电机与控制应用2024，Vol.51Issue(6)：88-97,10.DOI:10.12177/emca.2024.047
基于轴线方向不等宽度磁极结构的表贴式永磁同步电机极频振动的削弱
Reduction of Pole Frequency Vibration in Surface-Mounted Permanent Magnet Synchronous Motors Based on Axially Unequal Width Pole Structure
摘要
Abstract
In order to solve the pole frequency vibration problem of a 10-pole and 12-slot surface-mount permanent magnet synchronous motor,a weakening scheme of the pole structure with axially unequal width is proposed.This scheme can effectively reduce the extreme frequency vibration of the motor under the premise of ensuring the torque density of the motor.Firstly,based on the Maxwell stress tensor method,an analytical expression for the radial electromagnetic force of the motor is derived,and a model of the electromagnetic force acting on the stator teeth of the motor is established.Simultaneously,factors contributing to the generation of pole frequency electromagnetic force harmonics in the prototype are analyzed.Then,through finite element simulation analysis,the basic mechanism of reducing pole frequency electromagnetic force by using the magnetic pole structure with axially unequal width is explained.And comparison analysis of the motor's electromagnetic performance and vibration acceleration before and after optimization is conducted.Finally,the results show that the polar structure with axially unequal width can effectively reduce the harmonics and vibrations of the polar electromagnetic force while maintaining the torque density of the motor,which confirms the effectiveness of the optimization scheme.关键词
表贴式永磁同步电机/削弱极频振动/轴线方向不等宽度磁极/有限元模型Key words
surface-mounted permanent magnet synchronous motor/weaken pole-frequency vibration/axially unequal width pole structure/finite element model分类
信息技术与安全科学引用本文复制引用
武彤,夏加宽,朱启升..基于轴线方向不等宽度磁极结构的表贴式永磁同步电机极频振动的削弱[J].电机与控制应用,2024,51(6):88-97,10.基金项目
国家自然科学基金(52077142)National Natural Science Fundation of China(52077142) （52077142）
