外转子交替极伺服永磁电机低转矩脉动设计与综合优化  

Design and Optimization of Low-torque-ripple Consequent-pole Permanent Magnet Servo Motor with Outer Rotor

作　　者：梁泳涛 贾少锋 梁得亮[1] LIANG Yong-tao;JIA Shao-feng;LIANG De-liang(State Key Laboratory of Power Equipment and Electrical Insulation,Xi'an Jiaotong University,Xi'an 710049)

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《导航与控制》2021年第5期61-70,共10页Navigation and Control

摘　　要：针对伺服电机减少永磁体用量、降低转矩脉动的需求,研究了削弱外转子交替极永磁电机转矩脉动的方法。对交替极永磁电机转矩脉动的产生机理进行了分析,可以通过永磁体极弧系数优化、永磁机不等极弧系数配合和定子齿偏心结构等方法削弱电机转矩脉动,运用有限元分析软件Ansys Maxwell对电机进行二维建模,并对比了不同优化方法对电机转矩脉动削弱的效果,最终验证了采用多种方法对外转子交替极永磁电机转矩脉动进行综合优化能够有效削弱电机的转矩脉动。In order to reduce the consumption of permanent magnet material and the torque ripple of servo motor, the methods of weakening the torque ripple of consequent-pole permanent magnet(CPPM) servo motor are studied. Firstly, the mechanism of torque ripple of CPPM motor is analyzed. Methods of pole arc coefficient optimization, asymmetrical pole arc coefficient matching and stator tooth eccentric structure are adopted to reduce the torque ripple. Two-dimensional models of different structure motors are built with the finite element analysis(FEA) software Ansys Maxwell. The effects of different optimization methods to reduce the torque ripple are compared. Finally, it is verified that the comprehensive optimization of the torque ripple of the CPPM motor could effectively reduce the torque ripple.

关 键 词：交替极永磁电机 转矩脉动 不等极弧系数 定子齿偏心 优化分析 

分 类 号：TM351[电气工程—电机]