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Concept design and coupled dynamic response analysis on 6-MW spar-type floating offshore wind turbine

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Abstract

Tower, Spar platform and mooring system are designed in the project based on a given 6-MW wind turbine. Under wind-induced only, wave-induced only and combined wind and wave induced loads, dynamic response is analyzed for a 6-MW Spar-type floating offshore wind turbine (FOWT) under operating conditions and parked conditions respectively. Comparison with a platform-fixed system (land-based system) of a 6-MW wind turbine is carried out as well. Results demonstrate that the maximal out-of-plane deflection of the blade of a Spar-type system is 3.1% larger than that of a land-based system; the maximum response value of the nacelle acceleration is 215% larger for all the designed load cases being considered; the ultimate tower base fore-aft bending moment of the Spar-type system is 92% larger than that of the land-based system in all of the Design Load Cases (DLCs) being considered; the fluctuations of the mooring tension is mainly wave-induced, and the safety factor of the mooring tension is adequate for the 6-MW FOWT. The results can provide relevant modifications to the initial design for the Spar-type system, the detailed design and model basin test of the 6-MW Spar-type system.

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Authors and Affiliations

  1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Long Meng, Tao Zhou, Yan-ping He, Yong-sheng Zhao & Ya-dong Liu

  2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai, 200240, China

    Long Meng, Tao Zhou, Yan-ping He, Yong-sheng Zhao & Ya-dong Liu

  3. School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Long Meng, Tao Zhou, Yan-ping He, Yong-sheng Zhao & Ya-dong Liu

Authors
  1. Long Meng
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  2. Tao Zhou
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  3. Yan-ping He
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  4. Yong-sheng Zhao
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  5. Ya-dong Liu
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Corresponding author

Correspondence to Tao Zhou.

Additional information

Foundation item: This work was financially supported by the National Basic Research Program of China (973 Program, Grant No. 2014CB046205).

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Meng, L., Zhou, T., He, Yp. et al. Concept design and coupled dynamic response analysis on 6-MW spar-type floating offshore wind turbine. China Ocean Eng 31, 567–577 (2017). https://doi.org/10.1007/s13344-017-0065-7

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  • DOI: https://doi.org/10.1007/s13344-017-0065-7

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