Simulation and experiment of a PM brushless single phase motor using field circuit coupling FEM

SONG Tengfei, LIU Huijuan, ZHANG Qian, ZHANG Zhenyang

(School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract: In order to make the PM brushless singlephase motor have the selfstarting capability and without complex structure, a new kinds of asymmetric airgap topology which can lead to the d, qaxis magnetic circuit asymmetry of the PM brushless singlephase motor was presented. The field circuit coupling FEM simulation model of the proposed motor controlled with V/f control method was built by using 2D Maxwell software, and the performances such as the airgap flux density and output torque of the proposed motor were investigated. Finally, the experimental platform of the prototype and its controlling system were set up. The performance comparison of the experimental results and simulation results of the proposed motor running in various operating mode were reported. All the results show that the asymmetric airgap PM brushless single phase motor is potential to apply in the household appliances applications.

Key words: PM brushless singlephase motor; Maxwell software; field circuit coupling FEM simulation; V/f control method