电动汽车驱动电机电磁噪声的仿真分析  

Simulation Analysis on Electromagnetic Noise of Electric Vehicle Drive Motor

作　　者：岳东鹏[1] 夏洪兵 高辉 闫永健[1] YUE Dongpeng;XIA Hongbing;GAO Hui;YAN Yongjian(School of Automobile and Transportation, Tianjin University of Technology and Education, Tianjin 300222, China;China Automotive Technology ＆ Research Center, Tianjin 300300, China)

机构地区：[1]天津职业技术师范大学汽车与交通学院,天津300222 [2]中汽研(天津)汽车工程研究院有限公司,天津300300

出　　处：《噪声与振动控制》2018年第A01期175-180,共6页Noise and Vibration Control

摘　　要：为研究某型电动汽车驱动电机的电磁噪声,以一台8极48槽电动汽车用永磁同步电机为研究对象,通过电磁场有限元分析软件得到电机在正弦波供电下的气隙径向电磁力的阶次特征以及频率特征。对电机定子机壳的模态进行仿真,得到电机前五阶的模态振型及固有频率。在此基础上,运用声学仿真软件建立电机的声学有限元网格,将电机的电磁力与电机模态网格进行耦合求解电机的电磁振动与噪声,得到电机电磁噪声在不同频率下的声场声压分布。并对电机在某一工况下的稳态噪声进行台架试验,得到电机噪声的频谱图。分析过程对预测不同类型的电动汽车驱动电机的电磁噪声具有借鉴意义。In order to study the electromagnetic noise of the driving motor of an electric vehicle, a permanent magnet synchronous motor（PMSM） for an 8-pole 48-slot electric vehicle is taken as the object of study. The electromagnetic field finite element analysis software is used to obtain the order characteristics and frequency characteristics of the radial electromagnetic force in the air gap of the motor under sinusoidal power supply. The modes of the stator shell of the motor are simulated, and the first five modes and natural frequencies of the motor are obtained. The acoustic finite element mesh of the motor is established by using the acoustic simulation software. The electromagnetic force and the modal grid of the motor are coupled to solve the electromagnetic vibration and noise of the motor. The acoustic pressure distribution of motor electromagnetic noise at different frequencies is obtained. Then the steady state noise of motor under a certain working condition is tested on the bench, and the spectrum of motor noise is obtained. The analysis process can be used for reference in predicting the electromagnetic noise of different types of electric vehicle driven motors.

关 键 词：声学 电机电磁噪声 有限元分析 永磁同步电机 径向电磁力 

分 类 号：TM301.4[电气工程—电机]