笼型异步风力发电机新型滑模无速度传感器控制

A Sensorless Control Method Based on Novel Sliding Mode for Squirrel-cage Induction Wind Generator

设计了基于滑模的笼型异步风力发电机无速度传感器控制算法,提出了一种新型滑模面,根据李亚普诺夫稳定性理论设计了速度自适应律,分析了滑模面参数选择对提高系统收敛速度的影响。与传统滑模无速度传感器控制相比,该算法可降低滑模增益的选择,提高系统稳定性和收敛速度。最后,通过仿真验证了该算法的控制性能。

A sensorless control method based on sliding mode for squirrel-cage induction wind generator is designed. A novel sliding surface is proposed. The speed adaptive law is de- signed based on Lyapunov stability theory. The effect of the pa- rameters in sliding surface on the convergence rate of speed is analyzed. Compared to the traditional sliding mode sensorless control method, this method can reduce the value of the gain of the sliding mode. Besides, the stability and the convergence rate are improved. Finally, simulation results validate the perfor- mance of the proposed sensorless control strategy.