永磁体削角对表贴式永磁同步电机齿槽转矩的影响研究

In fluence of Permanent Magnets Chamfering on Cogging Torque of Surface-Mounted Permanent Magnet Synchronous Motor

针对永磁电机的齿槽转矩影响其控制精度和性能的问题，本文提出削角可以有效抑制齿槽转矩的方案。以一台30槽10极永磁电机为例，利用数值仿真原理，建立电机电磁场有限元模型，对削角削弱齿槽转矩的方法进行仿真分析。研究表明，齿槽转矩的大小与削角高度和削角宽度有关，选取合适的削角高度和宽度可以有效地削弱齿槽转矩。仿真结果证明了本文基于削角的齿槽转矩削弱方法的有效性和正确性。

Aiming at the problem that the cogging torque of permanent magnet motor influences its control precision and performance, this paper proposed a method that the permanent magnets chamfering can suppress the cogging torque effectively. Take a 30- slot/10-pole permanent magnet motor as an example, the finite element model of the electromagnetic field of the motor is established by using the numerical simulation principle,The method of reducing the cogging torque by chamfering is simulated and analyzed.The results show that the size of the cogging torque is related to the height and the width of the permanent magnet chamfering. Selecting the appropriate cutting angle height and width can effectively reducing the cogging torque. The simulation results show the effectiveness and correctness of the method of cogging torque reduction.