Terminal滑模直驱风力发电变桨控制研究

由于风能的随机性和不稳定性的特点，加大了风力发电机组的控制难度。以直驱永磁同步风力发电机组为研究对象，以风速在额定值以上时使风力机输出功率稳定在额定值为研究目标，针对传统变桨距控制存在力矩抖动大，受干扰严重等缺点，提出一种基于Terminal滑模控制的双模控制方法。所设计的控制器采用Terminal滑模控制，控制策略采用功率和转速同时进行控制。利用Matlab/Simulink为实验平台，搭建Terminal滑模直驱风力发电机变桨控制模型，通过仿真验证，此方法与传统的变桨控制方法比较，有输出功率稳定无抖动、无超调、桨距角的变化更加平滑、抗干扰性强等优点。

Direct-drive wind power pitch control based on Terminal sliding mode

Because of the randomness and uncertainty of wind energy, the control difficulty of wind generating set is increased. The direct drive permanent magnet synchronous wind turbine is taken as an object of the research. The goal of this study is to make the motor output power keep the rated value when the wind speed is above the rated value. The traditional pitch control has shortcomings such as the big torque jitter and susceptibility to interference, a dual-mode control method is proposed which is based on Terminal sliding mode control (SMC). The control strategy is using power and speed control at the same time. The experimental platform of Terminal sliding mode direct-drive wind turbine pitch control model is built by Matlab/Simulink. The simulation results show that compare to traditional pitch control, the new control method has the advantage such as output power stability and jitter-free, no overshoot, placid pitch angle change and strong anti-jamming.