Speed Sensorless Control for IPMSM based on an Instantaneous Reactive Power and a Fuzzy PI Compensator

초록

In this paper, a new speed sensorless control based on an instantaneous reactive power and fuzzy controller is 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 disturbances. Also, the estimated speeds are compensated by using an instantaneous reactive power in synchronously rotating reference frame. In a fuzzy PI compensator, the PI gains 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.