风力发电机组桨距角鲁棒控制器的设计与仿真  

The Pitch Robust Controller Design and Simulation of Wind Turbine Power System

作　　者：刘吉宏 吕跃刚[1] 徐大平[1] 

机构地区：[1]华北电力大学控制科学与工程学院,北京102206

出　　处：《计算机仿真》2010年第3期267-270,313,共5页Computer Simulation

基　　金：国家自然科学基金(50677021);教育部重点项目基金(105049)

摘　　要：在空气动力学原理基础上建立了变浆距风力发电机组非线性数学模型,以此为基础采用基于动态逆的非线性内模控制方法设计了风力发电机组在额定风速以上工作时的桨距角鲁棒控制律,以使输出功率维持在额定值附近。设计是针对风力机的非线性数学模型进行的,克服了基于局域近似线性化模型设计方法的缺点,适应工况点大范围变动的情形,而且对系统参数摄动具有良好的鲁棒性,求解过程相对比较简单。以一台额定功率为300kW的实际风力发电机组为实例进行了对比仿真,结果表明了该方法能够满足控制要求,具有较好的动、静态特性和鲁棒性。The nonlinear mathematical model of variable pitch wind turbine power system is established based on the aerodynamics principle. On the basis of this model, the nonlinear internal model control method based on dynamic inversion is applied to design the pitch robust controller of the wind turbine power system which runs above the rated wind speed to maintain output power steady around the rated value. The design is based on the nonlinear mathematic model of wind turbine system and overcomes the disadvantage of local approximate linearization method, so this method is suitable for the large range change of operation point. Furthermore, it has better robustness to the system parameter perturbation and simple solution process. The eontrastive simulation is carried out on a real wind turbine with 300kW rated power and the resuh shows that this method can satisfy the control requirements and has better static and dynanfic performance and robustness.

关 键 词：非线性动态逆 内模控制 桨距角控制 风力发电 鲁棒控制 恒功率 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TM614[自动化与计算机技术—控制科学与工程]