基于定子结构优化的永磁电机齿槽转矩抑制方法  

Cogging Torque Reduction Method of Permanent Magnet Motor Based on Optimization of Stator Structure

作　　者：张衍军 叶乾杰 赵新超 姜泽 朱吉安 ZHANG Yanjun;YE Qianjie;ZHAO Xinchao;JIANG Ze;ZHU Jian(Wolong Electric(Jinan)Motor Co.,LTD.,Jinan 250000,China;Wolong Electric Group Co.,LTD.,Shaoxing Zhejiang 312000,China)

机构地区：[1]卧龙电气(济南)电机有限公司,济南250000 [2]卧龙电气驱动集团股份有限公司,浙江绍兴312000

出　　处：《微电机》2024年第4期6-9,17,共5页Micromotors

摘　　要：为了削弱永磁电机的齿槽转矩,研究了在永磁电机定子齿部开设辅助槽进行结构优化的方法。理论上分析了永磁电机齿槽转矩的产生机理及其抑制方法,通过有限元分析软件JMAG建立了9槽6极表贴式永磁同步电机的仿真模型,在定子齿部开设辅助槽,分析了辅助槽数量、槽位置角、槽深度、槽宽度等单参数变化及双参数同时变化对齿槽转矩的影响规律,并制作样机进行测试,对比开槽前后的电机性能。结果表明:选定合理的辅助槽位置和尺寸,可以显著降低永磁同步电机的齿槽转矩。In order to reduce the cogging torque of permanent magnet motor,the method of stator teeth opening auxiliary slot to optimize structure was studied.The mechanism and suppressing method of cogging torque was analyzed theoretically.By using finite element analysis software JMAG,the simulation model of surface mounted permanent magnet synchronous motor with 9-slot 6-pole was established,and auxiliary slots was set up on the stator teeth.The influence of the number,position angle,depth and width on the cogging torque of slot was analyzed,and the influence of simultaneous changes in dual parameters on cogging torque was analyzed.Prototypes was made for testing,to compare the performance parameters of the motor before and after the slotting.The results show that reasonable position and size of the stator slot can effectively reduce the cogging torque of permanent magnet synchronous motor.

关 键 词：永磁电机 齿槽转矩 辅助槽 定子结构 

分 类 号：TM351[电气工程—电机]