17 results on '"Hispano Suiza"'
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2. Optimization of Profile Modifications With Regard to Dynamic Tooth Loads in Single and Double-Helical Planetary Gears With Flexible Ring-Gears
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M. Chapron, Philippe Velex, Jérôme Bruyère, Samuel Raymond Germain Becquerelle, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), 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)-Centre National de la Recherche Scientifique (CNRS), Hispano Suiza, and HISPANO SUIZA
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Engineering ,business.product_category ,Mechanical engineering ,02 engineering and technology ,profile modification ,01 natural sciences ,Herringbone gear ,Non-circular gear ,0203 mechanical engineering ,flexible ring-gear ,[PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] ,0103 physical sciences ,medicine ,Sensitivity (control systems) ,010301 acoustics ,planetary gear ,Coupling ,business.industry ,Spiral bevel gear ,Mechanical Engineering ,Stiffness ,Equations of motion ,double-helical gear ,Structural engineering ,Physics::Classical Physics ,Computer Graphics and Computer-Aided Design ,Computer Science Applications ,helical gear ,020303 mechanical engineering & transports ,Mechanics of Materials ,medicine.symptom ,business ,optimization ,Beam (structure) - Abstract
International audience; This paper is mostly aimed at analyzing optimum profile modifications (PMs) in planetarygears (PGTs) with regard to dynamic mesh forces. To this end, a dynamic model is presentedbased on 3D two-node gear elements connected to deformable ring-gears discretized into beam elements. Double-helical gears are simulated as two gear elements of opposite hands which are linked by shaft elements. Symmetric tip relief on external and internal gear meshes are introduced as time-varying normal deviations along the lines of contact and time-varying mesh stiffness functions are deduced from Wrinckler foundation models. The equations of motion are solved by coupling a Newmark time-step integration scheme and a contact algo-rithm to account for possible partial or total contact losses. Symmetric linear PMs for helical and double-helical PGTs are optimized by using a genetic algorithm with the objective of minimizing dynamic tooth loads over a speed range. Finally, the sensitivity of these optimum PMs to speed and load is analyzed.
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- 2015
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3. Analysis of no-load dependent power losses in a planetary gear train by using thermal network method
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J Durand de Gevigney, Philippe Velex, Samuel Raymond Germain Becquerelle, Fabrice Ville, Christophe Changenet, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), 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)-Centre National de la Recherche Scientifique (CNRS), LabECAM, ECAM Lyon (ECAM Lyon), Hispano Suiza, HISPANO SUIZA, LaMCoS, ECAM, and Ville, Fabrice
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0209 industrial biotechnology ,Engineering ,Specific test ,business.industry ,Thermal network ,Mechanical engineering ,02 engineering and technology ,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,[SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph] ,Physics::Classical Physics ,7. Clean energy ,Power (physics) ,Gear train ,020303 mechanical engineering & transports ,020901 industrial engineering & automation ,0203 mechanical engineering ,Planet ,Windage ,Astrophysics::Earth and Planetary Astrophysics ,Thermal model ,business ,ComputingMilieux_MISCELLANEOUS ,Simulation - Abstract
This paper presents an original method to investigate the power losses distribution into a planetary gear unit. A thermal model, which allows the estimation of power losses linked to the temperature distribution, is established. This model is used to analyse some experimental results obtained on a specific test rig. For the planetary gear set studied here, it is demonstrated that load-independent power losses are mainly due to hydrodynamic power losses generated in planets bearings and that gears windage effects are negligible.
