China Ocean Engineering

, Volume 30, Issue 4, pp 505–520 | Cite as

Coupled dynamic response analysis of a multi-column tension-leg-type floating wind turbine

  • Yong-sheng Zhao (赵永生)
  • Jian-min Yang (杨建民)
  • Yan-ping He (何炎平)Email author
  • Min-tong Gu (顾敏童)


This paper presents a coupled dynamic response analysis of a multi-column tension-leg-type floating wind turbine (WindStar TLP system) under normal operation and parked conditions. Wind-only load cases, wave-only load cases and combined wind and wave load cases were analyzed separately for the WindStar TLP system to identify the dominant excitation loads. Comparisons between an NREL offshore 5-MW baseline wind turbine installed on land and the WindStar TLP system were performed. Statistics of selected response variables in specified design load cases (DLCs) were obtained and analyzed. It is found that the proposed WindStar TLP system has small dynamic responses to environmental loads and it thus has almost the same mean generator power output under operating conditions as the land-based system. The tension mooring system has a sufficient safety factor, and the minimum tendon tension is always positive in all selected DLCs. The ratio of ultimate load of the tower base fore-aft bending moment for the WindStar TLP system versus the land-based system can be as high as 1.9 in all of the DLCs considered. These results will help elucidate the dynamic characteristics of the proposed WindStar TLP system, identify the difference in load effect between it and land-based systems, and thus make relevant modifications to the initial design for the WindStar TLP system.

Key words

floating wind turbine windStar TLP coupled dynamic response operating and parked condition 


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Copyright information

© Chinese Ocean Engineering Society and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Yong-sheng Zhao (赵永生)
    • 1
  • Jian-min Yang (杨建民)
    • 1
  • Yan-ping He (何炎平)
    • 1
    Email author
  • Min-tong Gu (顾敏童)
    • 1
  1. 1.State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghaiChina

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