This paper proposes a topological structure of a new type of external rotor per-manent-magnet motor based on its stator structure.The modulating teeth,which has the modu-lation action for magnetic field,are introduced into the stator of the motor,and the magnetic field is fully utilized through modifying the design of the modulating teeth,so that the low cog-ging torque and stable electromagnetic torque of the motor are obtained.This paper describes the working principle of the external rotor permanent-magnet vernier motor with new-type of sta-tor in detail,provides the specific two-dimensional structure diagram and design parameters,and carries out the analysis and explaination for the electromagnetic performance,air-gap mag-netic density,no-load back electromotive force and harmonic distribution.The research results show that the external rotor permanent-magnet vernier motor with new type of stator has effective harmonic modulation function and has the significantly-reduced cogging torque to realize the sta-ble torque output.
维普
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