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- 2014
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4. A torsional model of multi-stage gears – influence of external excitations and tooth shape modifications
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Samuel Raymond Germain Becquerelle, Jérôme Bruyère, Hassen Fakhfakh, Philippe Velex, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), 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)-Centre National de la Recherche Scientifique (CNRS), Hispano Suiza, and HISPANO SUIZA
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Engineering ,Discretization ,02 engineering and technology ,01 natural sciences ,Industrial and Manufacturing Engineering ,[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph] ,0203 mechanical engineering ,Involute ,[PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] ,0103 physical sciences ,medicine ,Torque ,General Materials Science ,010301 acoustics ,ComputingMilieux_MISCELLANEOUS ,Forcing (recursion theory) ,business.industry ,Mechanical Engineering ,Contact line ,Stiffness ,Mechanics ,Structural engineering ,Phaser ,Multi stage ,020303 mechanical engineering & transports ,medicine.symptom ,business - Abstract
In this paper, a torsional dynamic model of multi-stage idler spur and helical gears is presented which combines mesh internal excitations and external forcing terms such as time-varying external torque. Each contact line in the various base planes is discretized in elemental cells which are all attributed a time-varying mesh stiffness element and initial separation to account for tooth shape deviations from ideal involute flanks. The mesh stiffness functions are estimated from the formulae of Weber & Banaschek and their relative phasing is determined based on gear geometry and relative positioning. The corresponding non-linear differential system is solved by combining a Newmark’s numerical time-step integration scheme and a normal contact algorithm. A number of simulation results are presented on the combined influence on dynamic tooth loads of errors and shape deviations along with external excitations.
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- 2016
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5. Transient thermohydraulic modeling of two-phase fluid systems
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Nicolas Delalandre, Cyril Romestant, Yves Bertin, Nicolas Blet, Vincent Ayel, Vincent Platel, Institut Pprime (PPRIME), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers, Hispano Suiza, HISPANO SUIZA, LABORATOIRE DE THERMIQUE ENERGETIQUE ET PROCEDES (EA1932) (LATEP), and Université de Pau et des Pays de l'Adour (UPPA)
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History ,geography ,Engineering ,geography.geographical_feature_category ,Capillary action ,business.industry ,020209 energy ,02 engineering and technology ,Mechanics ,Inlet ,Computer Science Applications ,Education ,Physics::Fluid Dynamics ,020303 mechanical engineering & transports ,0203 mechanical engineering ,[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph] ,0202 electrical engineering, electronic engineering, information engineering ,Mass flow rate ,Sensitivity (control systems) ,Transient (oscillation) ,business ,Representation (mathematics) ,Condenser (heat transfer) ,Simulation ,Parametric statistics - Abstract
International audience; This paper presents a transient thermohydraulic modeling, initially developed for a capillary pumped loop in gravitational applications, but also possibly suitable for all kinds of two-phase fluid systems. Using finite volumes method, it is based on Navier-Stokes equations for transcribing fluid mechanical aspects. The main feature of this 1D-model is based on a network representation by analogy with electrical. This paper also proposes a parametric study of a counterflow condenser following the sensitivity to inlet mass flow rate and cold source temperature. The comparison between modeling results and experimental data highlights a good numerical evaluation of temperatures. Furthermore, the model is able to represent a pretty good dynamic evolution of hydraulic variables.
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- 2012
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6. Overall Size Optimization of a High-Speed Starter Using a Quasi-Z-Source Inverter
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Jeremy Cuenot, Régis Meuret, Farid Meibody-Tabar, Babak Nahid-Mobarakeh, Eric Monmasson, Serge Pierfederici, Sami Zaim, Groupe de Recherche en Electrotechnique et Electronique de Nancy (GREEN), Université de Lorraine (UL), SAFRAN, Grp Hispano Suiza, SAFRAN Group, 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), and Université Paris-Seine-Université Paris-Seine-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Centre National de la Recherche Scientifique (CNRS)
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010302 applied physics ,Engineering ,business.industry ,020208 electrical & electronic engineering ,Ripple ,Energy Engineering and Power Technology ,Transportation ,Topology (electrical circuits) ,02 engineering and technology ,7. Clean energy ,01 natural sciences ,Power (physics) ,[SPI]Engineering Sciences [physics] ,Direct torque control ,Control theory ,0103 physical sciences ,Automotive Engineering ,0202 electrical engineering, electronic engineering, information engineering ,Inverter ,Electrical and Electronic Engineering ,business ,Synchronous motor ,Voltage ,Z-source inverter - Abstract
International audience; In new generation of more electric aircrafts, dc-bus voltage is variable due to the variable speed generator. This implies constrains to design the actuator for the lowest dc voltage value. In case of permanent magnet synchronous machine (PMSM) starter supplied by a conventional power topology (LC input filter-voltage-source inverter), the torque constant should be low enough to ensure the controllability of the phase currents. This leads to increase rated current and so to oversize the inverter heat sink. In this paper, an optimal design procedure for a quasi-Z-source inverter with coupled inductors is presented for a PMSM starter application. This topology allows boosting the inverter input voltage at high speeds. Therefore, a motor with higher torque constant and lower rated current can be designed for this application. In addition, the input current ripple is canceled by a structural modification allowing a smaller input filter. The global optimization of the power conversion chain shows a whole volume reduction of 20% without decreasing the global efficiency compared to the conventional solution. Experimental results illustrate this conclusion and show the effectiveness of the proposed approach.
