10
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Decoupled simulations of offshore wind turbines with reduced rotor loads and aerodynamic damping

      ,
      Wind Energy Science
      Copernicus GmbH

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          <p><strong>Abstract.</strong> Decoupled load simulations are a computationally efficient method to perform a dynamic analysis of an offshore wind turbine. Modelling the dynamic interactions between rotor and support structure, especially the damping caused by the rotating rotor, is of importance, since it influences the structural response significantly and has a major impact on estimating fatigue lifetime. Linear damping is usually used for this purpose, but experimentally and analytically derived formulas to calculate an aerodynamic damping ratio often show discrepancies to measurement and simulation data. In this study decoupled simulation methods with reduced and full rotor loads are compared to an integrated simulation. The accuracy of decoupled methods is evaluated and an optimization is performed to obtain aerodynamic damping ratios for different wind speeds that provide the best results with respect to variance and equivalent fatigue loads at distinct output locations. Results show that aerodynamic damping is not linear, but it is possible to match desired output using decoupled models. Moreover, damping ratios obtained from the empirical study suggest that aerodynamic damping increases for higher wind speeds.</p>

          Related collections

          Most cited references16

          • Record: found
          • Abstract: not found
          • Article: not found

          Standardization of the rainflow counting method for fatigue analysis

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Design of monopiles for offshore wind turbines in 10 steps

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Two methods for estimating aeroelastic damping of operational wind turbine modes from experiments

                Bookmark

                Author and article information

                Journal
                Wind Energy Science
                Wind Energ. Sci.
                Copernicus GmbH
                2366-7451
                2018
                February 21 2018
                : 3
                : 1
                : 25-41
                Article
                10.5194/wes-3-25-2018
                ce1fe759-dfbb-4858-9d5f-ebb3c36e9e77
                © 2018

                https://creativecommons.org/licenses/by/4.0/

                History

                Comments

                Comment on this article