一种改进的无速度传感器感应电机直接转矩控制

Improved Direct Torque Control for Induction Motor Sensorless Drive

直接转矩控制 (DTC)对于异步电机而言 ,它能产生快速及好的鲁棒性响应。介绍了一种新的对于无速度感应电动机基于空间矢量 (SVM)模型的直接力矩和磁链控制 ,它能降低稳态时力矩、磁链和速度的波动。在全速度范围无速度传感应用中将产生更好的稳态性能的同时保留DTC的暂态优点。

Direct torque control(DTC) is known to produce quick and robust response in ac drives.A new direct torque and flux control based on space-vector modulation(DTC-SVM) for induction motor sensorless drives is introduced. It is able to reduce the torque ,current and speed pulsation during steady state. It is concluded by simulation results that the proposed control produces better results for steady-state operation than the classical DTC for a wide speed range, and the DTC transient merits are preserved.