大型风电机组桨距角跟踪鲁棒自适应反演控制

Robust Adaptive Blade Pitch Angle Tracking Backstepping Control for Large-scale Wind Turbines

摘要:

针对具有很强非线性的风力机桨叶系统,利用动量矩定理,建立桨叶动力学数学模型,采用自适应反演控制,设计独立变桨鲁棒自适应桨距角跟踪控制器；该控制方法采用在实际控制量中,引入自适应鲁棒项,克服和消除不确定性对桨叶系统的影响；利用Matlab/Simulink软件,搭建风力机仿真平台,仿真结果验证了所提出控制方法的可行性和有效性；在桨叶系统参数不确定、受到未知不平衡载荷的情况下,经过自适应过程,设计的控制器较好地实现了风力机桨叶桨距角独立、快速跟踪各自期望的桨距角。

Abstract:

For highly nonlinear blades system of wind turbine,Blades dynamic mathematical model are established.Individual pitch robust adaptive controller are designed by use of backstepping control.The proposed control method introduces a robust adaptive item in the real control, by which to overcome and eliminate the impact of uncertainty on the blade system.By use of Matlab/Simulink software, wind turbine simulation platform are built, simulation results demonstrate the feasibility and effectiveness of the proposed control method,when blade system lie in parameters uncertainty and subjected to unknown unbalanced loads, the designed controller can make pitch angle of the three blades quickly track their expectation pitch angles.