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Importance of platform mounting orientation of Y-shaped semi-submersible floating wind turbines: A case study by using surrogate models

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  • Zhou, Shengtao
  • Li, Chao
  • Xiao, Yiqing
  • Cheng, Po Wen

Abstract

The Y-shaped semi-submersible platform, which is generally composed of three outer columns and one center column that are connected by a Y-shaped pontoon, is the one of the popular foundation concepts for floating wind turbines (FWTs). Because of its non-fully-symmetrical configuration, the directionality effects of ocean climate play a significant role in the dynamic response of the floating system, which indicates that the platform mounting orientation (PMO) should be comprehensively considered before installation at sea. This paper aims at evaluating the importance of PMO from the perspective of lifetime dynamic performance. However, simulating all the short-term conditions from a 25-year met-ocean database is computationally unaffordable. So, limited representative load cases are selected by maximum dissimilarity algorithm and reproduced in FAST, a coupled nonlinear aero-hydro-servo-elastic simulator for FWTs. After calibrating and validating four surrogate models based on 1-year fully simulated results, the Kriging model are adopted to construct lifetime responses. Finally, statistics of five indexes reflect the system performance show that the floating system behaves variously between four PMOs due to the distinct hydrodynamic properties. These findings demonstrate the importance of PMO and provide a guidance for the installation of Y-shaped semisubmersible floating wind turbines.

Suggested Citation

  • Zhou, Shengtao & Li, Chao & Xiao, Yiqing & Cheng, Po Wen, 2020. "Importance of platform mounting orientation of Y-shaped semi-submersible floating wind turbines: A case study by using surrogate models," Renewable Energy, Elsevier, vol. 156(C), pages 260-278.
    • Handle: RePEc:eee:renene:v:156:y:2020:i:c:p:260-278
    DOI: 10.1016/j.renene.2020.04.014
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    References listed on IDEAS

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    1. Shengtao Zhou & Baohua Shan & Yiqing Xiao & Chao Li & Gang Hu & Xiaoping Song & Yongqing Liu & Yimin Hu, 2017. "Directionality Effects of Aligned Wind and Wave Loads on a Y-Shape Semi-Submersible Floating Wind Turbine under Rated Operational Conditions," Energies, MDPI, vol. 10(12), pages 1-27, December.
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    Cited by:

    1. Zhou, Shengtao & Li, Chao & Xiao, Yiqing & Wang, Xiaolu & Xiang, Wenyuan & Sun, Qing, 2023. "Evaluation of floating wind turbine substructure designs by using long-term dynamic optimization," Applied Energy, Elsevier, vol. 352(C).
    2. Wang, Shuaishuai & Moan, Torgeir & Nejad, Amir R., 2021. "A comparative study of fully coupled and de-coupled methods on dynamic behaviour of floating wind turbine drivetrains," Renewable Energy, Elsevier, vol. 179(C), pages 1618-1635.

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