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- 2017
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7. On transmission errors and profile modifications minimising dynamic tooth loads in multi-mesh gears
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H. Fakhfakh, M. Chapron, Jérôme Bruyère, Ph. Velex, Samuel Raymond Germain Becquerelle, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), 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)-Centre National de la Recherche Scientifique (CNRS), HISPANO SUIZA, and Groupe Safran
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0209 industrial biotechnology ,Engineering ,Acoustics and Ultrasonics ,business.industry ,Multi mesh ,Mechanical Engineering ,Context (language use) ,02 engineering and technology ,Structural engineering ,Modular design ,[PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Mechanics of the solides [physics.class-ph] ,Physics::Classical Physics ,Condensed Matter Physics ,020303 mechanical engineering & transports ,020901 industrial engineering & automation ,0203 mechanical engineering ,Mechanics of Materials ,[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Mechanics of the structures [physics.class-ph] ,business ,ComputingMilieux_MISCELLANEOUS ,Dynamic mesh ,Transmission errors - Abstract
A modular three-dimensional model of multi-mesh gears is used to analyse theoretically the link between dynamic mesh excitations and transmission errors. It is demonstrated that dynamic mesh forces are mostly controlled by the local transmission errors associated with each individual mesh. A design criterion is derived which can be used to define the tooth shape modifications minimising dynamic tooth loads. The results from two examples of application on idler and planetary systems prove that the proposed theory is sound and can be applied to a variety of gear geometries. Finally, the interest and limits of using transmission errors from a single pinion-gear pair in the context of multi-mesh gears are discussed.
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- 2016
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8. Die attach using silver sintering. Practical implementation and analysis
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Wissam Sabbah, Cyril Buttay, Régis Meuret, Hervé Morel, Dominique Planson, Amandine Masson, Raphaël Riva, Stephane Azzopardi, Ampère (AMPERE), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire de l'intégration, du matériau au système (IMS), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, SAFRAN, Grp Hispano Suiza, SAFRAN Group, FRAE projet EPAHT, and Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)
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010302 applied physics ,Materials science ,power electronics packaging ,silver sintering ,[SPI.NRJ]Engineering Sciences [physics]/Electric power ,020208 electrical & electronic engineering ,Metallurgy ,dBc ,Sintering ,02 engineering and technology ,Substrate (printing) ,01 natural sciences ,Silver nanoparticle ,Die (integrated circuit) ,high temperature ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Melting point ,Electrical and Electronic Engineering ,Silver particles - Abstract
National audience; Silver sintering is a promising alternative to high melting point (HMP) solders which contain lead. Indeed, it offers better thermal and electrical properties, and can operate at higher temperature. Currently, several implementations of this technique are available, based on various silver particles sizes and sintering additives. This paper presents a review of the different implementations, and gives practical details about one of them, based on silver nanoparticles. One specific aspect is highlighted: the metal finish of the DBC substrate. It has a major impact on the quality of the sintered joint: with some finishes, the adhesion is excellent (more than 50 MPa), while it is poor with some others (lower than 10 MPa).
