异步电机无速度传感器矢量控制系统研究

The Research on Speed Sensorless Vector Control System for Asynchronous Motor

根据异步电动机矢量控制原理,本文以两相旋转坐标系电流模型作为可调模型,电压模型为参考模型,构建无速度传感器矢量控制系统。采用模型参考自适应(MRAS,model reference adaptive system)方法对系统进行速度估算,并且在Matlab/Simulink仿真环境下进行实验研究。实验结果表明,所采取的方法能够实时对电机转速进行辨识和估算,使电机转速、电流闭环调速系统具有良好的动态特性。

According to the vector control principle of asynchronous motor,a speed sensorless vector control system is constructed by using the current model as the adjustable model and the voltage model as the reference model in two-phase rotating coordinate system.The paper uses MRAS to calculate the speed,and the experimental study is carried out in the Matlab/Simulink simulation environment.The results show that the method can be used to identify and estimate the motor speed in real time,which has good dynamic performance of the motor speed and current closed loop speed control svstem.