Abstract
In recent years, the speed-sensorless vector control of asynchronous motor has become a research focus in modern alternating current machine control. In order to further improve the performance of the speed-sensorless vector control of asynchronous motor, the speed estimation method of the speed-sensorless should have a high accuracy. In this dissertation, the estimation method of the model reference adaptive system is used to identify the actual speed of asynchronous motor and the voltage model and the current model are respectively used as the reference model and the adjustable model of the adaptive system, the self closed loop can be better achieved and the actual speed of asynchronous motor can be more accurately identified with the model reference adaptive system. Finally, speed-sensorless vector control system based on the model reference adaptive system is simulated and the actual speed of motor can be accurately detected. Therefore, this method has certain feasibility.
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