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- 2013
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9. Experimental investigation on no-load dependent power losses in planetary gear set
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Jérôme Durand de Gevigney, Christophe Changenet, Fabrice VILLE, Philippe Velex, Samuel Becquerelle, Ville, Fabrice, Systèmes Mécaniques et Contacts (SMC), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), 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)-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)-Centre National de la Recherche Scientifique (CNRS), LabECAM, ECAM Lyon (ECAM Lyon), Hispano Suiza, and HISPANO SUIZA
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[SPI]Engineering Sciences [physics] ,[SPI] Engineering Sciences [physics] ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
10. Integrated coreless transformer for high temperatures design and evaluation
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Wided Zine, Hilal Izzeddine, Régis Meuret, Pascal Bevilacqua, Jean-Christophe Riou, Dominique Bergogne, Bruno Allard, Christian Martin, Ampère, Département Energie Electrique (EE), Ampère (AMPERE), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-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 Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SAFRAN, Grp Hispano Suiza, SAFRAN Group, and STMicroelectronics
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010302 applied physics ,Engineering ,business.industry ,[SPI.NRJ]Engineering Sciences [physics]/Electric power ,020208 electrical & electronic engineering ,Passive component ,02 engineering and technology ,Integrated Circuit (IC) ,01 natural sciences ,7. Clean energy ,Automotive engineering ,[SPI.TRON]Engineering Sciences [physics]/Electronics ,law.invention ,[SPI]Engineering Sciences [physics] ,law ,visual_art ,0103 physical sciences ,Electronic component ,Device characterization ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,visual_art.visual_art_medium ,Energy efficient transformer ,Transformer ,business - Abstract
International audience; A novel coreless technology based on an existing process, initially designed to produce integrated passive components for commercial temperatures, is used and its capability at 200°C is tested. Design aspects and electrical characterizations of the samples are presented. Finally, an endurance test shows a satisfactory behaviour at high temperatures.
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- 2013
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11. EMI circuit modeling of a power train on composite ground plane
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N. Gazel, Régis Meuret, Christian Vollaire, Francois Costa, N. Doorgah, Ampère (AMPERE), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), 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), SAFRAN, Grp Hispano Suiza, and SAFRAN Group
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Engineering ,business.industry ,Line Impedance Stabilization Network ,[SPI.NRJ]Engineering Sciences [physics]/Electric power ,020208 electrical & electronic engineering ,Electrical engineering ,020206 networking & telecommunications ,Ranging ,02 engineering and technology ,7. Clean energy ,Electromagnetic interference ,EMI ,Power electronics ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,Common-mode signal ,High-voltage direct current ,business ,Ground plane - Abstract
International audience; The aeronautics world is in continuous evolution. Actually, the tendency is to substitute the hydro mechanical actuators with electrical ones. However, this means introducing more power electronics and in doing so, the systems become more and more vulnerable to electromagnetic noise emitted. Moreover, the introduction of composite material based structures modifies ElectroMagnetic Interference (EMI) behavior in airplanes. The aim of this study is to be able to predict, via modeling, for frequencies ranging from 10 kHz to some MHz, the propagation pathways and the amount of common mode (CM) and differential mode (DM) current. Thus, the model developed as well as the optimization methods can benefit the aeronautical industry during preliminary phases of development of different equipments.
