Experimental study on dynamic responses of a spar-type floating offshore wind turbine

Jianbing Chen, Zenghui Liu, Yupeng Song, Yongbo Peng and Jie Li

Renewable Energy, 2022, vol. 196, issue C, 560-578

Abstract: In this paper, a scaled model experiment of a spar-type floating offshore wind turbine (FOWT) is carried out. The scaled wind turbine model is designed based on the OC3-Hywind FOWT, and the pitch control mechanism is considered. An optimal arrangement scheme of anemometers deployment on a disc plane is proposed to improve the efficiency of wind field measurement. Three categories of load case tests corresponding to the wind-only, wave-only as well as wind-wave concurrent loads are carried out. The rigid-body motion of the FOWT model and the deformation of the tower as well as the mooring tension are captured. It is revealed that the yaw is greatly affected by the rotor, and the trend and amplitude of the structural rigid-body motion are dominated by aerodynamic loads and hydrodynamic loads, respectively. Moreover, the coupling effects of multi-degree-of-freedom (MDOF) rigid-body motions of the structure are quite obvious. As for the flexible tower, although its deformation is quite small, the resonant response caused by doubling frequency coupling effects is significant. Besides, large amplitude of stress can be induced in the flexible tower under wave-contained conditions. The present experiment provides a benchmark for the validation of numerical simulation tools of FOWTs.

Keywords: Floating offshore wind turbine; Model test; Dynamic response; Wind field measurement; Elastic deformation; Wind-wave concurrent loads; Scaled FOWT model experiment (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:196:y:2022:i:c:p:560-578

DOI: 10.1016/j.renene.2022.06.149

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