Dynamic response of a floating offshore wind turbine
Master thesis
Åpne
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http://hdl.handle.net/11250/182752Utgivelsesdato
2010Metadata
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Sammendrag
The ever increasing demand for renewable energy, combined with limited areas suitable for
large wind farms, has put focus on the development of floating wind turbines. In this thesis
the dynamic response of a floating wind turbine, subjected to forces from wind and waves, is
analyzed. The wind turbine is of a spar buoy design, similar to Statoil's Hywind project.
Simulations with two main type of load cases were run, based on the international offshore
wind turbine standard IEC 61400-3. These were normal production, and parked turbine
exposed to extreme wind and waves. The results show that the peak response coincides
with the largest wave events under production conditions, for all the observed parameters.
In extreme conditions the wind and waves have a more equal contribution to the total
response. Furthermore, the results indicate that the production load cases governs the
design of the rotor blades, while the extreme conditions load cases yields the highest loads
in the tower and substructure.
Beskrivelse
Master's thesis in Offshore structural engineering