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- 2010
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12. Comparative study of Switched Reluctance Motors performances for two current distributions and excitation modes
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Emmanuel Hoang, Guang-Jin Li, X. Ojeda, C. Balpe, Sami Hlioui, Mohamed Gabsi, Systèmes d'Energie pour les Transports et l'Environnement (SATIE SETE), Composants et Systèmes pour l'Energie Electrique (CSEE), 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)-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)-Systèmes et Applications des Technologies de l'Information et de l'Energie (SATIE), Université Paris-Seine-Université Paris-Seine-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Centre National de la Recherche Scientifique (CNRS), SAFRAN POWER, Hispano-Suiza, and Sefora
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010302 applied physics ,Coupling ,Physics ,[SPI.NRJ]Engineering Sciences [physics]/Electric power ,020208 electrical & electronic engineering ,Torque density ,02 engineering and technology ,01 natural sciences ,7. Clean energy ,Finite element method ,Switched reluctance motor ,Inductance ,[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism ,Finite Element Method (FEM) ,reluctance motor drive ,Control theory ,mutually coupled switching reluctance machines ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Torque ,Sensitivity (control systems) ,Torque ripple - Abstract
International audience; This paper presents a 3-phase, 6-slot, and 4-pole Mutually Coupled Switched Reluctance Motor (MCSRM 6/4) with new current distribution. This kind of SRMs has both the merits of conventional SRMs and Fully Pitched SRMs, i.e. shorter end-windings and higher torque density. A comparison based on Finite Element Method (FEM) between conventional and mutually coupled SRMs, in terms of self flux-linkage and inductance per phase, mutual flux-linkage and inductance be-tween phases, and output torque is realized. The conventional SRM is excited in unipolar mode, while the MCSRM is excited in bipolar overlapping mode. With a high coupling between phases for MCSRM, mutual inductances are employed to produce torque. Furthermore, the flux pathways are separated and distributed between phases, this leads to a less sensitivity to magnetic saturation. At high current density and high con-duction angle, the MCSRM has a higher output torque and a lower torque ripple. Thus, comparing to conventional SRMs, the MCSRM is more outstanding for starter-generator applications (hybrid vehicles, aerospace) which needs high output torque.
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- 2009
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13. Caractérisation des non-linéarités dans les condensateurs céramiques haute température
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Rémi Robutel, Christian Martin, Cyril Buttay, Hervé Morel, Régis Meuret, Ampère, Publications, Ampère (AMPERE), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SAFRAN, Grp Hispano Suiza, and SAFRAN Group
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[SPI.NRJ]Engineering Sciences [physics]/Electric power ,[SPI.NRJ] Engineering Sciences [physics]/Electric power
14. Characterisation of silicon carbide Schottky diodes and COOLMOS™ transistors at high temperature
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Laurent DUPONT, Lefebvre, S., Bontemps, S., Khatir, Z., Meuret, R., Laboratoire des Technologies Nouvelles (INRETS/LTN), Institut National de Recherche sur les Transports et leur Sécurité (INRETS), 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), APT Europe, and Hispano Suiza
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SILICONE ,RESISTANCE (MATER) ,ESSAI ,COMPARAISON ,SIMULATION ,COMPORTEMENT ,TEMPERATURE ,COMPOSANT ELECTRONIQUE ,TRANSISTOR ,[SPI.MAT]Engineering Sciences [physics]/Materials ,[SPI.TRON]Engineering Sciences [physics]/Electronics - Abstract
PESC 04 - IEEE 35th annual Power Electronics Specialists Conference, AIX LA CHAPELLE, ALLEMAGNE, 20-/06/2004 - 25/06/2004; The highly doping level of the base region of COOLMOS transistors allows higher temperature operations than with conventional silicon transistors having the same blocking voltage. In this paper, the temperature influence on different SiC Schottky diodes and Silicon COOLMOS transistors characteristics is discussed. Comparisons are made between SiC Schottky diodes and Si PIN diodes and beween IGBTs, low voltage MOSFET and COOLMOSTM at high temperature. Results on the leakage current indicate the ability of SiC Schottky diodes and Si COOLMOS transistors to be used at temperature about 200 °C. The paper will present results on the behaviour of SiC schottky diodes and COOLMOS transistors in the on-state and in switching operations. Switching behaviour is analysed in a buck-chopper working in single shoot condition. Results show that temperature has a great influence on the on-state performances of the tested devices, but that the switching performances of SiC Schottky diodes and COOLMOSTM transistors are not significantly modified at elevated temperatures.
