关键词: 永磁同步电机, 径向电磁力, 振动分析, 多目标优化

Abstract: Aiming at the common vibration and noise problems during the operation of automotive permanent magnet motors, the method of cogging arc offset and the optimization of permanent magnet topology were proposed to suppress the electromagnetic vibration. The method of cogging arc offset was used to suppress the radial electromagnetic force on the cogging top, and the Taguchi method was adopted to optimize the topology of the motor to improve the camber ratio of the motor and weaken the electromagnetic vibration. The effectiveness of the optimization method was verified by comparing the convex pole ratio, output torque, torque pulsation and radial electromagnetic force density at the tooth apex before and after optimization.

Key words: permanent magnet synchronous motor ( PMSM), radial electromagnetic force, vibration analysis, multiobjective optimization