【摘要】 由齿槽转矩造成的推力波动是影响盘式永磁电机运行性能的一个重要因素。为削弱齿槽转矩,采用基于能量法和傅里叶分解的解析分析方法推导出了齿槽转矩解析表达式,在此基础上研究了分数槽绕组对齿槽转矩的削弱作用,结合定子槽口宽度对齿槽转矩的影响,提出了减少盘式永磁电机齿槽转矩的优化方案,并利用有限元法对此优化方案进行了仿真分析和验证。研究结果证明,采用分数槽绕组和槽口优化相结合的方法能有效地削弱盘式电机的齿槽转矩。更多还原

【Abstract】 Force ripple caused by cogging torque is one of the important issues which prevent the motor from acquiring high performance.Aiming at reducing the cogging torque,an analytical method based on the energy method and the Fourier series was applied to obtain the expression of cogging force.Based on the expressions,a method of weakening cogging torque by adopting fractional-slot windings combined with slot opening optimization was proposed.The results acquired by finite element analysis show that the proposed method of combination of fractional-slot winding and slot opening optimization can effectively reduce the cogging torque in disc-type permanent magnet motors.更多还原