基于风电机组LPV模型参考自适应独立变桨控制

为了减少大型风电机组多输入、多输出的非线性耦合影响和独立变桨带来的附加控制载荷，根据线性参数变化理论（LPV）对风电机组风能转换系统进行局部线性化，建立统一化的风电机组独立变桨线性参数变化LPV模型.利用模型参考自适应控制理论（MRAC），以线性化后的LPV控制系统为被控对象建立参考模型，设计出高性能的独立变桨距自适应控制系统.采取波波夫（Popov）超稳定性分析法给出风电机组LPV模型参考自适应控制律，并对所设计的LPV模型参考自适应独立变桨距系统进行计算机仿真实验.实验结果表明，所设计的基于LPV模型参考自适应系统能够适应机组参数在较大范围内的变化，能够实现风电机组独立变桨系统的整机控制，具有良好的稳定性和快速性.

Reference adaptative control of individual variable propeller pitch based on LPV model for wind turbine

In order to reduce the multi input and multi output nonlinear coupling influence of large scale wind turbine as well as the additional control load brought by individual variable propeller pitch, the local linearization for the wind energy conversion system of wind turbine was carried out according to linear parameter variation （LPV） theory. A unified LPV model for individual variable propeller pitch of wind turbine was established. With utilizing the model reference adaptive control （MRAC） theory and taking the linearized LPV control system as the controlled object, the reference model was established, and an adaptive control system with high performance for individual variable propeller pitch was designed. The Popov ultra stability analysis method was adopted to obtain the LPV MRAC law for wind turbine. In addition, the computer simulation experiment was performed for the designed individual variable propeller pitch system based on LPV MRAC. The experimental results show that the designed system based on LPV MRAC can adapt to turbine parameter variation in a wide range, realize the complete control for individual variable propeller pitch system of wind turbine, and exhibit good stability and rapidity.