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The influence of different wind and wave conditions on the energy yield and downtime of a Spar-buoy floating wind turbine

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  • Lerch, Markus
  • De-Prada-Gil, Mikel
  • Molins, Climent

Abstract

Floating offshore wind turbines (FOWT) have been extensively proven in model tests and are reaching currently a pre-commercial phase where large scale demonstrators are being built offshore. This transition increases the need for models able to assess the performance at suitable offshore locations. A simplified model is proposed that computes the dynamic response of FOWT to different met-ocean conditions and calculates the energy production considering the behavior of the structure as well as the downtime of the turbine due to exceeding operating limits. The model is validated against FAST and applied to three offshore sites. The motions response and hub acceleration are largest for West of Barra followed by Gulf of Maine and Costa Brava. The energy generation is also the highest at West of Barra, where a capacity factor of 75% is reached. A comparison between the energy generation of a bottom-fixed and FOWT indicates a difference of less than 1% for all sites. Finally, a sensitivity analysis of hub acceleration and platform pitch limits studies the impact on the capacity factor and downtime. The model can be useful for feasibility or pre-engineering studies and can be of interest for both investigators and developers of offshore wind projects.

Suggested Citation

  • Lerch, Markus & De-Prada-Gil, Mikel & Molins, Climent, 2019. "The influence of different wind and wave conditions on the energy yield and downtime of a Spar-buoy floating wind turbine," Renewable Energy, Elsevier, vol. 136(C), pages 1-14.
    • Handle: RePEc:eee:renene:v:136:y:2019:i:c:p:1-14
    DOI: 10.1016/j.renene.2018.12.096
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    References listed on IDEAS

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    Cited by:

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    3. Florin Onea & Eugen Rusu, 2019. "An Assessment of Wind Energy Potential in the Caspian Sea," Energies, MDPI, vol. 12(13), pages 1-18, July.
    4. Zhenqing Liu & Qingsong Zhou & Yuangang Tu & Wei Wang & Xugang Hua, 2019. "Proposal of a Novel Semi-Submersible Floating Wind Turbine Platform Composed of Inclined Columns and Multi-Segmented Mooring Lines," Energies, MDPI, vol. 12(9), pages 1-32, May.
    5. Zhou, Binzhen & Hu, Jianjian & Jin, Peng & Sun, Ke & Li, Ye & Ning, Dezhi, 2023. "Power performance and motion response of a floating wind platform and multiple heaving wave energy converters hybrid system," Energy, Elsevier, vol. 265(C).

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