关键词: 永磁同步电机, 再制造, 齿槽转矩, 转子再设计, 偏心角度

Abstract:

A rotor re-design method was advised to reduce the cogging torque of re-manufacturing vehicle permanent magnet synchronous motors, and the influence of the eccentricity angle of the rotor eccentric structure on the cogging torque was studied. Through finite element simulation, based on the determination of the maximum and minimum air gap length, the motor models with different eccentric angles were established, the no-load and load performances of each model were compared and analyzed, and the eccentricity angle was optimized.The results show that when the eccentricity angle was 2°,the remanufacturing motor cogging torque was reduced by 10% compared with the original motor and the output torque was increased by 1.2 N·m. The remanufacturing motor cogging torque was redueced to improve the performance of remanufacturing motors by the rotor eccentric re-design.

Key words: permanent magnet synchronous motor (PMSM), remanufacturing, cogging torque, rotor re-design, eccentricity angle