STUDY OF DYNAMIC BEHAVIOR OF BARGE-TYPE WIND-WAVE INTEGRATED FLOATING ENERGY SYSTEM

Zhang Xianfeng; Ma Lu; Ding Jieyi; Qin Ming; Lei Xiao; Yang Yang

doi:10.19912/j.0254-0096.tynxb.2024-114

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (11) : 614-622. DOI: 10.19912/j.0254-0096.tynxb.2024-114

STUDY OF DYNAMIC BEHAVIOR OF BARGE-TYPE WIND-WAVE INTEGRATED FLOATING ENERGY SYSTEM

Zhang Xianfeng¹, Ma Lu¹, Ding Jieyi², Qin Ming¹, Lei Xiao¹, Yang Yang²

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Abstract

In order to investigate the dynamic responses of the IFES model under different wind-wave combined loads, the NREL 5 MW wind turbine, the ITI Energy barge-type platform and several Wavestar prototype WECs are employed for the case study. A coupled analysis tool is developed to examine the aero-hydro-servo-elastic coupled dynamic behavior of the hybrid system under wind and wave loadings. The platform motions and power characteristics of the IFES model are obtained and compared to that of the FOWT. The results indicated that the time-varying platform motions of the examined IFES models are significantly mitigated by the integration of WECs under all examined conditions. The platform roll and pitch is respectively decreased by 67.45% and 47.02% at wind speed of 12 m/s. Additionally, the output power of the IFES model is also increased by 1.89% under the rated wind speed of the wind turbine. The tower-base bending moment in rolling and pitching are also not negatively influenced to increase as well as fairlead tension of each mooring line. The obtained results have confirmed that the combination of WECs is not just beneficial in improving platform motion stability of the hybrid system, but also positively enhancing the renewable energy utilization efficiency.

Key words

offshore wind turbines / offshore wind energy / wave energy / integrated system / dynamic response / coupling effect

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Zhang Xianfeng, Ma Lu, Ding Jieyi, Qin Ming, Lei Xiao, Yang Yang. STUDY OF DYNAMIC BEHAVIOR OF BARGE-TYPE WIND-WAVE INTEGRATED FLOATING ENERGY SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(11): 614-622 https://doi.org/10.19912/j.0254-0096.tynxb.2024-114

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