Ocean Systems Engineering

  • 제3권4호
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  • Pages.295-307
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  • 2013
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
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Influence of failed blade-pitch-control system to FOWT by aero-elastic-control-floater-mooring coupled dynamic analysis

  • Bae, Yoon Hyeok (Department of Civil Engineering, Texas A&M University, College Station) ;
  • Kim, Moo-Hyun (Department of Civil Engineering, Texas A&M University, College Station)
  • 투고 : 2013.06.11
  • 심사 : 2013.11.30
  • 발행 : 2013.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

More FOWTs (floating offshore wind turbines) will be installed as relevant regulations and technological hurdles are removed in the coming years. In the present study, a numerical prediction tool has been developed for the fully coupled dynamic analysis of FOWTs in time domain including aero-loading, tower elasticity, blade-rotor dynamics and control, mooring dynamics, and platform motions so that the influence of rotor-control dynamics on the hull-mooring performance and vice versa can be assessed. The developed coupled analysis program is applied to Hywind spar design with 5 MW turbine. In case of spar-type floaters, the control strategy significantly influences the hull and mooring dynamics. If one of the control systems fails, the entire dynamic responses of FOWT can be significantly different. Therefore, it is important to maintain various control systems in a good operational condition. In this regard, the effects of failed blade pitch control system on FOWT performance including structural and dynamic responses of blades, tower, and floater are systematically investigated. Through this study, it is seen that the failure of one of the blade pitch control system can induce significant dynamic loadings on the other blades and the entire FOWT system. The developed technology and numerical tool are readily applicable to any types of floating wind farms in any combinations of irregular waves, dynamic winds, and steady currents.

키워드

참고문헌

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피인용 문헌

  1. Layout optimization for multi-platform offshore wind farm composed of spar-type floating wind turbines vol.20, pp.6, 2015, https://doi.org/10.12989/was.2015.20.6.751
  2. Tension variations of hydro-pneumatic riser tensioner and implications for dry-tree interface in semisubmersible vol.7, pp.1, 2017, https://doi.org/10.12989/ose.2017.7.1.021
  3. Suppression of tension variations in hydro-pneumatic riser tensioner by using force compensation control vol.7, pp.3, 2013, https://doi.org/10.12989/ose.2017.7.3.225
  4. Structural health monitoring of towers and blades for floating offshore wind turbines using operational modal analysis and modal properties with numerical-sensor signals vol.188, pp.None, 2013, https://doi.org/10.1016/j.oceaneng.2019.106226
  5. Numerical and Experimental Analyses on Motion Responses on Heaving Point Absorbers Connected to Large Semi-Submersibles vol.9, pp.8, 2013, https://doi.org/10.3390/pr9081363