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Effects of tidal turbine number on the performance of a 10 MW-class semi-submersible integrated floating wind-current system

Author

Listed:
  • Yang, Yang
  • Shi, Zhaobin
  • Fu, Jianbin
  • Ma, Lu
  • Yu, Jie
  • Fang, Fang
  • Li, Chun
  • Chen, Shunhua
  • Yang, Wenxian

Abstract

The integrated floating energy system (IFES) consisting of wind and tidal/current energy generators is more capable of utilizing energy from the ocean in a relatively lower cost compared to floating offshore wind turbines (FOWTs). Apparently, the performance of an IFES is significantly affected by the amount and installation position of the tidal turbines, which is rarely investigated in the state-of-the-art. In order to address the research need, this study aims to examine the complicated interaction effects between the wind and tidal turbines of a 10 MW-class semi-submersible floating wind-current integrated system (IFES) that is composed of the DTU 10 MW wind turbine, OO-Star platform, and indefinite 550 kW tidal turbines. A coupled analysis tool is developed to consider the aero-hydro-servo-elastic coupling effects of the IFES under wind, wave, current loadings. The dynamic responses of the IFES with 0∼3 tidal turbines under different load cases are obtained. The fatigue damage at the tower base of the IFES is subsequently evaluated to illustrate the effect of the tidal turbines. The results indicate that the increase of the number of tidal turbines leads to a relatively smaller platform pitch motion under each of the examined load cases. The presence of the tidal turbines has an insignificant effect on fatigue damage at the tower base, implying that the integration of tidal turbines has no negative effects on the floating platform. The total power of the IFES with three tidal turbines is expected to increase by 9.46% compared to the FOWT. This study has confirmed the benefits of integrating marine energy convertors with a FOWT in enhancing the energy utilization efficiency and system stability.

Suggested Citation

  • Yang, Yang & Shi, Zhaobin & Fu, Jianbin & Ma, Lu & Yu, Jie & Fang, Fang & Li, Chun & Chen, Shunhua & Yang, Wenxian, 2023. "Effects of tidal turbine number on the performance of a 10 MW-class semi-submersible integrated floating wind-current system," Energy, Elsevier, vol. 285(C).
    • Handle: RePEc:eee:energy:v:285:y:2023:i:c:s0360544223021837
    DOI: 10.1016/j.energy.2023.128789
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