This paper introduces a new topology of multi-stator hybrid excitation permanent magnet synchronous motor with flux weakening capacity. The presented machine features a hybrid magnetic circuit in which the flux generated by PMs are routed into two paths by employing an axial stator. The detailed structure of the presented machine is given in this paper together with the principle of flux weakening and performance characteristics. In addition, the cogging torque of the presented machine is analyzed using mathematical decomposition, and the principle of weak magnetic speed regulation is explained. Using the Maxwell 3-D simulation, the cogging torque in the case of different slot opening width, different number of slot and different sector size is analyzed. A method of reducing the cogging torque is advised. The flux and torque with different axial MMF and different radial MMF are calculated. The motor has an outstanding flux weakening capability and wide speed range thus gained a superiority to be used in variable speed driving applications such as EVs motors.
Analysis of cogging torque and flux weakening capability of a novel multi-stator hybrid excitation permanent magnet synchronous motor
2017-08-01
683677 byte
Conference paper
Electronic Resource
English
British Library Online Contents | 2018
|Method of Reducing Cogging Torque in Permanent Magnet Motor
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