Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length

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With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length ... continued below

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10 p.

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Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J. & Robertson, A. July 1, 2013.

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With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length on the ultimate and fatigue loads of the structure, and will address uncertainties associated with changing the simulation length for the analyzed floating platform. Recommendations of required simulation length based on load uncertainty will be made and compared to current simulation length requirements.

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10 p.

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  • Presented at the 11th International Conference on Structural Safety and Reliability; Columbia University, New York, New York; June 16-20, 2013

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  • Report No.: NREL/CP-5000-58518
  • Grant Number: AC36-08GO28308
  • Office of Scientific & Technical Information Report Number: 1087194
  • Archival Resource Key: ark:/67531/metadc834597

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  • July 1, 2013

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  • May 19, 2016, 9:45 a.m.

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  • April 4, 2017, 12:54 p.m.

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Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J. & Robertson, A. Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length, article, July 1, 2013; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc834597/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.