异步电机无速度传感器矢量控制系统研究

IIn order to improve the performance of speed estimator in middle-high voltage field, a speed sensorless control scheme for incuction motor fed by three-level inverter was proposed. The scheme adopted indirect field oriented control (IFOC) method, three-level simplified SVPWM algorithm,and model reference adaptive system (MRAS) to realize the sensorless vector control simulation of incuction motor fed by three-level inverter in Matlab/Simulink. The simulation results show the system has good static and dynamic performance,and the validity of the proposed scheme is also proved.