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Distributed Parameter Extraction Study of Permanent Magnet Synchronous Motor in EV
Received:January 31, 2019  Revised:March 06, 2019
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Keywords:permanent magnet synchronous motor  EMI model  EV
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AuthorInstitutionEmail
HE Fengchun College of Electrical Engineering, Zhejiang University frankie0123@163.com
JIA Xiaoyu College of Electrical Engineering, Zhejiang University xiaoyujia@zju.edu.cn
CHEN Min College of Electrical Engineering, Zhejiang University Heaven@cee.zju.edu.cn
XU Dehong College of Electrical Engineering, Zhejiang University xdh@cee.zju.edu.cn
HE Maojun Bosch China Investment Ltd. CR/RTC2-AP MaoJun.He@cn.bosch.com
LIU Xudan Bosch China Investment Ltd. CR/RTC2-AP Xudan.LIU@cn.bosch.com
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Abstract:
      Power-train in electric vehicle (EV) usually composes of a battery pack, inverter and permanent magnet synchronous motor (PMSM). The power-train system may cause broadband electromagnetic emission due to high switching frequency behavior of power semiconductor device. Permanent magnet synchronous motor provides propagation paths for electromagnetic interference (EMI) noise and enhances EMI, it's an im-portant part of EMI model for power-train system. Firstly, a lumped parameter model of PMSM is introduced. by analyzing the PMSM structure, circuit components of the lumped model are associated with its parasitic parameters. Secondly, winding inductance, parasitic capacitance and mutual inductance are obtained by theoretical calculation and finite element analysis (FEA). Experiments are conducted to verify the results. Then, copper loss equivalent resistance and core loss equivalent resistance are calculated. Finally, common mode (CM) and differential mode (DM) impedance of a PMSM are measured by network analyzer, and comparisons between experiment results and predicted results are made.
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