磁极结构对永磁同步伺服电机转矩脉动的影响  

Influence of magnetic pole structure on torque ripple of permanent magnet synchronous servo motor

作　　者：于慎波[1] 李野 钟双双[1] YU Shen-bo;LI Ye;ZHONG Shuang-shuang(School of Mechanical Engineering, Shenyang University of Technology, Shenyang 100870, China)

机构地区：[1]沈阳工业大学机械工程学院,沈阳100870

出　　处：《重型机械》2018年第3期37-42,共6页Heavy Machinery

摘　　要：高转矩脉动是高精密数控机床用永磁同步伺服电机所必须要解决的问题。本文从永磁极外形结构设计的角度出发,通过对比传统瓦片式磁极,提出了一种三段弧式磁极结构。以8极12槽拼接式闭口槽电机模型为载体进行有限元仿真分析,探究不同截面中心系数下的额定转矩和转矩脉动的变化规律。结论表明三段弧式磁极结构能够有效地降低转矩波动,并且选择合适的中心截面系数和充磁方式能够进一步削弱电机的转矩脉动,为后续高精密电机设计提供思路。For the high precision permanent magnet synchronous motor （PMSM） servo system of CNC ma- chine, torque ripple is a problem that nmst be solved. This paper have compared traditional tile permanent mag- nets and proposed a 3-are structure of magnetic pole from the point of the permanent magnetic pole shape de- sign. A 12/8-pole divided shape closed slot motor model is sinmlated and analyzed by using finite element （FEM） , and studied the change regulation of rated torque and torque ripple under the different section coeffi- cients. The results show that the 3-are structure of magnetic pole can effectively reduce the torque ripple, and the selections of appropriate center section coefficient and magnetization mode can further weaken the motor torque ripple, which provides reference to design high precision motor.

关 键 词：永磁体结构 拼接式定子 转矩脉动 永磁同步电机 

分 类 号：TM921[电气工程—电力电子与电力传动]