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Model test research of a semisubmersible floating wind turbine with an improved deficient thrust force correction approach

Lookup NU author(s): Professor Zhiqiang Hu

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Abstract

This paper investigates the model test research of a semisubmersible floating wind turbine. An improvedmethod is proposed to correct the deficient thrust force in a Froude-scale experimental condition, whichis able to simulate the rotor operational state more realistically by allowing the rotor to rotate freely withthe wind. This approach also maintains tip speed ratio to some extent and overcomes previouslyreported negative effects produced by common correction ways. Reduced platform resonant motions inthe presence of wind force are observed. Due to rotor rotation, resonant yaw and roll motions areinduced even in heading wind and wave state. Tower vibration is found to be suppressed by the windforce. Multi-frequencies components are observed in the response of tower-top shear force, which isgoverned by the couplings of hydrodynamic loads, aerodynamic loads and tower vibration. It is alsofound that the dynamic response of the mooring line is mainly dominated by wave load and aerodynamiceffect can be simplified as an extra constant force.

Publication metadata

Author(s): Li L, Gao Y, Hu Z, Yuan Z, Day S, Li H

Publication type: Article

Publication status: Published

Journal: Renewable Energy

Year: 2018

Volume: 119

Pages: 95-105

Print publication date: 01/04/2018

Online publication date: 05/12/2017

Acceptance date: 04/12/2017

Date deposited: 08/12/2017

ISSN (print): 0960-1481

ISSN (electronic): 1879-0682

Publisher: Elsevier

URL: https://doi.org/10.1016/j.renene.2017.12.019

DOI: 10.1016/j.renene.2017.12.019

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