关键词: 永磁同步电机, 齿槽转矩, 气隙磁密, 谐波畸变率, 有限元

Abstract:

In order to enhance the electromagnetic performance of permanent magnet synchronous motor, a novel surface mount permanent magnet synchronous motor topology was proposed. The structure of the permanent magnet was composed of conventional surface mount and built-in double. The finite element method was used for analyzing the topology of the new motor. The air gap flux, cogging torque and air gap harmonic distortion of three kinds of the same size structure were analyzed respectively. The results showd that the new topology not only improved the amplitude of the air gap, but also adjusted the harmonic distortion rate, and made the magnetic flux more sinusoidal.

Key words: permanent magnet synchronous motor, cogging torque, air gap flux density, harmonic distortion rate, finite element method