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Simulation analysis of cogging torque of permanent magnet synchronous motor for electric vehicle

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Abstract

This paper proposes a new approach to study generation mechanism and influence factors of cogging torque of permanent magnet synchronous motors, in order to improve the operational performance and riding comfort of electric vehicle. Based on energy method and Fourier expansion, the method of predicting cogging torque is proposed. Two-dimensional finite element model of in-wheel motor is established by Maxwell software, and electromagnetic character of that is analyzed. Skew slot, pole arc coefficient and width of slot mouth are analyzed and studied by finite element method, in order to realize the change regularity of cogging torque. Cogging torque curves under the different skew slots, the different pole arc coefficients and the different widths of slot mouth are obtained, which can effectively reduce the cogging torque of in-wheel motor, but they still exists some limitations. The final simulation analysis results are in good agreement with the theoretical predicting results, which indicates that this method can be used to afford a theoretical basis to reduce the cogging torque and optimize the in-wheel motor of electric vehicle in the future.

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Authors and Affiliations

  1. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, China

    Qiping Chen, Hongyu Shu & Limin Chen

Authors
  1. Qiping Chen
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  2. Hongyu Shu
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  3. Limin Chen
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Corresponding author

Correspondence to Hongyu Shu.

Additional information

Recommended by Associate Editor Kyongsu Yi

Qiping Chen received his M.S. degree in Vehicle Engineering from Xihua University, Chengdu, China, 2010. He currently is Ph.D student, and study in State Key Laboratory of Mechanical Transmission, Chongqing University, China. His research interests include electric vehicles, mechatronics, intelligent vehicles and hybrid vehicles.

Hongyu Shu received his B.S., M.S. and Ph.D degrees in Mechanical Engineering from Chongqing University, Chongqing, China, in 1984, 1987 and 1999. He is currently a professor of State Key Laboratory of Mechanical Transmission, Chongqing University, China. His research and teaching interests include electric vehicles, mechatronics, hydraulic shock absorber and vehicle engineering. He is currently a senior member of the Chinese Society of Mechanical Engineering.

Limin Chen currently received his M.S. in Vehicle Engineering from Nanchang University, Nanchang, China, 2010. He is Ph.D student, and study in State Key Laboratory of Mechanical Transmission, Chongqing University, China. His research interests include electric vehicles, mechatronics and hybrid vehicles.

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Chen, Q., Shu, H. & Chen, L. Simulation analysis of cogging torque of permanent magnet synchronous motor for electric vehicle. J Mech Sci Technol 26, 4065–4071 (2012). https://doi.org/10.1007/s12206-012-0903-8

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  • DOI: https://doi.org/10.1007/s12206-012-0903-8

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