正弦波供电下永磁同步电动机径向电磁力波研究  

Research on radial magnetic forces of permanent magnet synchronous motor supplied by sine wave

作　　者：韩雪岩[1] 李生祥[1] 米秀峰 

机构地区：[1]沈阳工业大学国家稀土永磁电机工程技术研究中心,辽宁沈阳110870

出　　处：《电工电能新技术》2016年第4期1-5,22,共6页Advanced Technology of Electrical Engineering and Energy

基　　金：国家科技支撑计划资助项目(2015BAF06B00)

摘　　要：径向电磁力是影响永磁同步电动机电磁振动噪声的主要原因。抑制永磁电机电磁振动噪声的方法为:1提高电磁力波次数;2降低电磁力波幅值;3使电磁力波频率远离电机的固有频率。本文分析了永磁同步电动机的径向电磁力波次数和频率,对力波次数以及不同磁场产生的力波频率所满足的规律进行了总结;并使用有限元法计算了两台电机的气隙磁场谐波,对由气隙磁场产生的低次数径向力波幅值进行分析,找出了产生低次数大幅值径向力波的磁场谐波源规律。The radial magnetic force（ RMF） is the main source of noise and vibration in permanent magnet synchronous motors（ PMSMs）. The methods to suppress it can be summarized as：（ 1） to increase the orders of radial force,（ 2） to reduce the amplitude of the radial force and（ 3） to make the frequency of the force away from the natural frequency. This paper analyzes the orders and frequencies of the radial force of PMSMs and summarizes the correlation between the radial force orders and the corresponding vibration frequencies. Based on the finite element analysis of the air gap magnetic harmonic fields of two motors,the amplitude of low order radial force generated by the air gap field is calculated to find out the harmonics which can cause radial forces with low orders and large amplitude.

关 键 词：振动噪声 电磁力波 永磁同步电机 单边磁拉力 

分 类 号：TM351[电气工程—电机]