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Automated operational modal analysis on an offshore wind turbine: challenges, results and opportunities
Weijtjens, W.; De Sitter, G.; Devriendt, C.; Guillaume, P. (2015). Automated operational modal analysis on an offshore wind turbine: challenges, results and opportunities, in: Aenlle, M.L. et al. (Ed.) IOMAC'15. 6th International Operational Modal Analysis Conference. pp. 713-730
In: Aenlle, M.L. et al. (Ed.) (2015). IOMAC'15. 6th International Operational Modal Analysis Conference. IOMAC: Copenhagen. ISBN 978-84-16046-80-5. , more
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Document type: Conference paper
Keyword
    Marine/Coastal
Author keywords
    Offshore wind turbine; Structural Health Monitoring; Automated OMA;Harmonics; Damping
Authors  Top 
  • Weijtjens, W., more
  • De Sitter, G., more
  • Devriendt, C., more
  • Guillaume, P., more
Abstract
    This contribution summarizes over two years of applied automated operational modal analysis on an operational offshore wind turbine. It discusses the applied automated Operational Modal Analysis (OMA) algorithm and the challenges of applying OMA to operational offshore wind turbines, ranging from the strong presence of rotor-harmonics to the sensitivity of modal parameters to environmental and operational conditions. The paper shows the most interesting results of over two years of monitoring, including an industry-first in-depth analysis of the behavior of the damping over the entire operational window. Moreover, a short discussion on the potential for OMA as a monitoring tool for offshore wind turbines is given.
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