Optimization Study of a Double Stator Hybrid Excited Permanent Magnet Vernier Machine

本课题针对双定子混合励磁永磁游标电动机（DS-HEPMVM），分析了其转矩产生和功率因数提高的机理，比较了不同转子结构（异极转子和Halbach转子）的性能。然后，基于冻结磁导率法，对1 kW游标电机的两种转子结构进行了电磁设计和优化，分析了定子永磁体、转子永磁体和励磁绕组的转矩贡献。最后，建立了双定子混合励磁游标电机的初步控制系统，该研究可显著提高永磁同步电机的性能，促进永磁同步电机在直接驱动领域的实际应用。

In this project, for the dual-stator hybrid excitation Permanent Magnet vernier motor (DS-HEPMVM), the mechanism of torque generation and power factor improvement are analyzed, and the performance with different rotor structures (consequent-pole rotor and Halbach-rotor) are compared. Then the electromagnetic design and optimization of the two rotor structures of the 1kW vernier motor are conducted, and the torque contribution of the stator-PM, rotor-PM and field winding are analyzed, based on the frozen permeability method. Finally, a preliminary control system for a dual stator hybrid excitation vernier motor was established.This research can significantly improve the performance of the PMVM, and promote the practical application of the PMVM in direct drive applications.