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

Liang Li, Yan Gao, Zhiqiang Hu, Zhiming Yuan, Sandy Day, Haoran Li

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper investigates the model test research of a semisubmersible floating wind turbine. An improved method is proposed to correct the deficient thrust force in a Froude-scale experimental condition, which is able to simulate the rotor operational state more realistically by allowing the rotor to rotate freely with the wind. This approach also maintains tip speed ratio to some extent and overcomes previously reported negative effects produced by common correction ways. Reduced platform resonant motions in the presence of wind force are observed. Due to rotor rotation, resonant yaw and roll motions are induced even in heading wind and wave state. Tower vibration is found to be suppressed by the wind force. Multi-frequencies components are observed in the response of tower-top shear force, which is governed by the couplings of hydrodynamic loads, aerodynamic loads and tower vibration. It is also found that the dynamic response of the mooring line is mainly dominated by wave load and aerodynamic effect can be simplified as an extra constant force.
LanguageEnglish
Pages95-105
Number of pages11
JournalRenewable Energy
Volume119
Early online date5 Dec 2017
DOIs
Publication statusPublished - 30 Apr 2018

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Wind turbines
Towers
Rotors
Aerodynamic loads
Mooring
Dynamic response
Loads (forces)
Aerodynamics
Hydrodynamics

Keywords

  • floating wind turbine
  • model test
  • thrust force correction approach
  • renewable energy
  • hydrodynamic load
  • aerodynamic load

Cite this

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title = "Model test research of a semisubmersible floating wind turbine with an improved deficient thrust force correction approach",
abstract = "This paper investigates the model test research of a semisubmersible floating wind turbine. An improved method is proposed to correct the deficient thrust force in a Froude-scale experimental condition, which is able to simulate the rotor operational state more realistically by allowing the rotor to rotate freely with the wind. This approach also maintains tip speed ratio to some extent and overcomes previously reported negative effects produced by common correction ways. Reduced platform resonant motions in the presence of wind force are observed. Due to rotor rotation, resonant yaw and roll motions are induced even in heading wind and wave state. Tower vibration is found to be suppressed by the wind force. Multi-frequencies components are observed in the response of tower-top shear force, which is governed by the couplings of hydrodynamic loads, aerodynamic loads and tower vibration. It is also found that the dynamic response of the mooring line is mainly dominated by wave load and aerodynamic effect can be simplified as an extra constant force.",
keywords = "floating wind turbine, model test, thrust force correction approach, renewable energy, hydrodynamic load, aerodynamic load",
author = "Liang Li and Yan Gao and Zhiqiang Hu and Zhiming Yuan and Sandy Day and Haoran Li",
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AU - Li, Liang

AU - Gao, Yan

AU - Hu, Zhiqiang

AU - Yuan, Zhiming

AU - Day, Sandy

AU - Li, Haoran

PY - 2018/4/30

Y1 - 2018/4/30

N2 - This paper investigates the model test research of a semisubmersible floating wind turbine. An improved method is proposed to correct the deficient thrust force in a Froude-scale experimental condition, which is able to simulate the rotor operational state more realistically by allowing the rotor to rotate freely with the wind. This approach also maintains tip speed ratio to some extent and overcomes previously reported negative effects produced by common correction ways. Reduced platform resonant motions in the presence of wind force are observed. Due to rotor rotation, resonant yaw and roll motions are induced even in heading wind and wave state. Tower vibration is found to be suppressed by the wind force. Multi-frequencies components are observed in the response of tower-top shear force, which is governed by the couplings of hydrodynamic loads, aerodynamic loads and tower vibration. It is also found that the dynamic response of the mooring line is mainly dominated by wave load and aerodynamic effect can be simplified as an extra constant force.

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

KW - floating wind turbine

KW - model test

KW - thrust force correction approach

KW - renewable energy

KW - hydrodynamic load

KW - aerodynamic load

UR - https://www.sciencedirect.com/science/journal/09601481

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