关键词: 混合励磁同步电动机, 转矩脉动, 气隙磁导法, 虚位移法

Abstract:

Based on the torque ripple during the operation of hybrid excited synchronous motor(HESM), the mechanism of torque ripple was deduced theoretically by using air-gap permeace method and virtual displacement method,and the main influencing factors of torque ripple were analyzed. A HESM model was established by using finite element simulation software, the HESM was optimized from three aspects including armature winding, stator chute and pole-arc coefficient. At last, the three kinds of optimization measures were combined to simulate the rated operation and field weakening operation conditions of the motor. The results show that the proposed optimization measures have obviously weakened the torque ripple under the rated operation and the field weakening operation of the motor, which can provide reference for the design of HESM.

Key words: hybrid excitation synchronous motor (HESM), torque ripple, air-gap permeace method, virtual displacement method