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Mark A. Rumsey Wind Energy Technology Department Sandia National Laboratories (SNL)

Montana State University Bozeman, Montana November 29, 2007. Wind Turbine Technology. Mark A. Rumsey Wind Energy Technology Department Sandia National Laboratories (SNL) Albuquerque, NM.

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Mark A. Rumsey Wind Energy Technology Department Sandia National Laboratories (SNL)

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  1. Montana State University 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

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

  4. Costs: System < $3/lb Blades < $5/lb ~$1.40/Watt * $0.03-0.06/kWh * (Cost Of Energy) - Volatility in the cost of steel and copper - Variable currency exchange rate - Few domestic manufacturers Wind Turbine TechnologyTrends and Challenges • Wind Turbine specifications: • Electrical Power: 1.5-5.0 MW • Turbine Weight: 150-500 tons • Tower Height: 65-100 meters • Blade Length: 34-60 meters • Blade Weight: 6-23 tons

  5. Wind Turbine Lifecycle WECS ≡ Wind Energy Conversion Systems

  6. 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 Sandia Wind Energy R&D Program TPI Composites, RI USDA-ARS, Amarillo, TX NREL/NWTC, Boulder, CO

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

  8. Sandia National Labs and Montana State University Composite Material Testing (1989-present) PI: Prof. John Mandell Material Properties (10000+ tests for 175 Materials) Database updated once per year (Last update 04/2007) http://www.sandia.gov/wind/ Materials Testing

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

  10. 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 Fine-tuning the Goodman Diagram

  11. Manufacturing Uncertainty - Big Issue! As designed As built

  12. 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 Carbon spar cap Slenderized planform Large scale architecture Highly efficient structural design Blade Innovations

  13. Blade Design Improvements Time Integrated aero/structural design process resulted in lighter, less expensive, stronger blade

  14. … for more information: Mark A. Rumsey 505-844-3910 marumse@sandia.gov Wind Energy Technology Department Sandia National Laboratories www.sandia.gov/wind Good web sites: http://www.awea.org/ http://www.eere.energy.gov/windandhydro/

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