Conference article

The OneWind&#174 Modelica Library for Floating Offshore Wind Turbine Simulations with Flexible Structures

Mareike Leimeister
Fraunhofer Institute for Wind Energy and Energy System Technology IWES Northwest, Germany

Philipp Thomas
Fraunhofer Institute for Wind Energy and Energy System Technology IWES Northwest, Germany

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Published in: Proceedings of the 12th International Modelica Conference, Prague, Czech Republic, May 15-17, 2017

Linköping Electronic Conference Proceedings 132:70, p. 633-642

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Published: 2017-07-04

ISBN: 978-91-7685-575-1

ISSN: 1650-3686 (print), 1650-3740 (online)


Floating offshore wind turbines are getting more and more into the focus of interest, as industries aim for larger turbines and deeper water areas. Fully coupled analyses of those highly complex systems are challenging. In this paper, the hierarchical programming structure in Modelica is used to model a fully flexible floating wind turbine system. The single components, as well as special difficulties that have to be dealt with during modeling are addressed. On basis of a reference floating offshore wind turbine, the implemented fully flexible model is compared with its rigid equivalent, as well as results from code-to-code comparisons of free-decay simulations. In addition, further applications of the created model are shown.


Offshore wind energy, floating platform, fully coupled aero-hydro-servo-elastic simulation, Euler-Bernoulli beam, OneWind Modelica Library, MultiBody


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