Dynamic Response of Articulated Offshore Wind Turbines under Different Water Depths
Dynamic Response of Articulated Offshore Wind Turbines under Different Water Depths
复制标题
不同水深下铰接式海上风力发电机的动态响应
DOI：
10.3390/en13112784
复制
发表时间：
2020-06
期刊：
影响因子：
3.2
通讯作者：
Yougang Tang
中科院分区：
文献类型：
--
作者：
Pei Zhang;Shugeng Yang;Yan Li;Jiayang Gu;Zhiqiang Hu;Ruoyu Zhang;Yougang Tang
针对NREL5 MW海上风电机组的过渡水深为50m~75m的海域，提出了铰接式基础形式。为了研究不同水深下的动力特性，采用了三种铰接式基础，并在时间域内进行了数值模拟。选用内部程序对铰接式海上风力机的动态响应进行了模拟。根据叶片单元动量理论和经验公式分别计算了旋转叶片上的气动载荷和塔架上的风压载荷。水动力荷载采用三维势流理论进行模拟。在不同的情况下，记录和比较了基础的运动、风力机的气动性能以及铰接处的载荷。仿真结果表明，三台铰接式海上风力机均具有良好的动态性能，完全满足额定运行条件下的发电要求。此外，比较是基于这些反应的时程和谱。结果表明，与其他设计方案相比，较浅方案的动力响应更加剧烈。
Focusing on the transitional depth offshore area from 50 m to 75 m, types of articulated foundations are proposed for supporting the NREL 5 MW offshore wind turbine. To investigate the dynamic behaviors under various water depths, three articulated foundations were adopted and numerical simulations were conducted in the time domain. An in-house code was chosen to simulate the dynamic response of the articulated offshore wind turbine. The aerodynamic load on rotating blades and the wind pressure load on tower are calculated based on the blade element momentum theory and the empirical formula, respectively. The hydrodynamic load is simulated by 3D potential flow theory. The motions of foundation, the aerodynamic performance of the wind turbine, and the loads on the articulated joint are documented and compared in different cases. According to the simulation, all three articulated offshore wind turbines show great dynamic performance and totally meet the requirement of power generation under the rated operational condition. Moreover, the comparison is based on time histories and spectra among these responses. The result shows that dynamic responses of the shallower one oscillate more severely compared to the other designs.
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DOI：
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发表时间：
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期刊：
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