关键词: 大功率电动机车；, 电枢反应；, 不对称偏心气隙；, 冻结磁导率；, 联合仿真

Abstract: In order to suppress the influence of armature reaction of the drive motor for high-power electric motorcycle,  an asymmetric air gap structure was designed based on the characteristics of unidirectional drive, and the eccentric air gap was only utilized in the strengthened magnetic field. It was shown that the structure can significantly suppress the distortion of air gap magnetic density and back EMF caused by the armature reaction, weaken the torque ripple, improve the torque output capability and efficiency by finite element analysis and frozen permeability method. The results of co-simulation and prototype test show that the motor had a wide speed range and good speed regulation performance, which verified the effectiveness and feasibility of the designed motor.

Key words: high-power electric motorcycle, , armature reaction, , asymmetric air gap, , frozen permeability, , co-simulation