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Wind and Structures Volume 22, Number 5, May 2016 , pages 525-541 DOI: https://doi.org/10.12989/was.2016.22.5.525 |
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Loads and motions for a spar-supported floating offshore wind turbine |
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Abhinav Sultania and Lance Manuel
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| Abstract | ||
| An offshore wind turbine supported by a spar buoy floating platform is the subject of this study on tower and rotor extreme loads. The platform, with a 120-meter draft and assumed to be sited in 320 meters of water, supports a 5 MW wind turbine. A baseline model for this turbine developed at the National Renewable Energy Laboratory (NREL) is employed in stochastic response simulations. The support platform, along with the mooring system consisting of three catenary lines, chosen for loads modeling, is based on the \"Hywind\" floating wind turbine concept. Our interest lies in gaining an understanding of the dynamic coupling between the support platform motion and the turbine loads. We first investigate short-term response statistics using stochastic simulation for a range of different environmental wind and wave conditions. From this study, we identify a few \"controlling\" environmental conditions for which long-term turbine load statistics and probability distributions are established. | ||
| Key Words | ||
| spar platform; offshore wind energy; loads; stochastic simulation | ||
| Address | ||
| Abhinav Sultania and Lance Manuel: Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, USA | ||