基于滑模的感应电机无速度传感器矢量控制

Speed sensorless vector control of induction motor based on sliding mode

针对在感应电机牵引传动系统中,速度传感器的存在会显著降低系统可靠性,并会增加系统成本的问题,提出一种基于滑模观测器的无速度传感器控制技术,用于感应电机牵引传动系统。建立感应电机状态空间模型,选取滑模面得到感应电机基于滑模观测器的模型。利用波波夫超稳定性理论得到估计速度。利用仿真对所研究的方法进行性能验证。

Aiming at the problem that in induction motor traction drive system,the presence of speed sensor can significantly reduce system reliability and increase system cost,a speed sensorless vector control technology based on sliding mode observer is proposed for induction motor traction drive system.A state space model for induction motor is established,sliding surface is selected to obtain the model for induction motor based on the sliding mode observer.Estimated velocity is obtained by the Popov’s superstability theory.Performance of the method under study is verified by simulation.