摘要
阵风作用会导致叶根、轮毂等风机重要部件的载荷突变。为寻找较有效缓解策略,利用激光雷达可提前测量风轮处风速的特性,获得风速的超前信息。研究了阵风识别算法,设计了变桨前馈控制算法。并对算法进行Bladed仿真,仿真结果表明该策略对阵风工况的载荷缓解效果明显。结果表明,在阵风工况下,整套方法能够有效减小风机重要部件的载荷,并有效降低风机发生超速、过功率重大故障的风险。
Load mutation will be imposed by gust on the blade root and the hub and other main parts of wind turbine.In order to find a more effective mitigation strategy,laser radar could be used to measure in advance the characteristics of wind speed in wind turbine and thus the advance information of wind speed can be obtained.The gust recognition algorithm was studied and simulated by Bladed,and the feed forward control was designed.The simulation results showed that the strategy had a significant effect on reducing load.It also showed that the whole methods could effectively cut down the load of the important parts of the wind turbine,and effectively reduce the risk of over speed and over power failure.
出处
《机械与电子》
2016年第11期69-73,共5页
Machinery & Electronics
