关键词: 轴向磁通永磁电机, 环形绕组, 电感计算, 谐波, 气隙长度

Abstract: High-speed axial-flux permanent magnet motors have potential application prospects in low-power generator sets. In order to eliminate tooth harmonics, high-speed axial flux motors generally use slotless iron cores and annular winding structures. In order to study the inductance of the kind of winding, the magnetic potential method and the winding function method were used to give the analytical expression of the inductance of the kind of winding, which could take into account the influence of the fundamental wave and harmonics of the winding on the inductance. The finite element method was used to verify the correctness of the analytical solution of the inductance. The conclusions given in the paper provide a theoretical reference for the subsequent steady-state and transient analysis of high-speed axial-flux permanent magnet motors.

Key words: axial-flux permanent magnet motor(AFPMM), toroidal winding, inductance calculation, harmonics, air gap length