Loss minimization design using magnetic equivalent circuit for a permanent magnet synchronous motor

This paper proposes a simple magnetic equivalent circuit using permeance method in order to design rough configurations of the lowest loss motor. First, the iron loss is calculated by the proposed method and compared with the analysis result by finite element method (FEM). As a result, the error of the calculation results between the proposed method and the FEM is 2.9%. Next, the motor losses are calculated by the proposed method when the several specifications are changed. As a result, these results agree in principle with that of the FEM. Therefore, the validity of the proposed method is confirmed. In addition, the method of the motor design is considered in terms of the loss.