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Experimental study of the functionality of a semisubmersible wind turbine combined with flap-type Wave Energy Converters

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  • Michailides, Constantine
  • Gao, Zhen
  • Moan, Torgeir

Abstract

In the present paper the functionality of the Semisubmersible wind energy and Flap-type wave energy Converter (SFC) is examined experimentally. In order to study the functionality of the SFC, the focus is on operational environmental conditions. SFC is a combined concept that utilizes offshore wind energy and ocean wave energy for power production. Details are presented as far as the physical modelling of the wind turbine with the use of a redesigned small-scale rotor and of the Power Take-Off mechanism of the Wave Energy Converters (WECs) with the use of a configuration that is based on a mechanical rotary damper. Tests with quasi-static excitation, motion decay, regular and irregular waves without and with wind that is uniform are conducted on an 1:50 scale physical model. The experimental data are compared with numerical predictions obtained by a fully coupled numerical model using Simo/Riflex tool. A good agreement is observed between experimental and numerical predictions. The combined operation of WECs doesn't affect the tension of mooring lines nor the acceleration of nacelle and the bending moment in tower's base. The produced power of the WECs of the SFC and consequently the functionality of the SFC is estimated.

Suggested Citation

  • Michailides, Constantine & Gao, Zhen & Moan, Torgeir, 2016. "Experimental study of the functionality of a semisubmersible wind turbine combined with flap-type Wave Energy Converters," Renewable Energy, Elsevier, vol. 93(C), pages 675-690.
    • Handle: RePEc:eee:renene:v:93:y:2016:i:c:p:675-690
    DOI: 10.1016/j.renene.2016.03.024
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    References listed on IDEAS

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    1. Martinelli, Luca & Zanuttigh, Barbara & Kofoed, Jens Peter, 2011. "Selection of design power of wave energy converters based on wave basin experiments," Renewable Energy, Elsevier, vol. 36(11), pages 3124-3132.
    2. Muliawan, Made Jaya & Karimirad, Madjid & Moan, Torgeir, 2013. "Dynamic response and power performance of a combined Spar-type floating wind turbine and coaxial floating wave energy converter," Renewable Energy, Elsevier, vol. 50(C), pages 47-57.
    3. Karimirad, Madjid & Michailides, Constantine, 2015. "V-shaped semisubmersible offshore wind turbine: An alternative concept for offshore wind technology," Renewable Energy, Elsevier, vol. 83(C), pages 126-143.
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