Comparison of Low-Pole Axial Flux-Switching and Surface Permanent Magnet Machines

摘要

This paper compares low-pole axial flux-switching and surface permanent magnet machines. Two machines both having 6-slot/4-pole configuration are designed at 1 kW, 720 r/min. 2-D and 3-D finite element analysis (FEA) are used for design and comparison. 2-D and 3-D FEA results of AxFSPM machine show 10% of discrepancy in output torque because of saturation of stator tooth. 2-D and 3-D FEA results of AxSPM machine correlate with a negligible discrepancy. Comparison results of the AxFSPM and AxSPM machines show that AxFSPM machine produces higher power and torque density than the AxSPM machine because of less active weight. The AxSPM machine is less saturated than AxFSPM machine.