陆海风力机动态响应对比

Comparison of Dynamic Response Between Stationary and Floating Wind Turbines

以NREL实测数据为湍流风场数据源,以NREL 5 MW风力机为样机,并结合波浪作用,分别研究了陆海风力机平台及各柔性部件的动力学响应.结果表明:平台运动形式主要为纵荡、纵摇和首摇;漂浮式风力机的叶根摆振力矩和纵向剪力要大于陆上风力机;漂浮式风力机塔尖和塔基纵向剪力及塔基俯仰力矩的波动范围为陆上风力机的3倍;漂浮式风力机塔尖运动加速度呈现高频和大跨度的特点.

Considering wave loads, the dynamic responses of stationary and floating wind turbine platforms and relevant flexible components were studied by taking the measured data of NREL as the source of tur- bulent wind field and the NREL 5 MW wind turbine as a prototype. Results show that the movements of above platforms are mainly in surge, pitch and yaw directions; the in-plane moment and out-of-plane force at blade root of floating wind turbines are bigger than that of stationary wind turbines~ for floating wind turbines, the shear force in surge direction of tower top and tower base and the pitching moment of tower base are three times as much as that of stationary wind turbines;the acceleration at tower top of floating wind turbines presents the characteristics of high frequency and large span.