关键词: 双转子, 磁通切换弧线电机, 有限转角, 转矩特性, 模块化定子

Abstract: Flux switching permanent magnet motor is a kind of motor with permanent magnet embedded in the stator. It has the characteristics of high utilization rate of permanent magnet and good safety. It has obvious advantages in the field of limited angle drive such as airborne radar and robot joints. Further reducing the torque ripple of this type of motor and increasing its power density are the current research hotspots. A novel arc-linear flux switching motor was proposed, which adopted double-rotor and modular-stator structures. In the new topology, the best stator interval was deduced to offset the end torque, and the influence of the internal and external rotor offset angles on the main harmonics of the cogging torque was analyzed to reduce the torque ripple.In contrast with the single side arc-linear flux switching motor, the new topology has higher utilization ratio of permanent magnet and better torque characteristics. The above conclusions have been proved by finite element analysis. It has reference value for the engineering application of flux switching motor in the field of limited angle.

Key words: double-rotor,arc-linear flux switching permanent-magnet motor(Arc FSPM), limited angle, torque characteristics, modular-stator