关键词：
coupling of magnetic and electric equations;permanent magnet axial-field brushless DC motor;phase belt moving model;varying network circuit
摘要：
Several approaches have been developed for a better simulation of disc type permanent magnet axial magnetic field brushless DC motor (AMF BLDCM). Combining transient electromagnetic field equation with varying network electric circuit equation, and taking into account of the effect of 3-D distribution of air gap magnetic field in disc type motor, an accurate mathematical model simulating the dynamic performances of BLDCM system of disc type is developed in this paper. The phase belt moving model dealing with the rotor movement in disc type motor is also built up. Finally, the method is applied to the analysis of a prototype motor, and the calculated results agree well with the experimented ones.
