Core loss Consideration for d-q axis Inductance Measurement of IPMSM

매입형 영구자석 동기 전동기의 d-q축 인덕턴스 측정 및 철손의 고려

This paper deals with d-q axis inductance measurements of IPMSM considering core loss at low speed. d-q axis inductance measurements generally are conducted at rated speed and parallel core loss model can be used to exclude core loss effects on inductances. Core loss is generally modeled parallel to input terminal of d-q axis equivalent circuit. Therefore, the effect of core loss on inductance calculation can be varied by core loss modeling. In this paper, d-q axis inductance is calculated parallel and series core loss modeling. Calculated inductances are compared to FEA results and it is concluded that series core loss modeling is more closed to FEA results at low speed.