3-D time-stepping analysis of induction motor by new equivalent magnetic circuit network method

A new time-stepping 3-D analysis method for analyzing induction motors is p roposed. The method can analyze induction motor with faster computation tim e and less memory requirement than conventional numerical methods by using only scalar potential. The analysis model is divided into hexahedral elemen ts and then an equivalent magnetic network is constructed by connecting the node of each element center. Also, the MMF by induced current combines pas sive source Into the network. From comparisons between the results of analy sis and experiments, it is verified that the proposed method can estimate t he torque, harmonic field, and etc. versus time with good accuracy.