Investigation on the limit state of a triple-column spar floating wind turbine concept

Liang Li, Jin Wang

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

Abstract

The limit state of a newly proposed floating wind turbine concept, in terms of ultimate structural load and fatigue damage load, is studied in the present work. This novel floating structure utilizes a triple-column spar platform to support the wind turbine. An aero-hydro-servo-elastic numerical model is developed to simulate its coupled dynamics. The probability distribution of the ultimate structural load is estimated based on the Monte-Carlo method. In order to reduce computation endeavor, a statistic model is used to extrapolate the sampled-based distribution function. The S-N curve method, a state-of-art fatigue analysis approach, is used to assess the fatigue damage load. The limit states of tower base and fairlead are investigated. It is shown that the newly proposed triple-column spar concept suffers less fatigue damage and the ultimate structural loads are also reduced, resulting in the enhancement of safety level of the floating wind turbine system.
Original languageEnglish
Title of host publication30th International Ocean and Polar Engineering Conference
Place of PublicationCupertino, Calif
PublisherInternational Society of Offshore and Polar Engineers
Pages440-445
Number of pages6
ISBN (Electronic)9781880653845
ISBN (Print)978-1-880653-84-5
Publication statusPublished - 11 Oct 2020
Event30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Shanghai, China
Duration: 12 Oct 202016 Oct 2020

Conference

Conference30th International Ocean and Polar Engineering Conference, ISOPE 2020
CountryChina
CityShanghai
Period12/10/2016/10/20

Keywords

  • floating wind turbine
  • triple-column spar
  • limit state
  • ultimate structural load
  • fatigue damage

Fingerprint Dive into the research topics of 'Investigation on the limit state of a triple-column spar floating wind turbine concept'. Together they form a unique fingerprint.

Cite this