Scaling of Composite Wind Turbine Blades for Rotors of 80 to 120 Meter Diameter
Author:
Griffin Dayton A.1, Zuteck Michael D.2
Affiliation:
1. Global Energy Concepts, LLC, 5729 Lakeview Drive NE, Suite 100, Kirkland, WA 98033 2. MDZ Consulting, 601 Clear Lake Road, Kemah, TX 77565
Abstract
As part of the U.S. Department of Energy’s Wind Partnerships for Advanced Component Technologies (WindPACT) Program, a scaling study was performed on composite wind turbine blades. The study’s objectives were to assess the scaling of current commercial blade materials and manufacturing technologies for rotors of 80 to 120 meters in diameter, to develop scaling curves of estimated weight and cost for rotor blades in that size range, and to identify practical limitations to the scaling of current conventional blade manufacturing and materials. Aerodynamic and structural calculations were performed for a matrix of baseline blade design parameters, and the results were used as a basis for constructing a computational scaling model. The scaling model was then used to calculate structural properties for a wide range of aerodynamic designs and rotor sizes. Blade designs were evaluated on the basis of power performance, weight, static strength in flapwise bending, fatigue life in edgewise bending, and tip deflection under design loads. Calculated results were compared with weight data for current commercial blades, and limitations were identified for scaling up the baseline blade configurations. A series of parametric analyses was performed to quantify the weight reductions possible by modifying the baseline design and to identify the practical limits of those modifications. The model results provide insight into the competing design considerations involved in scaling up current commercial blade designs.
Publisher
ASME International
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Reference12 articles.
1. Griffin, D. A., 2001, “WindPACT Turbine Design Scaling Studies Technical Area 1-Composite Blades for 80- to 120-Meter Rotor,” NREL/SR-500-29492, National Renewable Energy Lab., Golden CO. 2. Malcolm, D. J., and Hansen, A. C., 2001, “Results from the WindPACT Rotor Design Study,” Proc. Windpower 2001, American Wind Energy Association, Washington D.C. 3. Harrison, R., and Jenkins, G., 1994, “Cost Modeling of Horizontal Axis Wind Turbines,” for ETSU W/34/00170/REP, Univ. of Sunderland. 4. Giguere, P., and Selig, M. S., 2000, “Blade Geometry Optimization for the Design of Wind Turbine Rotors,” Proc. of AIAA/ASME Wind Energy Symp. Reno NV, pp. 266–276. 5. Tangler, J. L., and Somers, D. M., 1995, “NREL Airfoil Families for HAWTs,” Proc. Windpower 1995, American Wind Energy Association, Washington D.C., pp. 117–128.
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