【摘要】 针对电动轻型车辆用驱动电机，设计开发了一种新型永磁体内置式永磁同步电机(IPMSM)．电机的转子采用永磁体切向充磁(spoke-type)结构，在保证转子机械强度和兼顾电机电磁特性的前提下，提出了一种IPMSM用spoke-type混合冲片转子结构，并采用了非均匀气隙设计．采用有限元法分析计算了电机的空载反电动势波形、齿槽转矩及不同工作条件下的输出转矩特性，并与采用内置V-type转子结构的IPMSM进行对比分析．研究分析结果表明，在保证与内置V-type转子结构的IPMSM相同电磁特性的条件下，采用本文所提出的spoke-type混合冲片转子结构，永磁体的用量可减少32%，从而实现了降低电动轻型车辆用驱动电机的制造成本．更多还原

【Abstract】 A new type of interior permanent magnet synchronous motor(IPMSM)was designed to utilize for the drive motor of a light electric vehicle. The rotor of the motor adopted the permanent magnet(PM)tangential magnetization(spoke-type)structure. On the premise of ensuring the rotor mechanical strength and the electromagnetic motor characteristics,a spoke-type hybrid punching rotor structure for IPMSM was proposed,which adopted the nonuniform air gap. The finite element method was used to analyze the back electromotive force(EMF)waveform,cogging torque,and output torque characteristics under different working conditions. The proposed structure and the Ⅴ-type structure were compared. The results showed that under the condition of the same electromagnetic characteristics,the amount of PM could be reduced by 32% after using the proposed spoke-type rotor structure. Thus,this proposed design can reduce the manufacturing costs of driving motors for light electric vehicles.更多还原