Abstract
Induction motors are widely used for electric instruments because of the toughness and the high reliability. It is necessary for the high efficiency design of motors to clarify the iron losses (the eddy current loss and the hysteresis loss) of the rotor and stator cores. It is difficult to clarify the iron loss by experiments. In this paper, the eddy current distribution in a silicon steel sheet of the squirrel-cage induction motor is analyzed by the 3-D finite element method to clarify the distribution of eddy current loss and hysteresis loss in the silicon steel sheet quantitatively. The validity of our method is clarified by comparing the calculated results and measured ones.
