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China Ocean Engineering

, Volume 31, Issue 5, pp 567–577 | Cite as

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

  • Long Meng
  • Tao Zhou
  • Yan-ping He
  • Yong-sheng Zhao
  • Ya-dong Liu
Article

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.

Keywords

Spar-type floating offshore wind turbine concept design combined wind and wave loads coupled dynamic response 

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Copyright information

© Chinese Ocean Engineering Society and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Long Meng
    • 1
    • 2
    • 3
  • Tao Zhou
    • 1
    • 2
    • 3
  • Yan-ping He
    • 1
    • 2
    • 3
  • Yong-sheng Zhao
    • 1
    • 2
    • 3
  • Ya-dong Liu
    • 1
    • 2
    • 3
  1. 1.State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghaiChina
  2. 2.Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE)ShanghaiChina
  3. 3.School of Naval Architecture, Ocean & Civil EngineeringShanghai Jiao Tong UniversityShanghaiChina

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