VIBRATION CONTROL STRATEGIES FOR OFFSHORE WIND TURBINE WITH JACKET FOUNDATION UNDER EARTHQUAKE, WIND AND WAVE LOADS

Zhao Shengxiao; Liu Yingzhou; Shang Jin; Liu Qingquan; Wang Wenhua; Li Xin

doi:10.19912/j.0254-0096.tynxb.2022-0457

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (7) : 352-362. DOI: 10.19912/j.0254-0096.tynxb.2022-0457

VIBRATION CONTROL STRATEGIES FOR OFFSHORE WIND TURBINE WITH JACKET FOUNDATION UNDER EARTHQUAKE, WIND AND WAVE LOADS

Zhao Shengxiao^1,2, Liu Yingzhou³, Shang Jin^1,2, Liu Qingquan^1,2, Wang Wenhua³, Li Xin³

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Abstract

Due to the fact that some offshore wind farms in China are located in high intensity earthquake regions, they are facing the potential threat of earthquakes. Hence, the seismic module is developed and added to the simulation tool FAST v8 based on the derived fully coupled analysis method for offshore wind turbines （OWTs） under earthquakes, in order to establish the fully coupled seismic analysis model of OWTs. Based on the coupled seismic analysis model, the dynamic characteristics of OWT under earthquake, wind and wave loads are introduced, and the limitations of the mechanical control strategies on the reductions of seismic responses are proved. Then, the joint mechanical and multiple tuned mass damper （MTMD） vibration control strategy is suggested, and the influence of feather rate on the mitigation effects is investigated. Further, the applicability and effectiveness of the joint mechanical-MTMD control strategy is validated based on the reductions of OWT seismic responses.

Key words

offshore wind turbines / earthquakes / vibration control / coupled analysis / MTMD

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Zhao Shengxiao, Liu Yingzhou, Shang Jin, Liu Qingquan, Wang Wenhua, Li Xin. VIBRATION CONTROL STRATEGIES FOR OFFSHORE WIND TURBINE WITH JACKET FOUNDATION UNDER EARTHQUAKE, WIND AND WAVE LOADS[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 352-362 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0457

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