DYNAMIC RESPONSE ANALYSIS OF AN ULTRA-LARGE SEMI-SUBMERSIBLE FLOATING WIND TURBINE UNDER SECOND-ORDER WAVE FORCES

被引：0

作者：

Zhao Z. ^{[1
,2
]}

Shi W. ^{[2
,3
]}

Wang W. ^{[1
,2
]}

Li X. ^{[1
,2
]}

机构：

[1] School of Hydraulic Engineering, Dalian University of Technology, Dalian

[2] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian

[3] Deepwater Engineering Research Center, Dalian University of Technology, Dalian

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 01期

关键词：

dynamic response; fatigue analysis; hydrodynamics; offshore wind power; semi-submersible floating wind turbine; time domain fully coupled analysis;

D O I：

10.19912/j.0254-0096.tynxb.2021-0992

中图分类号：

学科分类号：

摘要：

For DTU（Technical University of Denmark，DTU）10 MW wind turbines，the fully coupled analysis for the semi-submersible floating offshore wind turbine （FOWT） system was conducted by using FAST software under the typical sea states with different hydrodynamic components to compare and analyze the effect of second-order difference- and sum-frequency wave forces on the dynamic responses of the ultra-large semi-submersible FOWT，including only first-order wave force，first- and second-order difference-frequency wave forces calculated by Newman’s approximation and full-field quadratic transfer functions（QTFs），respectively，first- and second-order sum-frequency wave forces calculated by full-field QTFs，and first- and complete second-order wave forces calculated by full-field QTFs. Based on the fatigue calculation theory of the wind turbine structure，the effect of second-order difference- and sum-frequency wave forces on the fatigue failure of the wind turbine structure is analyzed. The study found that under extreme sea states，second-order difference-frequency wave force has a significant effect on the platform motions，and the second-order difference- and sum-frequency wave forces has a significant effect on the structural loads and fatigue failure of the semi-submersible FOWT. In addition，the Newman’s approximation method obviously underestimates the effect of second- order difference- frequency wave forces on the dynamic response of the semisubmersible FOWT. © 2023 Science Press. All rights reserved.

引用

页码：335 / 345

页数：10

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