Study on the Coupled Dynamic Responses of a Submerged Floating Wind Turbine under Different Mooring Conditions
Study on the Coupled Dynamic Responses of a Submerged Floating Wind Turbine under Different Mooring Conditions
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DOI：
10.3390/en12030418
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发表时间：
2019-01
期刊：
影响因子：
3.2
通讯作者：
Conghuan Le;Yan'e Li;H. Ding
中科院分区：
文献类型：
--
作者：
Conghuan Le;Yan'e Li;H. Ding
提出了一种适用于中等水深（50-200 m）的水下漂浮式海上风力涡轮机（SFOWT）。采用气液伺服弹性系泊耦合动力学分析方法，研究了不同系泊条件下的SFOWT在紊流风和不规则波联合作用下的耦合动力响应。研究了系绳长度、预张力和系绳失效等参数对超声波行波管性能的影响。结果表明，系绳长度对纵荡、垂荡、纵摇和偏航运动响应有显著影响，但对塔架的纵向位移和系绳张力影响不大。预张力的增加会导致纵荡、垂荡和横摇的固有频率显著增加。通过与完整系泊系统的响应进行比较，研究了系绳失效对SFOWT性能的影响。结果表明，系绳断裂后的超声波行波管在工作状态下仍具有良好的性能。
A submerged floating offshore wind turbine (SFOWT) is proposed for intermediate water depth (50–200 m). An aero-hydro-servo-elastic-mooring coupled dynamic analysis was carried out to investigate the coupled dynamic response of the SFOWT under different mooring conditions subjected to combined turbulent wind and irregular wave environments. The effects of different parameters, namely, the tether length, pretension and the tether failure, on the performance of SFOWT were investigated. It is found that the tether length has significant effects on the motion responses of the surge, heave, pitch and yaw but has little effects on the tower fore-aft displacements and the tether tensions. The increased pretension can result in the increase of the natural frequencies of surge, heave and yaw significantly. The influence of tether failure on the SFOWT performance was investigated by comparing the responses with those of the intact mooring system. The results show that the SFOWT with a broken tether still has a good performance in the operational condition.