Smart Structures and Systems

  • 제18권4호
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  • Pages.683-705
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  • 2016
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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Semi-active control of vibrations of spar type floating offshore wind turbines

  • Van-Nguyen, Dinh (Software Division, Wood Group Kenny, Galway Technology Park) ;
  • Basu, Biswajit (Department of Civil, Structural and Environmental Engineering, Trinity College Dublin) ;
  • Nagarajaiah, Satish (Departments of Civil and Environmental Engineering and Mechanical Engineering, Rice University)
  • 투고 : 2015.03.07
  • 심사 : 2016.03.28
  • 발행 : 2016.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

A semi-active algorithm for edgewise vibration control of the spar-type floating offshore wind turbine (SFOWT) blades, nacelle and spar platform is developed in this paper. A tuned mass damper (TMD) is placed in each blade, in the nacelle and on the spar to control the vibrations for these components. A Short Time Fourier Transform algorithm is used for semi-active control of the TMDs. The mathematical formulation of the integrated SFOWT-TMDs system is derived by using Euler-Lagrangian equations. The theoretical model derived is a time-varying system considering the aerodynamic properties of the blade, variable mass and stiffness per unit length, gravity, the interactions among the blades, nacelle, spar, mooring system and the TMDs, the hydrodynamic effects, the restoring moment and the buoyancy force. The aerodynamic loads on the nacelle and the spar due to their coupling with the blades are also considered. The effectiveness of the semi-active TMDs is investigated in the numerical examples where the mooring cable tension, rotor speed and the blade stiffness are varying over time. Except for excessively large strokes of the nacelle TMD, the semi-active algorithm is considerably more effective than the passive one in all cases and its effectiveness is restricted by the low-frequency nature of the nacelle and the spar responses.

키워드

과제정보

연구 과제 주관 기관 : SYSWIND

참고문헌

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  3. Mitigation of offshore wind turbine responses under wind and wave loading: Considering soil effects and damage 2017, https://doi.org/10.1002/stc.2117
  4. Vibration control in wind turbines to achieve desired system-level performance under single and multiple hazard loadings pp.15452255, 2018, https://doi.org/10.1002/stc.2261
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  6. Wave-current interaction effects on structural responses of floating offshore wind turbines vol.22, pp.2, 2018, https://doi.org/10.1002/we.2288
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  10. Using active tuned mass dampers with constrained stroke to simultaneously control vibrations in wind turbine blades and tower vol.22, pp.7, 2016, https://doi.org/10.1177/1369433218817892
  11. Control Strategies for Floating Offshore Wind Turbine: Challenges and Trends vol.8, pp.10, 2016, https://doi.org/10.3390/electronics8101185
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  14. Comparison of semi-active and passive tuned mass damper systems for vibration control of a wind turbine vol.30, pp.6, 2016, https://doi.org/10.12989/was.2020.30.6.663
  15. Hybrid vibration control of offshore wind turbines under multiple external excitations vol.12, pp.4, 2016, https://doi.org/10.1063/5.0003394
  16. Study on a 3D pounding pendulum TMD for mitigating bi-directional vibration of offshore wind turbines vol.241, pp.None, 2021, https://doi.org/10.1016/j.engstruct.2021.112383
  17. Vibration control of offshore wind turbine under multiple hazards using single variable-stiffness tuned mass damper vol.236, pp.None, 2021, https://doi.org/10.1016/j.oceaneng.2021.109473
  18. Conceptual design and dynamic analysis of a novel passive floating offshore wind turbine structure vol.16, pp.10, 2016, https://doi.org/10.1080/17445302.2020.1791684