Javier Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Longeaud, C.. Universite Pierre et Marie Curie; Francia Fil: Koropecki, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Arce, Roberto Delio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Kleider, J.. Universite Pierre et Marie Curie; Francia
Published: 2008
Full Text: View/download PDF

41. Multiscale modeling of the magneto-mechanical behavior of grain-oriented silicon steels

Author: Laurent Daniel, Olivier Hubert, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 010302 applied physics, Materials science, Magnetic domain, Silicon, chemistry.chemical_element, Magnetostriction, 02 engineering and technology, Mechanics, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Multiscale modeling, Potential energy, Grain size, Electronic, Optical and Magnetic Materials, [SPI]Engineering Sciences [physics], Magnetization, Nuclear magnetic resonance, chemistry, 0103 physical sciences, 0210 nano-technology, Magneto, ComputingMilieux_MISCELLANEOUS
Abstract: The prediction of the magnetic and magnetostrictive behavior of grain-oriented (GO) silicon steels is discussed. An experimental procedure for the measurement of the magneto-mechanical quantities is first detailed. Experimental measurements of the anhysteretic magnetization and magnetostriction are compared to results from the literature. A multiscale model, based on an energetic approach and infinite medium hypothesis, is used. Significant discrepancies between experiments and predictions are highlighted. The specimen shape combined to large grain size induces some strong boundary (surface) conditions leading to a change in the definition of the local potential energy. A specific demagnetizing term is introduced in the definition of the potential energy, creating an initial heterogeneous distribution of the magnetic domains and saturating the magnetostriction along the rolling direction. This modification strongly increases the ability of the model to predict the magneto-mechanical behavior of GO steels.
Published: 2008
Full Text: View/download PDF

42. A constitutive law for magnetostrictive materials and its application to Terfenol-D single and polycrystals

Author: Laurent Daniel, Nicolas Galopin, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 010302 applied physics, Materials science, Magnetic domain, Constitutive equation, Magnetostriction, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Homogenization (chemistry), Multiscale modeling, Electronic, Optical and Magnetic Materials, [SPI]Engineering Sciences [physics], Terfenol-D, Condensed Matter::Superconductivity, 0103 physical sciences, Crystallite, Statistical physics, 0210 nano-technology, Instrumentation, Single crystal, ComputingMilieux_MISCELLANEOUS
Abstract: This paper addresses a multiscale strategy for the prediction of anhysteretic magneto-elastic behavior and its application to the definition of a magneto-elastic constitutive law for Terfenol-D. The multiscale modeling is based on an energetic procedure at the single crystal scale. Localization and homogenization procedures are then applied to deduce the constitutive law of polycrystalline media from the behavior of the corresponding single crystal. The method is applied first to define the magneto-elastic behavior of single crystals, and the application to polycrystalline samples is then considered. Modeling results are compared to experimental data.
Published: 2008
Full Text: View/download PDF

43. Compensation active des vibrations des machines à réluctance variable à l'aide d'actionneurs piézoélectriques

Author: Daniel Guyomar, Claude Richard, Mohamed Gabsi, Xavier Mininger, Elie Lefeuvre, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Acoustics, General Medicine, Piezoelectric actuators, ComputingMilieux_MISCELLANEOUS
Abstract: Cet article propose une methode de compensation des vibrations a l'aide d'actionneurs piezoelectriques appliquee a des structures type stator de machines a reluctance variable, dans le but d'en diminuer le bruit acoustique. La premiere partie precise la problematique du bruit emis par ces machines, et analyse les composantes de vibration a compenser. La seconde partie introduit les actionneurs piezoelectriques et leur utilisation pour la compensation active des vibrations. Un dimensionnement de ces actionneurs est presente, et les resultats obtenus en boucle ouverte sur un prototype monophase sans partie tournante sont ensuite exposes.
Published: 2008
Full Text: View/download PDF

44. Multiscale Morphological and Electrical Characterization of Charge Transport Limitations to the Power Performance of Positive Electrode Blends for Lithium-Ion Batteries

