微特电机 ›› 2020, Vol. 48 ›› Issue (8): 7-11.

• 理论研究 • 上一篇    下一篇

混合式永磁同步电机转子磁路结构研究

崔刚1,2,3, 宋志环3, 熊斌1   

  1. 1.中国科学院电工研究所,北京 100190;
    2.中国科学院大学,北京 100149;
    3.华域汽车电动系统有限公司,上海 201323
  • 收稿日期:2020-04-26 出版日期:2020-08-28 发布日期:2020-08-24
  • 作者简介:崔刚(1984—),男,博士研究生,研究方向为特种电机及其控制。
  • 基金资助:
    国家自然科学基金资助项目(51677178)

Research on Rotor Magnetic Circuit Structure of Hybrid Permanent Magnet Synchronous Motor

CUI Gang1,2,3, SONG Zhi-huan3, XIONG Bin1   

  1. 1. Institute of Electrical Engineering Chinese Academy of Sciences, Beijing 100190,China;
    2. University of Chinese Academy of Sciences, Beijing 100149, China;
    3. Huayu Automotive Electric Drive System Company, Shanghai 201323, China
  • Received:2020-04-26 Online:2020-08-28 Published:2020-08-24

摘要: 针对电动汽车用驱动电机高成本、高温工况条件性能下降及永磁体退磁等问题,开展了双层“C”+“V”形磁障结构、采用钕铁硼永磁体与铁氧体永磁体的混合式永磁同步电机的相关研究。利用有限元方法,重点研究了包括形状、深度、宽度与磁障间隔比例等转子磁路结构关键参数,对电机最大输出转矩能力的影响。研究结果表明,混合式永磁同步电机可以在明显降低成本的前提下,满足当前电动汽车驱动电机的使用要求。

关键词: 电动汽车, 混合式永磁电机, 转子磁路结构, 高功率密度, 退磁

Abstract: Aiming at the problems of high cost, high temperature performance attenuation and permanent magnet(PM) demagnetization of drive motors for electric vehicles at present, a hybrid permanent magnet synchronous motor with double-layer C+V Nd-Fe-B PM and ferrite PM was studied, which can meet the current requirements of electric vehicle drive motor under the premise of significantly reducing the cost of motor. By using finite element method, the effects of rotor magnetic circuit structure, including the shape, depth, width and interval ratio of magnetic barrier, on the maximum output torque of motor were studied.

Key words: electric vehicle, hybrid permanent magnet synchronous motor (PMSM), rotor magnetic circuit structure, high power density, demagnetization

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