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An experimental study on the aerodynamic-induced effects of a semi-submersible floating wind turbine

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  • Yang, Can
  • Xiao, Longfei
  • Deng, Shi
  • Chen, Peng
  • Liu, Lei
  • Cheng, Zhengshun

Abstract

Compared with land-based wind turbines, investigating the aerodynamic-induced effects of floating wind turbines (FWTs) is more challenging due to the aero-hydro-elastic-moor-control coupled characteristics. This study aims to examine the aerodynamic-induced effects of a newly designed 5 MW semi-submersible floating wind turbine through wave basin model tests, including the aerodynamic damping effect, the gyroscopic moment effect, and the nacelle-wind misalignment effect. The results indicate that an increase in wind speed leads to a decrease in platform surge-induced aerodynamic damping, while it results in an increase in platform pitch-induced aerodynamic damping. The presence of wind damps the wave-frequency tower vibration response and alters the tower's natural frequency. The spinning rotor and platform pitch motion are identified as two crucial factors contributing to the gyroscopic moment. Under rated conditions, the influence of the gyroscopic moment on the platform yaw motion is more significant than that of wave actions. The nacelle-wind misalignment leads to larger mean surge and pitch motions, as well as larger tower-base bending moments due to the increased aerodynamic loads on the rotor. Furthermore, the misalignment effect also impacts the discrepancy in the fairlead tensions of the mooring lines arranged in the upwind direction.

Suggested Citation

  • Yang, Can & Xiao, Longfei & Deng, Shi & Chen, Peng & Liu, Lei & Cheng, Zhengshun, 2024. "An experimental study on the aerodynamic-induced effects of a semi-submersible floating wind turbine," Renewable Energy, Elsevier, vol. 222(C).
    • Handle: RePEc:eee:renene:v:222:y:2024:i:c:s0960148123018451
    DOI: 10.1016/j.renene.2023.119930
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    References listed on IDEAS

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    1. Yang, Can & Cheng, Zhengshun & Xiao, Longfei & Tian, Xinliang & Liu, Mingyue & Wen, Binrong, 2022. "A gradient-descent-based method for design of performance-scaled rotor for floating wind turbine model testing in wave basins," Renewable Energy, Elsevier, vol. 187(C), pages 144-155.
    2. Farrugia, R. & Sant, T. & Micallef, D., 2016. "A study on the aerodynamics of a floating wind turbine rotor," Renewable Energy, Elsevier, vol. 86(C), pages 770-784.
    3. Cao, Qun & Xiao, Longfei & Guo, Xiaoxian & Liu, Mingyue, 2020. "Second-order responses of a conceptual semi-submersible 10 MW wind turbine using full quadratic transfer functions," Renewable Energy, Elsevier, vol. 153(C), pages 653-668.
    4. Wen, Binrong & Jiang, Zhihao & Li, Zhanwei & Peng, Zhike & Dong, Xingjian & Tian, Xinliang, 2022. "On the aerodynamic loading effect of a model Spar-type floating wind turbine: An experimental study," Renewable Energy, Elsevier, vol. 184(C), pages 306-319.
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