Author: Laurent Gautier, Pierre Tran-Van, Bernard Lestriez, Thierry Douillard, Nicolas Besnard, Aurélien Etiemble, Jean-Claude Badot, Olivier Dubrunfaut, Sylvain Franger, Eric Maire, Technocentre Renault [Guyancourt], RENAULT, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Consortium Lyon Saint-Etienne de Microscopie (CLYM), École normale supérieure - Lyon (ENS Lyon)-École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM), Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL), Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), Matériaux, ingénierie et science [Villeurbanne] ( MATEIS ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -Institut National des Sciences Appliquées de Lyon ( INSA Lyon ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ), Laboratoire Génie électrique et électronique de Paris ( GeePs ), Centre National de la Recherche Scientifique ( CNRS ) -CentraleSupélec-Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris-Sud - Paris 11 ( UP11 ), Centre Interlangues - Texte, Image, Langage ( TIL ), Université de Bourgogne ( UB ), Plateforme ADN (Archives – Documentation – Numérisation) ( ADN ), Maison des Sciences de l'Homme de Dijon ( MSH Dijon (MSHD) ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Institut de Chimie Moléculaire et des Matériaux d'Orsay ( ICMMO ), Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS ), Ecole Nationale Supérieure de Chimie de Paris- Chimie ParisTech-PSL ( ENSCP ), Institut des matériaux Jean Rouxel ( IMN ), Université de Nantes ( UN ) -Centre National de la Recherche Scientifique ( CNRS ), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure de Lyon (ENS de Lyon)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM), Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie du CNRS (INC)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche de Chimie Paris (IRCP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC)
Subjects: Materials science, Scanning electron microscope, 3D geometry, 020209 energy, lithium-ion batteries, [ SPI.MAT ] Engineering Sciences [physics]/Materials, Analytical chemistry, chemistry.chemical_element, Ionic bonding, 02 engineering and technology, Electrochemistry, 7. Clean energy, Focused ion beam, Ion, [SPI.MAT]Engineering Sciences [physics]/Materials, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science, ComputingMilieux_MISCELLANEOUS, composite electrodes: ionic and electronic wirings, power performance, Renewable Energy, Sustainability and the Environment, business.industry, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Characterization (materials science), chemistry, Electrode, Optoelectronics, Lithium, 0210 nano-technology, business
Abstract: International audience; In this work, exhaustive characterizations of 3D geometries of LiNi1/3Mn1/3Co1/3O2 (NMC), LiFePO4 (LFP), and NMC/LFP blended electrodes are undertaken for rational interpretation of their measured electrical properties and electrochemical performance. X-Ray tomography and Focused Ion Beam in combination with Scanning Electron Microscopy (FIB-SEM) tomography are used for a multiscale analysis of electrodes 3D geometries. Their multiscale electrical properties are measured by using Broadband Dielectric Spectroscopy (BDS). Finally, discharge rate performance are measured and analyzed by simple, yet efficient methods. It allows discriminating between electronic and ionic wirings as the performance limiting factors, depending on the discharge rate. This approach allows a unique exhaustive analysis of the experimental relationships between the electrochemical behavior, the transport properties within the electrode and its 3D geometry.
Published: 2016
Full Text: View/download PDF

