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159 results on '"Bethoux, Olivier"'

3. PWM-Induced Current Modelling in Stator Slots with Multiple Stacked Coils

Author

Cizeron, Antoine, Milan, Hugo, Ojeda, Javier, Béthoux, Olivier, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Pierfederici, Serge, editor, and Martin, Jean-Philippe, editor

Published
2023
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4. Optimal Sizing for Fuel Cell Hybrid Power Sources Under Reliability and Energy Performance Indexes

Author

Azib, Toufik, Bethoux, Olivier, Ceschia, Adriano, Alves, Francisco, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Pierfederici, Serge, editor, and Martin, Jean-Philippe, editor

Published
2023
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16. Planar Transformers Electromagnetic Modeling Considering Capacitive Couplings up to 100 MHz

Author

Pniak, Lucas, Revol, Bertrand, Queval, Loic, Gautier, Cyrille, Magambo, Jean-Sylvio Ngoua Teu, Hung, Stephane Ngo Bui, and Bethoux, Olivier

Abstract

Planar transformer technology provides a serious alternative to wound transformers for improving the efficiency and power density of isolated converters. The flat shape of its coil turns and the interleaving of its windings allow an excellent control of the skin and proximity effects. The major drawback of planar technology is the strong capacitive couplings between the windings. These couplings are detrimental to the increased switching frequency induced by the new wide-bandgap transistors, and to electromagnetic compatibility. Using fundamental equations, material properties, and geometric dimensions, the present work proposes a semianalytical electromagnetic model of planar transformers able to account for capacitive couplings. Compared with current models, it allows rapid estimation of all its sizing parameters: losses, leakage inductance, bandwidth, and interwinding impedance. This novel model was experimentally validated over a wide frequency range (1 kHz up to 100 MHz) using transformers with both series and parallel connected windings.

Published
2024
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22. Contributors

Author

Azzaro-Pantel, Catherine, primary, Baetcke, Lars, additional, Becherif, Mohamed, additional, Bethoux, Olivier, additional, Bourasseau, Cyril, additional, Cabaret, Katy, additional, Cany, Camille, additional, Csukas, Bela, additional, De-León Almaraz, Sofía, additional, Deng, Chun, additional, Ehrenstein, Michael, additional, Feng, Xiao, additional, Grouset, Didier, additional, Guillén-Gosálbez, Gonzalo, additional, Guinot, Benjamin, additional, Hansen, Zaza Nadja Lee, additional, Jingdai, Wang, additional, Kaltschmitt, Martin, additional, Kudoh, Yuki, additional, Le Duigou, Alain, additional, Linssen, Jochen, additional, Lucchese, Paul, additional, Mansilla, Christine, additional, Markert, Frank, additional, Nzihou, Ange, additional, Ochoa Robles, Jesus, additional, Ozawa, Akito, additional, Pham Minh, Doan, additional, Phan, Thanh Son, additional, Picard, Fabienne, additional, Ramadan, Haithman, additional, Ridart, Cyrille, additional, Rödl, Anne, additional, Siang, Tan Ji, additional, Simoncini, Nicoals, additional, Varga, Monika, additional, Vo, Dai-Viet N., additional, Wulf, Christina, additional, Yongrong, Yang, additional, Zapp, Petra, additional, and Zuwei, Liao, additional

Published
2018
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26. AC Resistance and Leakage Inductance Estimation for Planar Transformers With Parallel-Connected Windings.

Author

Pniak, Lucas, Queval, Loic, Revol, Bertrand, Teu, Jean-Sylvio Ngoua, Gautier, Cyrille, and Bethoux, Olivier

Abstract

Regarding the ever-increasing switching frequency of power converters, there is a lack of tools to perform a quick and effective optimization of the high-frequency transformers embedded in isolated power converters. Indeed, at high operating frequency, the geometry of the core and windings deeply impacts the overall transformer performance. Specifically, assessing accurately the current distribution in parallel-connected windings is a challenging and key issue. Winding parallelization, frequently implemented in low-voltage and high-current applications so as to decrease Joule losses, may be an ineffective solution because of skin and proximity effects. They create an unbalanced current distribution in the parallel-connected windings, which greatly impacts the ac resistance and leakage inductance of the transformer. This article proposes an innovative frequency analytical model permitting to simply and accurately compute the current distribution in the transformer windings, the ac resistance, and the leakage inductance. The proposed approach is comprehensively presented, validated using both measurements and two-dimensional finite element analysis and analyzed giving guidelines to engineers designing high-frequency transformers. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Microtomographic exploration of two arthropods from the Montceau-les-Mines Lagerstätte (Carboniferous)

Author

Seguin, Maxime, Lhéritier, Mickaël, Bethoux, Olivier, Perrier, Vincent, Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

32. Electric Traction Chain with Segmented Power Supply

Author

Ben Ahmed, Hamid, primary, Bethoux, Olivier, additional, Cizeron, Antoine, additional, Hoang, Emmanuel, additional, Juton, Anthony, additional, Laboure, Eric, additional, Mercier, Adrien, additional, Monmasson, Eric, additional, Ojeda, Javier, additional, Queval, Loic, additional, and Remy, Ghislain, additional

Published
2021
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33. Impact de la crise Permien-Trias sur la diversité des odonates

Author

Deregnaucourt, Isabelle, Bardin, Jérémie, Bethoux, Olivier, Villier, Loïc, Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

37. Is Strudiella a Devonian insect?

Author

Hörnschemeyer, Thomas, Haug, Joachim T., Bethoux, Olivier, Beutel, Rolf G., Charbonnier, Sylvain, Hegna, Thomas A., Koch, Markus, Rust, Jes, Wedmann, Sonja, Bradler, Sven, and Willmann, Rainer

Published
2013
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40. Old fossils, new tricks: the application of Reflectance Transformation Imaging (RTI) to the study of fossil insects from the Late Cretaceous (Cenomanian) of Labrador

Author

Demers‐Potvin, Alexandre, Bethoux, Olivier, Cournoyer, Mario, Larsson, Hans C.E., Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

41. Reflectance Transforming Imaging applied to insect imprint fossils

Author

Bethoux, Olivier, Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

42. The Molteno Formation (South Africa), a testimony of the diversity of Triassic Odonata

Author

Deregnaucourt, Isabelle, Bardin, Jérémie, Wappler, Torsten, Anderson, John M., Bethoux, Olivier, Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

43. A new basal mantis (Mantodea) and the first North American ‘hairy’ cicada (Hemiptera: Tettigarctidae) found among a recently expanded entomofauna from the Late Cretaceous (Cenomanian) of Labrador, Canada

Author

Demers‐Potvin, Alexandre, Bethoux, Olivier, Cournoyer, Mario, Larsson, Hans C.E., Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

44. Phylogenomic analysis of Orthoptera sheds new light on the evolution of acoustic communication

Author

Song, Hojun, Bethoux, Olivier, Shin, Seunggwan, Simon, Sabrina, Liu, Shanlin, Meng, Guanliang, Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

49. The age and ancient biogeography of stoneflies

Author

Cui, Yingying, d'Haese, Cyrille, Bethoux, Olivier, Laurin, Michel, Centre de recherche sur la Paléobiodiversité et les Paléoenvironnements (CR2P), Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Capital Normal University [Beijing], Mécanismes Adaptatifs et Evolution (MECADEV), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Paléontologie - Paris (CR2P), and Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], [SDE.BE]Environmental Sciences/Biodiversity and Ecology, [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy
Abstract

International audience

Published
2017

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