Preprints
https://doi.org/10.5194/wes-2024-14
https://doi.org/10.5194/wes-2024-14
12 Feb 2024
 | 12 Feb 2024
Status: a revised version of this preprint is currently under review for the journal WES.

Anomalous Response of Floating Offshore Wind Turbine to Wind and Waves

Yihan Liu and Michael Chertkov

Abstract. We study the Floating Offshore Wind Turbine (FOWT) dynamic response to high wind velocity scenarios utilizing an extensive Markov Chain Monte Carlo simulation involving 10,000 trials of a reduced model from Betti et al. (2014) with a blade-pitch PID controller. The research emphasizes analysis of extreme events in surge, pitch and heave of FOWT, identifying and categorizing them based on their statistics, correlations and causal relations to wind and waves. A significant insight is the differentiation of anomalies into short-correlated and long-correlated types, with the latter primarily influenced by wind conditions. For example, one of our findings is that while specific wave conditions may amplify anomalies, wind remains the predominant factor in long-term anomalous pitch behaviors. We anticipate that further development of this analysis of the operation's critical extreme events will be pivotal for advancing control strategies and design considerations in FOWTs, accommodating the turbulent environment they encounter.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Yihan Liu and Michael Chertkov

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on wes-2024-14', Howard Yu, 15 Feb 2024
  • RC1: 'Comment on wes-2024-14', Anonymous Referee #1, 26 Feb 2024
    • CC2: 'Reply on RC1', Michael Chertkov, 11 Mar 2024
  • RC2: 'Comment on wes-2024-14', Anonymous Referee #2, 11 Mar 2024
    • AC1: 'Reply on RC2', Michael Chertkov, 20 Mar 2024
Yihan Liu and Michael Chertkov
Yihan Liu and Michael Chertkov

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Short summary
This study offers new insights into anomalous dynamics of Floating Offshore Wind Turbines under varying wind and waves, using Monte Carlo simulations. Key findings reveal that while waves may play a role, wind largely dictates long-term anomalies, crucial for future FOWT design and control.
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