45. Multiscale approaches to high efficiency photovoltaics

Author: Huang, Yong, Gheno, Alexandre, Rolland, Alain, Pedesseau, Laurent, Vedraine, Sylvain, Durand, Olivier, Bouclé, Johann, Etgar, Lioz, Even, Jacky, Molière, T., Jaffré, A., Alvarez, J., Connolly, James, Vincent, L., Hallais, G., Mangelinck, D., Descoins, M., Bouchier, D., Renard, C., Connolly, James Patrick, Koduvelikulathu, Lejo, Mencaraglia, D., Rimada, Julio, Nejim, Ahmed, Sanchez, Guillermo, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), International Solar Energy Research Center (ISE Konstanz e.V.), Université Pierre et Marie Curie - Paris 6 (UPMC), University of Havana (Universidad de la Habana) (UH), Institut des Fonctions Optiques pour les Technologies de l'informatiON (Institut FOTON), IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Université Bretagne Loire (UBL)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), RF-ELITE : RF-Electronique Imprimée pour les Télécommunications et l'Energie (XLIM-RFEI), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université européenne de Bretagne - European University of Brittany (UEB)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS)-Télécom Bretagne, The Hebrew University of Jerusalem (HUJ), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-SUPELEC-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Centre National de la Recherche Scientifique (CNRS)-CentraleSupélec-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Sud - Paris 11 (UP11), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Nanosciences et Nanotechnologies (C2N (UMR_9001)), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), ISC Konstanz e.V., and Universidad de la Havana
Subjects: Engineering, lcsh:TJ807-830, lcsh:Renewable energy sources, FOS: Physical sciences, 02 engineering and technology, 01 natural sciences, 7. Clean energy, Photovoltaics, 0103 physical sciences, Cost action, lcsh:TJ163.26-163.5, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], Simulation, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, Condensed Matter - Materials Science, Wind power, business.industry, Photovoltaic system, General Engineering, Materials Science (cond-mat.mtrl-sci), 021001 nanoscience & nanotechnology, Solar energy, Renewable energy, lcsh:Energy conservation, Obstacle, Systems engineering, Defragmentation, 0210 nano-technology, business, Physics - Optics, Optics (physics.optics)
Abstract: While renewable energies are achieving parity around the globe, efforts to reach higher solar cell efficiencies becomes ever more difficult as they approach the limiting efficiency. The so-called third generation concepts attempt to break this limit through a combination of novel physical processes and new materials and concepts in organic and inorganic systems. Some examples of semi-empirical modelling in the field are reviewed, in particular for multispectral solar cells on silicon (french ANR project MULTISOLSI). Their achievements are outlined, and the limits of these approaches shown. This introduces the main topic of this contribution, which is the use of multiscale experimental and theoretical techniques to go beyond the semi-empirical understanding of these systems. This approach has already led to great advances at modelling which have led to modelling software which is widely known. Yet a survey of the topic reveals a fragmentation of efforts across disciplines, firstly, such as organic and inorganic fields, but also between the high efficiency concepts such as hot carrier cells and intermediate band concepts. We show how this obstacle to the resolution of practical research obstacles may be lifted by inter-disciplinary cooperation across length scales, and across experimental and theoretical fields, and finally across materials systems. We present a European COST Action MultiscaleSolar kicking off in early 2015 which brings together experimental and theoretical partners in order to develop multiscale research in organic and inorganic materials. The goal of this defragmentation and interdisciplinary collaboration is to develop understanding across length scales which will enable the full potential of third generation concepts to be evaluated in practise, for societal and industrial applications., Comment: Draft paper accompanying a plenary presentation to the World Renewable Energy Conference WREC 2015, June 2015, Bucharest. In press (IOP)
Published: 2016
Full Text: View/download PDF

46. Determination of band offsets in a-Si:H/c-Si heterojunctions from capacitance–voltage measurements: Capabilities and limits

Author: S. Ibrahim, P.-J. Ribeyron, J. Damon-Lacoste, Y. Veschetti, P. Roca i Cabarrocas, Jean-Paul Kleider, Alexander S. Gudovskikh, Laboratoire de génie électrique de Paris (LGEP), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 010302 applied physics, Chemistry, business.industry, Fermi level, Metals and Alloys, Heterojunction, 02 engineering and technology, Surfaces and Interfaces, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Capacitance voltage, Intercept method, symbols.namesake, Optics, 0103 physical sciences, Materials Chemistry, symbols, 0210 nano-technology, business, Conduction band, ComputingMilieux_MISCELLANEOUS
Abstract: The capabilities and limitations of the well-known C–V technique for the determination of the conduction band offsets in (n)a-Si:H/(p)c-Si heterojunctions are presented. In particular, the effects due to the presence of an inversion layer in c-Si and a non-negligible defect density at the a-Si:H/c-Si interface on the reliability of the C–V intercept method are discussed. The influence of the Fermi level positions in (p)c-Si and (n)a-Si:H on the inversion layer formation and the influence of the interface defect density have been analysed using numerical simulations and experimental measurements.
Published: 2007
Full Text: View/download PDF

47. Comparison of optical and electrical gap of electrodeposited CuIn(S,Se)2 determined by spectral photo response and I–V–T measurements

