Long-term extreme structural loads of a triple-column spar floating wind turbine concept

Liang Li, Jin Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

A novelty floating wind turbine concept, which utilizes a newly developed triple-column spar platform to support the NREL 5MW baseline wind turbine, is proposed in this research. A modified environmental counter method is proposed to estimate the long-term extreme response of the novelty concept. Aero-hydro-servo-elastic coupled simulations are performed. Numerical simulations demonstrate that the triple-column Spar floating wind turbine has a better dynamic performance compared with a single-column concept, in terms of platform motion, tower base structural loads and mooring line tension. The critical environmental condition is identified with the modified environmental contour method, and it is shown that the 50-year return period extreme tower base structural load is reduced with the application of the three-column Spar platform. Nevertheless, the extreme mooring line tension which is dominated by the wind load, is not reduced. The present research reveals the prospect of the three-column Spar concept in the offshore wind energy application.

Original languageEnglish
Title of host publicationProceedings of the 29th International Ocean and Polar Engineering Conference
EditorsJin S. Chung, Odd M. Akselsen, HyunWoo Jin, Hiroyasu Kawai, Yongwon Lee, Dmitri Matskevitch, Suak Ho Van, Decheng Wan, Alan M. Wang, Satoru Yamaguchi
Place of PublicationMountain View, CA
PublisherInternational Society of Offshore and Polar Engineers
Pages412-418
Number of pages7
ISBN (Print)9781880653852
Publication statusPublished - 21 Jun 2019
Event29th International Ocean and Polar Engineering Conference, ISOPE 2019 - Honolulu, United States
Duration: 16 Jun 201921 Jun 2019

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference29th International Ocean and Polar Engineering Conference, ISOPE 2019
CountryUnited States
CityHonolulu
Period16/06/1921/06/19

Keywords

  • environmental contour method
  • floating wind turbine
  • long-term extreme response
  • renewable energy
  • three-column Spar

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  • Cite this

    Li, L., & Wang, J. (2019). Long-term extreme structural loads of a triple-column spar floating wind turbine concept. In J. S. Chung, O. M. Akselsen, H. Jin, H. Kawai, Y. Lee, D. Matskevitch, S. Ho Van, D. Wan, A. M. Wang, & S. Yamaguchi (Eds.), Proceedings of the 29th International Ocean and Polar Engineering Conference (pp. 412-418). (Proceedings of the International Offshore and Polar Engineering Conference). International Society of Offshore and Polar Engineers.