풍력에너지저널 (Journal of Wind Energy)

  • 제9권4호
  • /
  • Pages.57-64
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  • 2018
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  • 2093-5099(pISSN)
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  • 2733-9467(eISSN)
한국풍력에너지학회 (Korea Wind Energy Association)
권호 표지

부유식 해상풍력발전기 타워의 초기 형상에 따른 공진 해석

Resonance Analysis According to Initial Tower Design for Floating Offshore Wind Turbine

  • 김준배 (울산대학교, 조선해양공학부) ;
  • 신현경 (울산대학교, 조선해양공학부)
  • 투고 : 2018.12.18
  • 심사 : 2018.12.27
  • 발행 : 2018.12.31

⟨ 이전 논문 다음 논문 ⟩

초록

To maximize power generation and reduce the construction cost of a commercial utility-grade wind turbine, the size of the wind turbine should be large. The initial design of the 12 MW University of Ulsan(UOU) Floating Offshore Wind Turbine(FOWT) was carried out based on the 5 MW National Renewable Energy Laboratory(NREL) offshore wind turbine model. The existing 5 MW NREL offshore wind turbines have been expanded to 12 MW UOU FOWT using the geometric law of similarity and then redesigned for each factor. The resonance of the tower is the most important dynamic responses of a wind turbine, and it should be designed by avoiding resonance due to cyclic load during turbine operations. The natural frequency of the tower needs to avoid being within the frequency range corresponding to the rotational speed of the blades, 1P, and the blade passing frequency, 3P. To avoid resonance, vibration can be reduced by modifying the stiffness or mass. The direct expansion of the 5 MW wind turbine support structure caused a resonance problem with the tower of the 12 MW FOWT and the tower length and diameter was adjusted to avoid a match of the first natural frequency and 3P excitation of the tower.

키워드

과제정보

연구 과제 주관 기관 : 한국에너지기술평가원, 한국전력공사

참고문헌

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