%0 Journal Article
%T 风电机组偏航状态载荷控制<br>Load Control Under Yawed Condition for Wind Turbine
%A 廖明夫
%A 吕品
%A 康刘宏
%A 王巧艳
%J 机械科学与技术
%D 2018
%X 随着低风速风场的不断开发，低风速型风电机组面临叶轮尺寸不断增加和风况更加多变的情况。叶轮尺寸的不断增大带来了叶片柔性的增加，需要更加准确的仿真模型。而风况的多变导致机组长期处于偏航状态，进而导致叶片载荷波动的加剧，对机组寿命产生较大的影响。基于非线性耦合模型，提出了一种独立变桨载荷控制方法。非线性耦合模型采用了几何精确梁和自由涡尾迹方法，更适用于大尺寸叶轮的流固耦合效应的仿真。结果显示，提出的独立变桨控制方法不需要复杂的控制系统和额外的传感系统，即可以获得较好的降载效果。<br>With the development of low wind speed wind farm, the low wind speed horizontal-axis wind turbine(HAWT) is faced to the increasing large rotor and changeable wind condition. To improve the cost effectiveness of energy, weight-reduction techniques are widely used for large scaled blade. This results in lighter and more flexible rotor blades. It makes sense to develop a more accurate fluid solid interaction (FSI) model. The changeable wind condition leads to longer operation under yawed condition. In this study, a load control strategy is introduced by applying a nonlinear FSI model. The nonlinear FSI model has been developed by coupling a geometrically exact beam (GEB) with a free-vortex wake (FVW) model. The results demonstrate that this load control strategy can decrease the load fluctuation efficiently without a complex control system and additional sensors
%K 风力发电
%K 非线性流固耦合模型
%K 几何精确梁
%K 自由涡尾迹
%K 偏航状态
%K 载荷控制&lt
%K br&gt
%K wind energy
%K nonlinear aeroelastic
%K geometrically nonlinear effect
%K free vortex wake
%K yawing condition
%K load control
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6956.shtml