电气工程学报 ›› 2019, Vol. 14 ›› Issue (3): 74-80.doi: 10.11985/2019.03.011

• • 上一篇    下一篇

电动汽车异步电动机电磁噪声分析与仿真 *

韩锐,唐友义,徐熊明,焦凯凯,辛治铖,闫志伟,鲍晓华   

  1. 合肥工业大学电气与自动化工程学院 合肥 230009
  • 收稿日期:2019-04-11 出版日期:2019-09-25 发布日期:2019-11-21
  • 作者简介:韩锐,男,1998年生,本科生。主要研究方向为电机设计理论和技术。E-mail:ruih.zero@gmail.com|鲍晓华,男,1972年生,博士研究生导师,教授。主要研究方向为电机设计理论和技术、电机电磁场理论分析及计算、大型电机及高速电机的可靠性技术。E-mail:baoxh@hfut.edu.cn
  • 基金资助:
    * 合肥工业大学2018年省级大学生创新创业训练计划资助项目(2018S053)

Analysis and Simulation of Electromagnetic Noise of Induction Motors for Electric Vehicles

HAN Rui,TANG Youyi,XU Xiongming,JIAO Kaikai,XIN Zhicheng,YAN Zhiwei,BAO Xiaohua   

  1. School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009 China
  • Received:2019-04-11 Online:2019-09-25 Published:2019-11-21

摘要:

异步电动机大量应用于日常的生活生产中,出于环境的要求,降低异步电动机的电磁噪声十分重要。为了研究在电动汽车中异步电动机的噪声大小,采用有限元法分析异步电动机的气隙磁场,并对其进行快速傅里叶变换,得出磁场中基波与谐波分量。对比不同斜槽角度频谱分析结果,得出谐波含量最少的斜槽角度。在最佳斜槽角度的基础上,根据麦克斯韦定律计算出作用在电动机表面的电磁激振力并加载到定子表面,计算异步电动机的应力与变形。最终导入Workbench声场计算模块,计算不同激励频率下电动机的噪声情况。根据计算结果,分析变频调速中异步电动机的噪声情况。

关键词: 异步电动机, 电磁噪声, 有限元分析, 耦合仿真

Abstract:

Induction motors are widely used in the field of industry and life. It is of great importance to reduce the electromagnetic noise of induction motors due to the environmental requirements. In order to research the vibration and acoustic noise of the induction motor used in electric vehicle, the finite element method is used to compute the air-gap magnetic field of the induction motor and the spectrum of air-gap magnetic field are analyzed by fast Fourier transform (FFT), then the fundamental and harmonic magnetic potentials is obtained. By comparing the spectrum analysis results of different skew angles, the skew angle with the least harmonic content is obtained. Based on the angle of the skewed slots the electromagnetic excitation force acting on the surface of the motor is calculated according to Maxwell's law, and calculates the stress and deformation of the induction motor. Finally, the results are imported to the Workbench sound field calculation module to calculate the noise of the motor with different excitation frequencies. Based on the calculation results, the noise of an induction motor with variable frequency speed regulation can be analyzed.

Key words: Induction motor, electromagnetic noise, finite element analysis, coupled simulation

中图分类号: