Research on Loss of Axial Field Flux-Switching Permanent Magnet Machine

Flux-switching permanent magnet (FSPM) machine has received a great deal of attention of scholars at home and abroad because of its simple rotor structure and good performances. On the basis of FSPM machine, a novel axial field flux-switching permanent magnet (AFFSPM) machine is presented in this paper. The AFFSPM machine has significant advantages, such as the short axial size, high torque density and fault tolerant capability. In order to improve the operation performance of the machine, the loss should be considered and calculated. In this paper, the finite element analysis software JMAG is used to establish the 3-D model of the AFFSPM machine, on which the copper loss and iron loss are investigated by transient analysis. It is found that the loss is varied with the parameters, including the number of the rotor poles, the dimension of rotor pole, and the thickness of the permanent magnet etc.. A three-phase AFFSPM machine is optimized to minimize the loss, and the performances of the optimized machine are analyzed in the paper.