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兵工学报 ›› 2021, Vol. 42 ›› Issue (10): 2251-2259.doi: 10.3969/j.issn.1000-1093.2021.10.021

• 论文 • 上一篇    下一篇

车用双层内嵌式永磁同步电机转矩脉动抑制方法

孙承旭1,2, 李琦1,2, 范涛1,2, 温旭辉1,2, 李晔1,2, 王艳艳3, 谭平3   

  1. (1.中国科学院 电工研究所, 北京 100190; 2.齐鲁中科电工先进电磁驱动技术研究院, 山东 济南 250100;3.江麓机电集团有限公司, 湖南 湘潭 411201)
  • 发布日期:2021-11-03
  • 通讯作者: 李琦(1986—),男,副研究员,硕士生导师,博士 E-mail:hustliqi@mail.iee.ac.cn
  • 作者简介:孙承旭(1991—),男,助理工程师。E-mail: sunchengxu@live.cn
  • 基金资助:
    中国科学院A类战略性先导科技专项课题(XDA28040100);中国科学院电工研究所基金项目(E155310101)

Torque Ripple Suppress Method of Double-layer Interior Permanent Magnet Synchronous Machines for Electric Vehicle

SUN Chengxu1,2, LI Qi1,2, FAN Tao1,2, WEN Xuhui1,2, LI Ye1,2, WANG Yanyan3, TAN Ping3   

  1. (1.Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;2.Qilu Zhongke Electric Advanced Electromagnetic Drive Technology Research Institute, Jinan 250100, Shandong, China;3.Jianglu Machinery Electronics Group Co., Ltd., Xiangtan 411201, Hunan, China)
  • Online:2021-11-03

摘要: 针对永磁同步电机采用常规转子分段斜极后转矩脉动仍有较大残余问题,提出一种基于转矩波形对称性优化的转子两段斜极转矩脉动抑制方法。采用磁路解析模型,对一台电传动用双层内嵌式永磁电机转矩谐波主要特征阶次进行系统分析。电磁有限元分析结果验证了解析模型的正确性。在磁路解析模型基础上,保持电机电磁性能不变,优化双层内嵌式永磁电机转子磁极参数以抑制转矩特定次谐波,转矩波形对称性明显改善。结合转子两段斜极的措施,对造成转矩脉动的转矩谐波进一步削弱。仿真结果表明,相比于常规转子分段斜极,该方法有效降低了基准电机的转矩脉动。

关键词: 永磁同步电机, 双层内嵌, 转矩脉动抑制, 空载气隙磁密

Abstract: There is still a mount of torque ripples after conventional rotor step-skewing. For this problem, a method to suppress torque ripple based on torque waveform symmetry optimization and double-segment rotor step-skewing is proposed. A magnetic circuit analytical model is established to analyze the torque harmonics of a double-layer interior permanent magnet motor systematically. The main characteristic order of torque harmonics causing the torque ripple is revealed. The accuracy of the analytical model is verified by magnetic finite element analysis. The rotor magnetic pole is optimized by the analytical model to suppress the specific subharmonic of torque and improve the symmetry of torque waveform in the condition of keeping the electromagnetic performance of motor unchanged. The double-segment rotor step-skewing is used to further weaken the torque harmonics which cause torque ripple. The simulated results show that the proposed method is used to reduce the torque ripple of benchmark motor effectively compared with the conventional rotor step-skewing.

Key words: permanentmagnetsynchronousmachine, double-layerinterior, torqueripplesuppress, airgapfluxdensity

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