三种漂浮式风力机柔性部件的动力学响应对比

Comparsion of dynamic response of flexible components for three kinds of floating wind turbine

柔性部件作为漂浮式风力机的重要组成部分,对其整机安全性有极大影响。为研究漂浮式风力机柔性部件在风浪流联合作用下的动态响应,本文基于模态截断法与多体动力学相结合的计算方法,采用水动-气动-弹性-伺服全耦合软件FAST软件,选取3种具有代表性的漂浮式风力机作为研究对象,研究其动态响应并对比分析。结果表明:在风浪流作用下,3种漂浮式风力机叶尖挥舞位移都较大,叶尖摆振位移较小;Spar和Barge的塔尖摆振位移变化相近,TLP的塔尖摆振位移变化较大;3种漂浮式风力机的叶根载荷均值大小相近,但Barge的叶根挥舞弯矩变化较大;Spar和TLP的发电机功率较为稳定,维持在5MW左右,Barge的发电机功率略小,且波动略大。

As an important part of floating wind turbine, the flexible components have great impact on its overall security. In order to study the dynamic response of flexible components under wind and waves, based on the calculation method which combines modal truncation method with muhi - body dynamics, the paper used hydrodyn - aerodyn - elastodyn - servodyn fully coupled FAST software an selected three representative floating wind machine as the research object to study its dynamic response. The results show that in the role of waves flow, the displacement of blade tip waving of three floating wind turbine is lar- ger, the displacement of blade tip shimmy is smaller ; the displacement of spire shimmy of Spar and Barge is similar, the displacement of TLP spire shimmy varies more greatly; the mean value of root loads of three floating wind turbine is similar, but the root waving moment of Barge changes greatly ; the generator power of Spar and TLP is more stable and keeps around 5MW. The generator power of Barge is smaller and fluctuates largely.