하이브리드 전기자동차용 매입형 영구자석 동기전동기의 온도보상에 의한 토크제어

The interior permanent magnet synchronous motor (IPMSM) with its robust rotor construction, using reluctance torque and flux weakening capability is suitable for hybrid electric vehicle (HEV) application where wide speed and torque range is required. Characteristic of permanent magnet is depend on temperature, so flux of motor is varied and torque is also changed according to temperature. This paper presents the novel current compensation algorithm of IPMSM for HEV. To reduce effect of temperature in IPMSM, command current is selected using current map which is obtained by linear interpolation. The datum point is selected at 20, 80, 100 and 150 degrees. We make simulation and experiment to confirm current controllability.