Hybrid Commutation Method of Circular Winding Brushless DC Motor
Zhang Qinghu1, Jia Zhewu2, Wang Dong1
1. National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan 430033 China; 2. Naval Research Institute Beijing 102401 China
Abstract：Circular winding brushless DC motor (CWBLDCM) is a novel non-sinusoidal multiphase permanent-magnet one whose torque performance is closely related to the commutation of current. This paper proposes a hybrid commutation method, in which both the back-EMF and the DC-bus voltage are exploited to improve the torque performance. With the variation of two commutation parameters, β and γ, the hybrid commutation process can be classified into four typical states. Firstly, all commutation states are analyzed, simulated, and then verified by experiment. Then, the torque performance under different commutation states is compared. Finally, according to the comparison result, an optimized control strategy is recommended for the CWBLDC motor.
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2022, Vol. 37 
