Cogging Torque Analysis of Novel Dual-Rotor Axial Field Flux-Switching Permanent Magnet Machine

Abstract:

The cogging torque of a novel dual-rotor axial field flux-switching permanent magnet (DRAFFSPM) machine is investigated in this paper. The analytical equation of the DRAFFSPM machine is deduced. Based on 3D finite element method, the influences of the design parameters on the cogging torque are analyzed. The H-shaped stator tooth with slot chamfer is proposed and the slot opening width and chamfer thickness are optimized to reduce the cogging torque. It shows that the cogging torque is the minimum when the stator tooth width and stator magnet width equal to 8^o and 7.5^o mech., respectively. The cogging torque can be reduced by ~64% when the rotor pole width is 1.6 times that of the original design. The cogging torque can be reduced by ~80% when the chamfer is added in the stator slot.

• Periodical: Applied Mechanics and Materials (Volumes 416-417)
• Pages: 276-280
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.416-417.276
• Online since: September 2013
• Authors: Li Hao, Ming Yao Lin, Da Xu, Xing He Fu, Wei Zhang
• Keywords: Axial Field, Cogging Torque, Finite Element Analysis (FEA), Flux-Switching, Permanent Magnet Machine

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