改进新型齿结构对磁通切换永磁电机转矩指标的影响

Effect of Novel Tooth Structures on Torque Indexes of Flux Switching Permanent Magnet Motor

基于12槽/10极磁通切换永磁电机(FSPMM)提出了定子切边齿、转子U型槽齿、转子凸缘齿3种新型齿形,以有效减小FSPMM电机的齿槽转矩和转矩波动。通过2-D有限元法从平均转矩、齿槽转矩、转矩波动等方面对不同新型齿形的FSPMM的性能进行了全面的分析和评估。结果验证了所提出的3种新型齿形状,特别是转子U型槽齿和凸缘齿可以减小齿槽转矩和转矩波动,平均转矩只有轻微的减小。

Trimming teeth,U-shaped teeth and flange teeth based on 12-slot/10-pole flux switching permanent magnet motor(FSPMM)was proposed to reduce effectively cogging torque and torque ripple.The 2-D finite element method analyzed and evaluated torque characteristics of different novel teeth from average electromagnetic torque,cogging torque,torque ripple.The results verify that the proposed three novel tooth shapes,especially rotor with U-shaped teeth and rotor with flange teeth,could effectively reduce cogging torque and torque ripple at only slight reduce in the average electromagnetic torque.