Demagnetization Current Evaluations Using Finite Element Method and Magnetic Equivalent Circuit modelling in a Pole Changing Memory Motor

摘要

This paper deals with the demagnetization current evaluations using Finite Element Method (FEM) and magnetic equivalent circuit modelling in a Pole Changing Memory Motor (PCMM). The focus of this paper is the characteristics evaluation relative to the current density and the magnet numbers of machine for pole changing condition in PCMMs. Magnetic equivalent circuit modeling method and demagnetizing currents characteristics of PCMM according to the magnet thickness variation are introduced.