Magnetic Field Analysis of an Inner-Mounted Permanent Magnet Synchronous Motor for New Energy Vehicles

Huihui Geng, Xueyi Zhang, Shilong Yan, Yufeng Zhang, Lei Wang, Yutong Han and Wei Wang
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Huihui Geng: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
Xueyi Zhang: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
Shilong Yan: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
Yufeng Zhang: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China
Lei Wang: Technology Center, Weifang No. 1 Motor Factory Co., Ltd., Weifang 262127, China
Yutong Han: Research and Development Center, Shandong Hapuwo Power Technology Co., Ltd., Zibo 255300, China
Wei Wang: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China

Energies, 2022, vol. 15, issue 11, 1-22

Abstract: The motor is an important component that affects the output performance of new energy vehicles (using new energy sources such as electric energy and hydrogen fuel energy to drive the motor and provide kinetic energy). Motors with high power and low noise can effectively improve the dynamic performance, passability and smoothness of new energy vehicles and bring a comfortable experience to driver and passengers. The magnetic field analytical model of the inner-mounted permanent magnet synchronous motor (IPMSM) is studied to improve its output quality. The motor is divided into four subdomains: the stator slot subdomain, the stator slot notch subdomain, the air-gap subdomain, and the permanent magnet (PM) subdomain. The general solution of the vector magnetic potential of each subdomain is solved, and the expression of magnetic flux density of each subdomain is derived. Meanwhile, the analytical model of the non-uniform air gap is established according to the uniform air-gap model. The model’s accuracy is verified by finite element analysis and prototype tests. The results show that the calculation results of the analytical model are effective. The model can be applied to predict the no-load back electromotive force (EMF) and cogging torque of the motor under different main air gaps. It also provides an effective and fast analysis method for the design and optimization of IPMSM for new energy vehicles.

Keywords: inner-mounted permanent magnet synchronous motor; magnetic field; analytical model; new energy vehicle (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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