Recently, wind power production has been under the focus in generating power and became one of the main sources of alternative energy. Generating of maximum power from wind energy conversion system (WECS) requires accurate estimation of aerodynamic torque and uncertainties presented in the system. The current paper proposed the generalized high‐order disturbance observer (GHODO) with integral sliding mode control (ISMC) for extraction of maximum power via variable speed wind turbine by accurate estimation of wind speed. The assumption in previous works that considers the aerodynamic torque as slow‐varying is not applicable for the real system. Therefore, the high‐order disturbance observers were designed for precise estimation of uncertainties with fast‐changing behavior. A robust control system was designed to control the speed of the rotor at the optimal speed ratio. The obtained simulation results have shown the better performance characteristics than conventional linear quadratic regulator (LQR) approach. The stability of the proposed algorithm was proven by Lyapunov stability anaysis. Simulations results were obtained in Matlab/Simulink environment.

中文翻译：

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基于干扰观察者的风能转换系统整体滑模控制

最近，风力发电一直是发电的重点，已成为替代能源的主要来源之一。从风能转换系统（WECS）产生最大功率需要准确估算空气动力学扭矩和系统中存在的不确定性。本文提出了带有积分滑模控制（ISMC）的广义高阶扰动观测器（GHODO），用于通过精确估计风速来通过变速风力涡轮机提取最大功率。先前工作中将空气动力学转矩视为缓慢变化的假设不适用于实际系统。因此，设计高阶扰动观测器是为了精确估计具有快速变化行为的不确定性。设计了鲁棒的控制系统，以最佳速度比控制转子的速度。获得的仿真结果显示出比常规线性二次调节器（LQR）方法更好的性能特征。Lyapunov稳定性分析证明了该算法的稳定性。在Matlab / Simulink环境中获得了仿真结果。