Author: Arnaud Etcheberry, A. Migan Dubois, B. Canava, James P. Connolly, Arouna Darga, Zakaria Djebbour, Denis Mencaraglia, Jean-François Guillemoles, Daniel Lincot, C. Bazin, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Schneegans, Olivier
Subjects: 010302 applied physics, business.industry, Band gap, Chemistry, Metals and Alloys, Heterojunction, 02 engineering and technology, Surfaces and Interfaces, Activation energy, 021001 nanoscience & nanotechnology, 01 natural sciences, Space charge, Band offset, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Tunnel effect, Optics, Depletion region, 0103 physical sciences, Materials Chemistry, Optoelectronics, 0210 nano-technology, business, ComputingMilieux_MISCELLANEOUS, Deposition (law)
Abstract: The knowledge of the absorber band gap of heterojunction solar cells is of crucial importance, because it helps to investigate the band offsets at the buffer/absorber heterointerface. Usually this gap is deduced from optical techniques such as Spectral Photo Response (SPR). However, for inhomogeneous materials, this method of estimating the band gap is dominated by the lowest value somewhere inside the absorber layer, and SPR alone cannot give any indication about the spatial location of the region concerned with this measured value. Nevertheless, to determine the nature of band offsets at the heterointerface, we need a more accurate and local value of the gap next to the interface. In this study, dark I–V–T measurements were performed to characterize the gap within the CuIn(S,Se)2 (CISS) Space Charge Region (SCR) near the CdS buffer layer. Under forward bias conditions, several recombination mechanisms occur in the CdS/CISS solar cells, each of them being characterised by a specific activation energy. One of these activation energies is related to the gap of the CISS SCR near the buffer/absorber heterointerface. We present a detailed study of the gap of electrodeposited CISS, determined from I–V–T measurements and its evolution with various CdS deposition conditions. The obtained gap values are found to be 200 to 300 meV higher than those derived from SPR. We explain this difference by the occurrence of graded CISS gap, with a gap value next to the heterointerface higher than the bulk gap value. © 2007 Elsevier B.V. All rights reserved.
Published: 2007
Full Text: View/download PDF

48. Conducting Probe Atomic Force Microscope as a Relevant Tool for Studying Some Phenomena in MEMS Switches

Author: Jerome Delamare, Frédéric Houzé, Alexis Peschot, Maxime Vincent, Christophe Poulain, Denis Mariolle, Laboratoire de Génie Electrique de Grenoble (G2ELab), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Support of the Délégation Générale de l'Armement (DGA), Laboratoire Caratérisation et Fiabilité des Microsystèmes (LCFM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d’Électronique et Électromagnétisme (L2E), and Leblanc, Thierry
Subjects: 010302 applied physics, Microelectromechanical systems, [PHYS]Physics [physics], Materials science, Cantilever, Force level, business.industry, Atomic force microscopy, Electrical engineering, Mechanical engineering, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Electrical contacts, [PHYS] Physics [physics], Reliability (semiconductor), Physical phenomena, 0103 physical sciences, Electrical and Electronic Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 0210 nano-technology, business, Instrumentation, Material transfer, ComputingMilieux_MISCELLANEOUS
Abstract: As the reliability of electrical microcontacts has proved to be the main limitation to a fast-growing production of ultraminiaturized switches, a thorough understanding of their failure mechanisms is an all-important purpose. This paper aims at showing that conducting-probe Atomic Force Microscopy (cp-AFM) is an adequate tool to actuate and study electrical contacts. By choosing relevant cantilevers and operating mode of the cp-AFM, dimensions, gap and force level representative of existing microelectromechanical switches (MEMS switches) are obtained. With two examples, the advantages of using a cp-AFM in force mode for studying physical phenomena at very low scale are highlighted. The reported investigations concern material transfer between contact parts and contact bounces. Those two undesirable phenomena induce surface damages and impinge reliability of MEMS switches. In both cases an explanatory scenario of phenomena occurring at nanoscale is proposed and preventive recommendations for improving the lifetime of such devices are suggested.
Published: 2015
Full Text: View/download PDF

