PLATFORM DYNAMIC RESPONSE AND MOORING FATIGUE ANALYSIS OF MULTI-SEGMENT MOORIONG FLOATING WIND TURBINES

Zhao Fengyu; Sun Hongyue; Ding Weiye; Ai Congfang

doi:10.19912/j.0254-0096.tynxb.2024-1768

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (2) : 478-485. DOI: 10.19912/j.0254-0096.tynxb.2024-1768

PLATFORM DYNAMIC RESPONSE AND MOORING FATIGUE ANALYSIS OF MULTI-SEGMENT MOORIONG FLOATING WIND TURBINES

Zhao Fengyu¹, Sun Hongyue¹, Ding Weiye¹, Ai Congfang²

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Abstract

In recent years, with the widespread application of semi-submersible platforms in offshore engineering, there have been numerous innovations in the mooring systems. Among these, the multi-segmented mooring system has demonstrated good effectiveness in reducing platform dynamic responses. To improve the stability and safety of the OC4 offshore wind turbine under the combined action of wind, waves, and currents, a mooring system combining the multi-segmented mooring with the original OC4 platform mooring system was established, with different configurations of weights and buoys. Using the FAST to AQWA （F2A） to investigate the motion response of the OC4 wind turbine platform with four different mooring systems, and the fatigue damage of the mooring system was analyzed based on T-N curves. The results show that compared to the original mooring system, the clump weight mooring system has better suppression of the motion response and low-frequency resonance response of the floating wind turbine platform, but it slightly increases the wave-frequency resonance response; The buoy mooring system can significantly reduce mooring tension and the multi-segmented mooring system demonstrates good fatigue resistance. The numerical simulation results of the multi-segmented mooring system provide scientific reference for the development of mooring systems for floating offshore wind turbines.

Key words

floating offshore wind turbines / dynamic responses / mooring / F2A / mooring fatigue analysis

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Zhao Fengyu, Sun Hongyue, Ding Weiye, Ai Congfang. PLATFORM DYNAMIC RESPONSE AND MOORING FATIGUE ANALYSIS OF MULTI-SEGMENT MOORIONG FLOATING WIND TURBINES[J]. Acta Energiae Solaris Sinica. 2026, 47(2): 478-485 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1768

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