具有功率调节和容错能力的风力机自适应控制

水平轴风力机面对高风速变化工况时，极易出现转子灾难性失控超速运行，此时风能转换效率低于预期值，同时恶劣的环境也对桨距角控制提出了容错要求。针对这些问题，提出一种具有功率调节和容错能力的风力机自适应约束控制方案，通过自适应约束的桨距角控制实现安全可靠的功率调节，并集成容错能力以补偿可能的故障影响。介绍水平轴风力机的数学模型和运行要求，分析基准的非线性自适应约束控制方案的设计过程，并在此基础上讨论具有未知控制增益、任意初始条件和存在故障影响下的设计方案，最后搭建MATLAB仿真模型对所提出的方案进行验证。仿真实验结果表明：所提方案可以提高风力机的功率调节效率，同时在不同工况和不同故障条件下均能将转子速度和发电功率控制在安全范围内。

Adaptive Control of Wind Turbine with Power Regulation and Fault Tolerance

When the horizontal axis wind turbine is faced with high wind speed changing conditions,it is very easy for the rotor to run out of control and overspeed,at this time,the wind energy conversion efficiency is lower than the expected value.At the same time,the bad environment also puts forward fault tolerance requirements for the pitch angle control.To solve these problems,an adaptive constrained control scheme of wind turbine with power regulation and fault tolerance was proposed.It can realize safe and reliable power regulation through adaptive constrained pitch angle control,and it is integrated fault tolerance to compensate for possible fault effects.The mathematical model and operation requirements of the horizontal axis wind turbine were introduced.The design process of the benchmark nonlinear adaptive constraint control scheme was shown.On this basis,the design scheme with unknown control gain,arbitrary initial conditions and fault influence was discussed.Finally,a MATLAB simulation model was built to verify the proposed scheme.The simulation results show that the proposed scheme can improve the power regulation efficiency of the wind turbine,and control the rotor speed and power generation within a safe range under different working conditions or fault conditions.