49. Synthesis of dihydropyrimidine α,γ-diketobutanoic acid derivatives targeting HIV integrase

Author: Ozkan Sari, Stéphane Bourg, Pascal Bonnet, Christophe Marchand, Mathieu Métifiot, Vincent Roy, Raymond F. Schinazi, Yves Pommier, Luigi A. Agrofoglio, Emory University School of Medicine, Emory University [Atlanta, GA], Centre de Recherches sur les Fonctionnements et Dysfonctionnements Psychologiques (CRFDP), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut de Recherche Interdisciplinaire Homme et Société (IRIHS), Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Laboratory of Molecular Pharmacology, National Institutes of Health [Bethesda] (NIH)-National Cancer Institute [Bethesda] (NCI-NIH), National Institutes of Health [Bethesda] (NIH), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Organique et Analytique (ICOA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université d'Orléans (UO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Global Virus Network, University of South Florida [Tampa] (USF), Institut de Recherche Interdisciplinaire Homme et Société (IRIHS), and Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Models, Molecular, Stereochemistry, Anti-HIV Agents, Cell Survival, HIV Integrase, [CHIM.THER]Chemical Sciences/Medicinal Chemistry, Article, chemistry.chemical_compound, Structure-Activity Relationship, Cell Line, Tumor, Drug Discovery, Chlorocebus aethiops, Structure–activity relationship, Moiety, Animals, Humans, Chelation, HIV Integrase Inhibitors, Cytotoxicity, Vero Cells, ComputingMilieux_MISCELLANEOUS, Cell Proliferation, Pharmacology, biology, Dose-Response Relationship, Drug, Molecular Structure, Aryl, Organic Chemistry, Active site, General Medicine, Prodrug, 3. Good health, Integrase, Pyrimidines, chemistry, biology.protein, HIV-1, Butyric Acid
Abstract: The synthesis and antiviral evaluation of a series of dihydropyrimidinone and thiopyrimidine derivatives bearing aryl α,γ-diketobutanoic acid moiety are described using the Biginelli multicomponent reaction as key step. The most active among 20 synthesized novel compounds were 4c, 4d and 5b, which possess nanomolar HIV-1 integrase (IN) stand transfer (ST) inhibition activities. In order to understand their mode of interactions within the IN active site, we docked all the compounds into the previously reported X-ray crystal structure of IN. We observed that compounds 4c, 4d and 5b occupied an area close to the two catalytic Mg(2+) ions surrounded by their chelating triad (E221, D128 and D185), DC16, Y212 and the β-diketo acid moiety of 4c, 4d and 5b chelating Mg(2+). As those compounds lack anti-HIV activities in cell, their prodrugs were synthetized. The prodrug 4c' exhibited an anti-HIV activity of 0.19 μM in primary human lymphocytes with some cytotoxicity. All together, these results indicate that the new analogs potentially interact within the catalytic site with highly conserved residues important for IN catalytic activity.
Published: 2015
Full Text: View/download PDF

50. Characterization of the electrocatalytic activity of carbon-supported platinum-based catalysts by thermal gravimetric analysis

Author: Nina V. Smirnova, Nadezhda V. Glebova, A. A. Nechitailov, D. V. Leontyeva, Alexandra B. Kuriganova, O. A. Maslova, I. N. Leontyev, Yurii V. Popov, Louis Hennet, Natalia K. Zelenina, Alexander A. Tomasov, Southern Federal University [Rostov-on-Don] (SFEDU), South Russian state technical University, South russian university, SCM - Equipe Semiconducteurs en Couches Minces, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Thermal oxidation, Thermogravimetric analysis, Inorganic chemistry, chemistry.chemical_element, Proton exchange membrane fuel cell, General Chemistry, Activation energy, Electrochemistry, 7. Clean energy, Catalysis, Membrane, chemistry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], Carbon, ComputingMilieux_MISCELLANEOUS
Abstract: Investigations of carbon-supported Pt, Pt3Co, and Pt3Ni electrocatalysts using thermal gravimetric analysis (TGA) in combination with electrochemical measurements of the membrane electrode assemblies (MEA) for proton exchange membrane fuel cells have demonstrated that the onset temperature of the carbon support thermal oxidation and apparent activation energy of this reaction decrease in the following orders: Pt(20%)/C > Pt(35%)/C > Pt(46%)/C and Pt3Ni/C > Pt3Co/C > Pt/C, while MEA power density increases. Thus, TGA can be used as a simple and express technique for analysis of the electrocatalytic activity of carbon-supported Pt-based catalysts for proton exchange membrane fuel cells.
Published: 2015
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

896 results on '"Laboratoire de génie électrique de Paris (LGEP)"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources