%A LIU Rui-fang, YAN Deng-jun, HU Min-qiang
%T Investigation in Determining the Relative Position between Stator and Rotor of a PMSM in Electromagnetic Field Calculation
%0 Journal Article
%D 2006
%J Front. Electr. Electron. Eng.
%J Frontiers of Electrical and Electronic Engineering
%@ 2095-2732
%R 10.1007/s11460-005-0007-7
%P 67-71
%V 1
%N 1
%U {https://journal.hep.com.cn/fee/EN/10.1007/s11460-005-0007-7
%8 2006-03-05
%X When designing a universal finite element software for analyzing a permanent magnet synchronous motor, the relative position of the stator and rotor remains unknown. However, determining the relative position is a precondition for electromagnetic field calculation. Through analyzing the basic relationship of variables in a synchronous machine, the characteristics of an air-gap-resultant electromotive force and an inner power angle under a special inner power factor angle are obtained. A method similar to inverse problem solving is proposed. A series of electromagnetic field calculation under different armature current initial phase angles are carried out, and through searching the field of a special inner power factor angle, the relative position of the rotor and the stator can be determined subsequently.