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42 results on '"Mipo, J. C."'

2. Design and analysis of advanced nonoverlapping winding induction machines for EV/HEV applications

Author

Gundogdu, T., Zhu, Z.-Q., and Mipo, J.-C.

Abstract

This paper presents a detailed analysis and design guidelines for advanced nonoverlapping winding induction machines (AIMs) with coil-pitch of two slot-pitches by considering some vital empirical rules and flux-weakening characteristics. The aim of the study is to develop a type of new winding and stator topology for induction machines (IMs) that will lead to a decrease in total axial length without sacrificing torque, power, and efficiency. The key performance characteristics of the improved AIMs are investigated by 2D time-stepping finite element analysis (FEA) and compared with those of IMs having fractional and conventional overlapping and nonoverlapping windings. Compared with the conventional overlapping winding counterpart of the AIM, a ~25% shorter axial length without sacrificing torque, output power, and efficiency is achieved. In addition, the influences of major design parameters, such as stator slot, rotor slot and pole numbers, stack length, number of turns per phase, machine geometric parameters, etc., on the flux-weakening characteristics are investigated. It has been concluded that the major design parameters have a considerable effect on the electromagnetic performance. However, among those parameters, the influences of pole number and stack length together with the number of turns on flux-weakening characteristics are significant.

Published
2021

5. Solution of static field problems with random domains

Author

Mac, D. H., Clenet, S., Mipo, J. C., and Moreau, O.

Subjects
Electromagnetic fields -- Analysis, Finite element method -- Usage, Differential equations, Partial -- Usage, Stochastic processes -- Analysis, Business, Electronics, Electronics and electrical industries
Published
2010

6. Influence of magnetic materials on claw pole machines behavior

Author

Li Li, Kedous-Lebouc, A., Foggia, A., and Mipo, J.-C.

Subjects
Finite element method -- Usage, Iron -- Magnetic properties, Iron -- Electric properties, Magnetic materials -- Structure, Magnetic materials -- Electric properties, Business, Electronics, Electronics and electrical industries
Published
2010

8. Comparison of Approaches for Optimization of Electromagnetic Devices using Finite Element Method

Author

El Bechari, R. (Reda), Brisset, S. (stéphane), Clenet, S. (Stephane), Guyomarch, F. (Frédéric), Mipo, J-C. (Jean-Claude), 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), L2EP - Équipe Outils et Méthodes Numériques (OMN), HESAM Université (HESAM)-HESAM Université (HESAM)-Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, Valeo Equipements Electriques Moteur (VALEO PES Company), 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), Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, Université de Lille, Centrale Lille, Arts et Métiers Paris Tech, HEI, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 [L2EP], and Valeo Equipements Electriques Moteur [VALEO PES Company]

Subjects
[SPI]Engineering Sciences [physics]
Abstract

International audience; In the context of optimization using finite element method (FEM), many issues arise, mainly numerical noise due to re-meshing when dealing with geometric parameters furthermore the computational time of the overall optimization can be prohibitive. In this paper, we compare different approaches to deal with these issues. In some approaches, optimization method is coupled directly to FEM simulation while other approaches aim to replace the expensive simulation with cheap meta-models that reduce the overall time of optimization. As treating different approaches, a comparison protocol is proposed and two electromagnetic optimization benchmarks are treated.

Published
2019

23. Comparison of implementation techniques for Galerkin projection between different meshes

Author

Wang, Z., henneron, thomas, Dular, P., Mipo, J-C., Piriou, F., L2EP - Équipe Outils et Méthodes Numériques (OMN), 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)-Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Applied and Computational Electromagnetics [Liège] (ACE), Université de Liège-Fonds de la Recherche Scientifique [FNRS]-Institut Montefiore - Département d'Electricité, Electronique et Informatique (Liège), Valeo Electrical Systems, VALEO, BIOVERT (BIOVERT), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), 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, and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; To solve multiphysics problems, weak coupling of finite element calculations can be carried out: the subproblems of which the physical nature differs are solved separately on their own meshes. In this case, Galerkin projection provides useful tool to ensure the transfer of physical fields between different meshes. In terms of implementation, the Galerkin projection system can be either accurately assembled over the intersection of two meshes or approximately integrated over the target mesh. This paper describes and compares these two implementation techniques for the Galerkin projection.

Published
2013

38. Comparison between induction machine and interior permanent magnet machine for electric vehicle application.

Author

Guan, Y., Zhu, Z. Q., Afinowi, I. A. A., Mipo, J. C., and Farah, P.

