| 超大型和大型半潜浮式海上风力机动力响应对比 |
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| 引用本文： | 赵志新,李昕,王文华,施伟.超大型和大型半潜浮式海上风力机动力响应对比[J].海洋工程,2020,38(2):101-110. |
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| 作者姓名： | 赵志新 李昕 王文华 施伟 |
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| 作者单位： | 大连理工大学 水利工程学院, 辽宁 大连 116024;大连理工大学 海岸与近海工程国家重点实验室, 辽宁 大连 116024,大连理工大学 水利工程学院, 辽宁 大连 116024;大连理工大学 海岸与近海工程国家重点实验室, 辽宁 大连 116024,大连理工大学 水利工程学院, 辽宁 大连 116024;大连理工大学 海岸与近海工程国家重点实验室, 辽宁 大连 116024,大连理工大学 水利工程学院, 辽宁 大连 116024;大连理工大学 海岸与近海工程国家重点实验室, 辽宁 大连 116024;大连理工大学 深海工程研究中心, 辽宁 大连 116024 |
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| 基金项目： | 国家自然科学基金面上项目（51879040）；国家自然科学基金青年基金项目（51709039） |
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| 摘 要： | 以超大型风力机(DTU 10 MW)为研究对象,对现有的大型(NREL 5 MW)无撑杆半潜浮式风力机支撑平台进行放大设计,用于支撑超大型风力机,基于气动-水动-伺服-弹性全耦合计算模型,根据设定的典型工况,使用FAST软件对超大型和大型无撑杆的半潜浮式风力机系统进行时域耦合分析,并依据计算结果对超大型和大型浮式风力机系统的运动响应和结构动力反应等特性进行对比分析。研究发现:半潜浮式风力机大型化后,气动荷载效应对风力机系统的激励作用更为突出,使得浮式平台运动由风荷载激励的低频共振反应比例增大,波频运动比例减小,这也导致由浮式平台低频运动激励的锚链张力反应增大。此外,高倍的飞轮转动频率对大型半潜浮式风力机叶片、塔架结构的激励作用较超大型半潜浮式风力机更为显著。
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| 关 键 词： | 半潜浮式风力机 全耦合模型 动力响应 功率谱 |
| 收稿时间： | 2019/5/19 0:00:00 |
Comparison of dynamic response between ultra-large and large semi-submersible floating wind turbines |
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| ZHAO Zhixin,LI Xin,WANG Wenhua and SHI Wei.Comparison of dynamic response between ultra-large and large semi-submersible floating wind turbines[J].Ocean Engineering,2020,38(2):101-110. |
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| Authors: | ZHAO Zhixin LI Xin WANG Wenhua and SHI Wei |
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| Institution: | School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China,School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China,School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China and School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;Deepwater Engineering Research Center, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | Taking the ultra-large wind turbine (DTU 10 MW) as the research object, the existing braceless semi-submersible platform for the large wind turbine (NREL 5 MW) is enlarged to support the ultra-large wind turbine. Based on the aero-hydro-servo-elastic fully coupled calculation model, the time-domain coupled analysis of the large and ultra-large braceless semi-submersible floating wind turbines is conducted for the typical load cases. Furthermore, the comparative analysis of the dynamic response characteristics of the large and ultra-large wind turbines is carried out according to the time-domain coupled calculation results. The research shows that the aerodynamic loads effect is more prominent on the excitation of the wind turbine system with the upscaling of wind turbines, which makes the low-frequency resonant response ratio of the platform motions increased by the wind loads excitation, and the proportion of the wave-frequency motion response decreases. This also leads to the increase of the mooring line tension response excited by the low-frequency resonant response of the platform motions. In addition, the high magnification of rotor rotation frequency has a significant incentive effect on the blades and tower of the large braceless semi-submersible floating wind turbine. |
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| Keywords: | semi-submersible floating wind turbine full coupling model dynamic response power spectrum |
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