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Accession Number DE2013-1087193
Title Simulation-Length Requirements in the Loads Analysis of Offshore Floating Wind Turbines (Preprint).
Publication Date Jun 2013
Media Count 12p
Personal Author D. Matha G. Stewart J. Jonkman L. Haid M. Lackner
Abstract The design standard typically used for offshore wind system development, the International Electrotechnical Commission (IEC) 61400-3 fixed-bottom offshore design standard, explicitly states that the design requirements specified in this standard are not necessarily sufficient to ensure the engineering integrity of floating offshore wind turbines. One major concern is the prescribed simulation length time of 10 minutes for a loads-analysis procedure, which is also typically used for land-based turbines. Because floating platforms have lower natural frequencies, which lead to fewer load cycles over a given period of time, and ocean waves have lower characteristic frequencies than wind turbulence, the 10-min simulation length recommended by the current standards for land-based and offshore turbines may be too short for combined wind and wave loading of floating offshore wind turbines (FOWTs). Therefore, the goal of this paper is to examine the appropriate length of a FOWT simulation--a fundamental question that needs to be answered to develop design requirements.
Keywords Design
Floating offshore wind turbines(FOWTs)
Load analysis
Ocean waves
Offshore sites
Wind turbines

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 97O - Miscellaneous Energy Conversion & Storage
47 - Ocean Sciences & Technology
Corporate Author Department of Energy, Washington, DC.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1402
Contract Number DE-AC36-08GO28308

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