基于载荷抑制的大型风机独立变桨距控制的研究

采用泛模型的方法结合实际的相关参数对风机进行分析，同时利用GHbladed内部风机运行参数的在线识别和处理能力进而采取自适应的控制策略来实现独立变桨距控制。采用该方法的目的是减小风机的波动载荷，以典型的桨叶挥舞力与桨叶根部弯矩为例，通过GHbladed软件进行的仿真曲线可以明显看出，相对于统一变桨距，采用该方法，典型的载荷波动明显减小，从而提高了风机的运行安全。

Study on Individual Pitch Control of Large Wind Turbines Based on Load Mitigation

Pan-model which combined with actual parameters was employed to analyze wind turbine, inclu- ding taking advantage of online identification and processing capabilities of GH bladed wind turbine operatingparameters and the adaptive control strategy to achieve independent variable pitch control. The purpose of u- sing this method is to reduce turbine＇ s fluctuating load. Taking typical flapping forces and blade root bending moment for example, the GH bladed simulation curve shows that with respect to the uniform variable pitch, this approach can significantly reduce typical load fluctuation to improve the operating safety of wind turbine.