关键词: 轮辐式永磁同步电机, 转矩波动优化, 遗传算法, 多目标优化

Abstract: Torque ripple directly affects the reliability of permanent magnet synchronous motor ( PMSM ) used in mining conveyor. This study focuses on a spoke-type rotor PMSM designed for such applications and employs three optimization methods-rotor notch optimization,auxiliary slots in the rotor core,and an uneven air gap-to reduce the torque ripple. The impact of each method on the average torque and torque ripple was evaluated. Based on the evaluation results,a combined approach integrating rotor notch optimization with the uneven air gap method was implemented to minimize torque ripple while maximizing output torque. The results demonstrate that the optimized design not only effectively suppresses torque ripple but also enhances the motor’ s output torque.

Key words: spoke-type permanent magnet synchronous motor, torque ripple optimization, genetic algorithm, multiobjective optimization