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15. Evaluation of silver-sintering die attach
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Sabbah, W., Raphael RIVA, Hascoet, S., Buttay, C., Azzopardi, S., Woirgard, E., Planson, D., Allard, B., Meuret, R., SAFRAN, Grp Hispano Suiza, SAFRAN Group, Ampère (AMPERE), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire de l'intégration, du matériau au système (IMS), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, Ampère, Département Energie Electrique (EE), 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 Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-École Centrale de Lyon (ECL), Ampère, Publications, and Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)
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[SPI.NRJ]Engineering Sciences [physics]/Electric power ,[SPI.NRJ] Engineering Sciences [physics]/Electric power - Abstract
ISBN 978-3-8007-3414-6 ISSN 0341-3934; International audience; Silver sintering die attach is a promising technology for high temperature power electronics packaging. In this paper, we evaluate its performances in terms of thermal resistance and high temperature stability. The thermal resistance is measured on test vehicles assembled under different conditions, using silver pastes from NBETech and Heraeus, with different process parameters. The stability test is performed by storing samples at an elevated temperature (300°C) in air, with a strong voltage bias (1100 V) for several hours.
16. Report de puce par frittage d'argent - mise en oeuvre et analyse
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Amandine Masson, Wissam Sabbah, Raphaël Riva, Cyril Buttay, Stephane Azzopardi, Hervé Morel, Dominique Planson, Régis Meuret, Ampère (AMPERE), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SAFRAN, Grp Hispano Suiza, SAFRAN Group, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, and Ampère, Publications
- Subjects
[SPI.NRJ]Engineering Sciences [physics]/Electric power ,[SPI.NRJ] Engineering Sciences [physics]/Electric power - Abstract
International audience; Le frittage d'argent est un candidat prometteur pour remplacer les brasures haute température au plomb. Il offre en effet de meilleures performances thermiques, électriques, fonctionne à plus haute température. Plusieurs solutions existent actuellement, basée sur des particules d'argent de tailles différentes et l'ajout d'additifs de frittage. Ces solutions diffèrent par leur procédés de mise en oeuvre. Cet article présente un état de l'art des différentes techniques, puis détaille la mise en oeuvre de l'une d'entre elles, basée sur des nanoparticules. Un point particulier est mis en évidence : la finition métallique des substrats DBC. Cette finition a un effet majeur sur la qualité du joint fritté, en particulier avec une finition "Ni-Au" : dans certains cas, l'attache est excellente (tenue upérieure à 50 MPa), alors que dans d'autres, elle est inférieure à 10 MPa.
17. Normally-On SIC JFETs: Active Protections
- Author
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Dominique Bergogne, Fabien Dubois, Cyril Buttay, Régis Meuret, Hervé Morel, Ampère, Publications, Ampère (AMPERE), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SAFRAN, Grp Hispano Suiza, and SAFRAN Group
- Subjects
JFET ,SiC ,Engineering ,business.industry ,[SPI.NRJ]Engineering Sciences [physics]/Electric power ,Electrical engineering ,Normally-On ,Experimental validation ,Power (physics) ,Protection Device ,chemistry.chemical_compound ,chemistry ,Hardware_INTEGRATEDCIRCUITS ,Silicon carbide ,Electronic engineering ,Breakdown voltage ,MESFET ,Voltage source ,Safety ,Electrical and Electronic Engineering ,business ,Aerospace ,[SPI.NRJ] Engineering Sciences [physics]/Electric power - Abstract
International audience; Normally-on Silicon Carbide JFETs are powerful power switches that allow improvement of the efficiency and high temperature operation capability of Voltage Source Inverters (VSI). However, some safety considerations have to be taken against short-circuit, voltage breakdown and punch-through conditions. In this paper, it is proposed an overview of the failure mechanisms of the SiC JFET. Fast and reliable solutions to protect SiC JFETs are also presented. Experimental validation of such protections and investigation of gate destruction mode are proposed.
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