Affiliations: [a] Nanjing University of Science and Technology, Nanjing, Jiangsu, China | [b] Nanjing Institute of Technology, Nanjing, Jiangsu, China | [c] Southeast University, Nanjing, Jiangsu, China
Correspondence:
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Corresponding author: Jianhu Yan, Nanjing University of Science and Technology, School of Automation, Xiaolingwei 200, Xuanwu District, Nanjing, Jiangsu, China. Tel./Fax: +8613851749252; E-mail: [email protected].
Abstract: Light electric vehicles (LEVs) have attracted growing attention by the governments worldwide due to their advantages of zero emission, low noise and energy saving. Interior permanent magnet synchronous motor (IPMSM) is a popular choice for LEVs drive systems because of its high power density, excellent flux-weakening capability and high efficiency. The different rotor structures of IPMSMs can affect the performance of the LEV drive system. And their electromagnetic parameters play the decisive role on the control performance of the motor. In this paper, the conventional inset-type IPMSM and the V-shape IPMSM are designed and compared based on finite element method (FEM). Moreover, the field-weakening performances in these two topologies are studied. Besides, the prototypes with these two rotor structures are manufactured and tested to experimentally verify the correctness of the FEM analysis.
Keywords: Finite element method, field-weakening control, interior permanent magnet machine, light electric vehicle, rotor structure
