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Dynamic Analysis of a 10 MW Floating Offshore Wind Turbine Considering the Tower and Platform Flexibility

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Abstract

Recently, semisubmersible floating offshore wind turbine technologies have received considerable attention. For the coupled simulation of semisubmersible floating offshore wind energy, the platform is usually considered a rigid model, which could affect the calculation accuracy of the dynamic responses. The dynamic responses of a TripleSpar floating offshore wind turbine equipped with a 10 MW offshore wind turbine are discussed herein. The simulation of a floating offshore wind turbine under regular waves, white noise waves, and combined wind-wave conditions is conducted. The effects of the tower and platform flexibility on the motion and force responses of the TripleSpar semisubmersible floating offshore wind turbine are investigated. The results show that the flexibility of the tower and platform can influence the dynamic responses of a TripleSpar semisubmersible floating offshore wind turbine. Considering the flexibility of the tower and platform, the tower and platform pitch motions markedly increased compared with the fully rigid model. Moreover, the force responses, particularly for tower base loads, are considerably influenced by the flexibility of the tower and platform. Thus, the flexibility of the tower and platform for the coupled simulation of floating offshore wind turbines must be appropriately examined.

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Acknowledgements

This research was funded by the Key Technology Research and Development Program (Nos. 2022YFB42013 01, and 2022YFB4201304), the National Natural Science Foundation of China (Nos. 52101333, 52071058, 51939002, and 52071301), and the Zhejiang Provincial Natural Science Foundation of China (No. LQ21E090009). This work is also partially supported by the Natural Science Foundation of Liaoning Province (No. 2022-KF-18-01), and the special funds for Promoting High-Quality Development from the Department of Natural Resources of Guangdong Province (No. GDNRC [2020]016).

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Author notes

  1. The two authors contributed equally to this work.

Authors and Affiliations

  1. Key Laboratory of Far-Shore Wind Power Technology of Zhejiang Province, Hangzhou, 311122, China

    Shan Gao & Bin Wang

  2. State Key Laboratory of Coastal and Offshore Engineering, Deepwater Engineering Research Center, Dalian University of Technology, Dalian, 116024, China

    Lixian Zhang & Wei Shi

  3. Powerchina Huadong Engineering Corporation Limited, Hangzhou, 311122, China

    Shan Gao & Bin Wang

  4. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, 116024, China

    Wenhua Wang & Xin Li

  5. Ningbo Institute of Dalian University of Technology, Ningbo, 315000, China

    Wei Shi, Wenhua Wang & Xin Li

Authors
  1. Shan Gao
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  2. Lixian Zhang
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  3. Wei Shi
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  4. Wenhua Wang
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  5. Bin Wang
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  6. Xin Li
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Correspondence to Wei Shi.

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Gao, S., Zhang, L., Shi, W. et al. Dynamic Analysis of a 10 MW Floating Offshore Wind Turbine Considering the Tower and Platform Flexibility. J. Ocean Univ. China 23, 358–370 (2024). https://doi.org/10.1007/s11802-024-5604-2

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  • DOI: https://doi.org/10.1007/s11802-024-5604-2

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