Speed Sensorless Control for Interior Permanent Magnet Synchronous Motor based on an Instantaneous Reactive Power and a Fuzzy PI Compensator

순시무효전력과 퍼이 이득 보상기를 이용한 IPMSM의 속도 센서리스 제어

In this paper, a new speed sensorless control based on an instantaneous reactive power and a fuzzy PI compensator are proposed for the interior permanent magnet synchronous motor (IPMSM) drives. The conventional fixed gain PI and PID controllers are very sensitive to step change of command speed, parameter variations and load disturbance. Also, to the estimated speeds are compensated by using an instantaneous reactive power in synchronously rotating reference frame. In a fuzzy compensator, the system control parameters are adjusted by a fuzzy rule based system, which is a logical model of the human behavior for process control. The effectiveness of algorithm is confirmed by the experiments.