Definition of a 5-MW Reference Wind Turbine for Offshore System Development

Report

Title: Definition of a 5-MW Reference Wind Turbine for Offshore System Development
Publication Date:
February 01, 2009
Document Number: NREL/TP-500-38060
Pages: 75
Sponsoring Organization:

Document Access

Attachment: Access File
(832 KB)

Citation

Jonkman, J.; Butterfield, S.; Musial, W.; Scott, G. (2009). Definition of a 5-MW Reference Wind Turbine for Offshore System Development. Report by National Renewable Energy Laboratory (NREL). pp 75.
Abstract: 

To support concept studies aimed at assessing offshore wind technology, we developed the specifications of a representative utility-scale multimegawatt turbine now known as the “NREL offshore 5-MW baseline wind turbine.” This wind turbine is a conventional three-bladed upwind variable-speed variable blade-pitch-to-feather-controlled turbine. To create the model, we obtained some broad design information from the published documents of turbine manufacturers, with a heavy emphasis on the REpower 5M machine. Because detailed data was unavailable, however, we also used the publicly available properties from the conceptual models in the WindPACT, RECOFF, and DOWEC projects. We then created a composite from these data, extracting the best available and most representative specifications. This report documents the specifications of the NREL offshore 5-MW baseline wind turbine—including the aerodynamic, structural, and control-system properties—and the rationale behind its development. The model has been, and will likely continue to be, used as a reference by research teams throughout the world to standardize baseline offshore wind turbine specifications and to quantify the benefits of advanced land- and sea-based wind energy technologies.

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