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Montana State University Wind Turbine Technology

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Presentation on theme: "Montana State University Wind Turbine Technology"— Presentation transcript:

1 Montana State University Wind Turbine Technology
Bozeman, Montana November 29, 2007 Wind Turbine Technology Mark A. Rumsey Wind Energy Technology Department Sandia National Laboratories (SNL) Albuquerque, NM Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.

2 US Wind Resource Map Wind Power Density at 10 meters above ground
The return button will take you back to the menu slide for this file. Wind Power Density at 10 meters above ground

3 Wind Industry Trends 1985 1995 2000 2003 2006 2007 . . . All US electrical generation in 2005 was 1,067,019 MW (Source: DOE/EIA)

4 Wind Turbine Technology Trends and Challenges
Wind Turbine specifications: Electrical Power: MW Turbine Weight: tons Tower Height: meters Blade Length: meters Blade Weight: 6-23 tons Costs: System < $3/lb Blades < $5/lb ~$1.40/Watt * $ /kWh * (Cost Of Energy) - Volatility in the cost of steel and copper - Variable currency exchange rate - Few domestic manufacturers

5

6 Wind Turbine Lifecycle
WECS ≡ Wind Energy Conversion Systems

7 Sandia Wind Energy R&D Program
Blade Technology Materials and Manufacturing Structural, Aerodynamic, and Full Turbine Modeling Lab and Field Testing, and specialized Data Acquisition Systems Advanced Blade Concepts Sensors, Smart Structures and Structural Health Monitoring System Reliability Industry Data Collection Improve reliability of the existing technology and future designs TPI Composites, RI NREL/NWTC, Boulder, CO USDA-ARS, Amarillo, TX

8 Laboratory and Field Testing
FAA-SNL AANC, Albuquerque, NM USDA-ARS, Bushland, TX NREL/NWTC, Boulder, CO NREL/NWTC, Boulder, CO

9 Materials Testing Sandia National Labs and Montana State University
Composite Material Testing (1989-present) PI: Prof. John Mandell Material Properties ( tests for 175 Materials) Database updated once per year (Last update 04/2007)

10 Characterization of Carbon
(for instance) Examine Data Trends N SAERTEX

11 Fine-tuning the Goodman Diagram
Loss of Service Lifetime Small Cycles Very Important Very Severe in Tension Compression May be Worse Loss of Residual Strength High Load at Beginning of Service Lifetime Severe Loss of Strength

12 Manufacturing Uncertainty - Big Issue!
As designed As built

13 Blade Innovations Prototype Sub-scale Blades Manufactured (9 meters)
CX-100 Carbon spar cap Glass skin and shear web TX-100 Carbon triax in skin for bend-twist coupling Constant spar cap thickness BSDS (Blade System Design Study) Flatback airfoils Slenderized planform Large scale architecture Highly efficient structural design

14 Blade Design Improvements
Time Property  ERS-100 CX-100 TX-100 BSDS Weight (lb) 426 383 361 289 % of Design Load at Failure 110% 105% 197% 310% Root Failure Moment (kN-m) 122.8 117.0 121.4 203.9 Max. Carbon Tensile Strain at Failure(%) NA 0.31% 0.59% 0.73% Max. Carbon Compressive 0.30% 0.87% Maximum Tip Displacement (m) 1.43 1.05 1.80 2.79 Integrated aero/structural design process resulted in lighter, less expensive, stronger blade

15 … for more information:
Mark A. Rumsey Wind Energy Technology Department Sandia National Laboratories Good web sites:

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