Magnetic characteristic analysis of SPM motor by means of dynamic E&S modeling

To make clear iron loss distributions in a stator core of SPM motor under high flux density condition over 1.3T, the integral-type dynamic E&S modeling is employed. The magnetic property database for this analysis is newly prepared in the measurements of the vector magnetic properties of the core material under high flux density conditions up to 1.8T, and then the magnetic reluctivity and hysteresis coefficients of the integral-type dynamic E&S modeling are derived. The results show that there is an applicable region of the integral-type dynamic E&S modeling to obtain a good convergence. We also point out some problems encountered in applying integral-type dynamic E&S modeling.