Subjects
INDUCTION machinery, PERMANENT magnet motors, INDUCTION motor efficiency, SQUIRREL cage motors, ELECTRIC vehicles, FINITE element method, COMPARATIVE studies
Abstract

Purpose – The purpose of this paper is to make a quantitative comparison between induction machine (IM) and interior permanent magnet machine (IPM) for electric vehicle applications, in terms of electromagnetic performance and material cost. Design/methodology/approach – The analysis of IM is based on an analytical method, which has been validated by test. The analysis of IPM is based on finite element analysis. The popular Toyota Prius 2010 IPM is adopted directly, and the IM is designed with the same stator outer diameter and stack length as Prius 2010 IPM for a fair comparison. Findings – The torque capability of IM is lower than IPM for low electric loading and competitive to IPM for high electric loading. The maximum torque/power-speed characteristic of IM is competitive to IPM; while the rated torque/power-speed characteristic of IM is poorer than IPM. The power factor of IM is competitive and even better than IPM for high electric loading in low-speed region. The torque ripple of IM is comparable to IPM for high electric loading and much lower than IPM for low electric loading. The overall efficiency of IM is lower than IPM, and the maximum efficiency of copper squirrel cage IM is approximately 2-3 percent lower than IPM. The material cost of IM is about half of IPM when IM and IPM are designed with the same stator outer diameter and stack length. Originality/value – The electromagnetic performances and material costs of IM and IPM are quantitatively compared and discussed. [ABSTRACT FROM AUTHOR]

Published
2016
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39. Design of synchronous reluctance and permanent magnet synchronous reluctance machines for electric vehicle application.

Author

Guan, Y., Zhu, Z. Q., Afinowi, I. A. A., Mipo, J. C., and Farah, P.

Subjects
SYNCHRONOUS electric motor design & construction, PERMANENT magnet motors, ELECTRIC vehicles, FERRITE devices, FINITE element method, MATHEMATICAL optimization, MOTOR design & construction
Abstract

Purpose – The purpose of this paper is to minimize the optimization parameter number of synchronous reluctance machine (SynRM) and permanent magnet (PM) assisted SynRM, and compare their relative merits with interior permanent magnet (IPM) machine for electric vehicle applications, in terms of electromagnetic performance and material cost. Design/methodology/approach – The analysis of electromagnetic performance is based on finite element analysis, by using software MAXWELL. The genetic algorithm is utilized for optimization. Findings – The rotor design of SynRM can be significantly simplified by imposing some reasonable conditions. The number of rotor design parameters can be reduced to three. The electromagnetic performance of SynRM is much poorer than that of IPM, although the material cost is much cheaper, approximately one-third of IPM. The ferrite-SynRM is competitive and even better than IPM especially for high electric loading, in terms of torque capability, torque-speed characteristic, power factor, threshold speed and efficiency. In addition, ferrite-assisted SynRM has great advantage over IPM in material cost, 55 percent cheaper. The performance of NdFeB-assisted SynRM is close to IPM in terms of torque capability, torque-speed characteristic, power factor, torque ripple and efficiency. The material cost of NdFeB-assisted SynRM is ∼25 percent lower than IPM. Originality/value – Some conditions, which can simplify the optimization of SynRM rotor, are discussed. The electromagnetic performances and material costs of SynRM, ferrite-assisted, NdFeB-assisted SynRMs and IPM are quantitatively compared and discussed. [ABSTRACT FROM AUTHOR]

Published
2016
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40. Comparison of implementation techniques for Galerkin projection between different meshes.

Author

Wang, Z., Henneron, T., Dular, P., Mipo, J‐C., and Piriou, F.

Subjects
GALERKIN methods, FINITE element method, APPROXIMATION theory, ELECTROMAGNETISM, COMPARATIVE studies, MATHEMATICAL models
Abstract

To solve multiphysics problems, weak coupling of finite element calculations can be carried out: the subproblems of which the physical nature differs are solved separately on their own meshes. In this case, Galerkin projection provides useful tool to ensure the transfer of physical fields between different meshes. In terms of implementation, the Galerkin projection system can be either accurately assembled over the intersection of two meshes or approximately integrated over the target mesh. This paper describes and compares these two implementation techniques for the Galerkin projection. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2014
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41. Mortar Method Using Bi-Orthogonal Nodal Functions Applied to A\-\varphi Formulation.

Author

Aubertin, M., Henneron, T., Piriou, F., and Mipo, J.-C.

Subjects
ORTHOGONAL functions, FINITE element method, MAGNETICS, NUMERICAL grid generation (Numerical analysis), NUMERICAL analysis, MATHEMATICAL physics
Abstract

For a magnetodynamic problem decomposed into subdomains, the Mortar method can be associated with potential formulations to connect nonconforming meshes. In this paper, we propose to use the bi-orthogonal nodal shape functions with the Mortar method in the case of A\-\varphi formulation. Academic examples will be studied to shown the efficiency of the proposed model. [ABSTRACT FROM PUBLISHER]

Published
2012
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