High speed PMSM control without speed encoder based on Q-MRAS observer

Abstarct In this paper, the Permanent magnet synchronous motor is operated at the high speed mode basing on the vector control strategy. This running mode is unsured by the High speed algorithm, where its principle deals with a direct stator current reduction strategy. In addition, the aim of this paper it to control the motor without speed encoder. Therefore, the Model Reference Adaptive System (MRAS) is performed to avoide the speed encoder use and to perform an efficient reactive power based one.