Initial Rotor Position Estimation for an Interior Permanent-Magnet Synchronous Motor using Inductance Saturation

인덕턴스의 포화현상을 이용한 IPMSM의 회전자 초기위치 추정

This paper propose a method to detect the rotor position of IPMSM(Interior permanent magnet synchronous motor) at standstill without a position sensor. The proposed method is based on current variation caused by the magnetic saturation of stator core as rotor position. By choosing an appropriate voltage vector and applying it to phase winding, it enables the algorithm to discern between a north pole and south pole, and subsequently estimates an absolute position. This method dose not depend on the model of the motor and the motor parameter.