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Design Studies for Twist-Coupled Wind Turbine Blades

[+] Author Affiliations
James Locke, Ulyses Valencia, Kosuke Ishikawa

Wichita State University, Wichita, KS

Paper No. WIND2003-1043, pp. 324-331; 8 pages
doi:10.1115/WIND2003-1043
From:
  • ASME 2003 Wind Energy Symposium
  • ASME 2003 Wind Energy Symposium
  • Reno, Nevada, USA, January 6–9, 2003
  • Conference Sponsors: ASME
  • ISBN: 1-56347-594-4
  • Copyright © 2003 by The American Institute of Aeronautics and Astronautics, Inc. and the American Society of Mechanical Engineers

abstract

This study presents results obtained for three designs of the Northern Power Systems (NPS) 9.2-meter version of the ERS-100 wind turbine rotor blade. The ERS-100 wind turbine rotor blade was designed and developed by TPI composites. The baseline design uses e-glass unidirectional fibers in combination with ±45-degree and random mat layers for the skin and spar cap. This project involves developing structural finite element models of the baseline design and carbon hybrid designs with twist-bend coupling. All designs were evaluated for a unit load condition and two extreme wind conditions. The unit load condition was used to evaluate the static deflection, twist and twist-coupling parameter. Maximum deflections and strains were determined for the extreme wind conditions. Buckling eigenvalues were determined for a tip load condition. The results indicate that carbon fibers can be used to produce twist-coupled designs with comparable deflections, strains and buckling loads.

Copyright © 2003 by The American Institute of Aeronautics and Astronautics, Inc. and the American Society of Mechanical Engineers

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