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Sample records for turbine small wind

  1. NREL: Wind Research - Small Wind Turbine Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Small Wind Turbine Development A photo of Southwest Windpower's Skystream wind turbine in front of a home. PIX14936 Southwest Windpower's Skystream wind turbine. A photo of the ...

  2. Small Wind Turbine Certifications Signal Maturing Industry |...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Small Wind Turbine Certifications Signal Maturing Industry Small Wind Turbine Certifications Signal Maturing Industry January 6, 2014 - 10:00am Addthis A 5-kW wind turbine with a ...

  3. NREL: Wind Research - Small Wind Turbine Independent Testing

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Small Wind Turbine Independent Testing One of the barriers for the small wind market has been the lack of small wind turbine systems that are independently tested and certified. To ...

  4. Companies Selected for Small Wind Turbine Project

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Companies Selected for Small Wind Turbine Project For more information contact: Terry Monrad (303) 972-9246 Golden, Colo., Nov. 27, 1996 -- In an effort to develop cost-effective, low-maintenance wind turbine systems, the Department of Energy's National Renewable Energy Laboratory (NREL) has selected four companies to participate in the Small Wind Turbine Project. The four companies are Windlite Co., Mountain View, Calif.; World Power Technologies, Duluth, Minn.; Cannon/Wind Eagle Corp.,

  5. NREL: Wind Research - Small and Distributed Wind Turbine Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Small and Distributed Wind Turbine Research A distributed wind farm in Wisconsin at sunset. Photo by Todd Spink The objectives of NREL's small and distributed wind research is to increase consumer confidence in and the number of certified small wind turbines on the market through certification testing, to improve performance, and to reduce installed costs so that wind can compete in the retail electric market with other forms of distributed generation. Distributed wind applications include

  6. Establishment of Small Wind Turbine Regional Test Centers (Presentation)

    SciTech Connect (OSTI)

    Sinclair, K.

    2011-09-16

    This presentation offers an overview of the Regional Test Centers project for Small Wind Turbine testing and certification.

  7. Small Wind Guidebook/What Size Wind Turbine Do I Need | Open...

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  8. Final Report - Certifying the Performance of Small Wind Turbines

    SciTech Connect (OSTI)

    Sherwood, Larry

    2015-08-28

    The Small Wind Certification Council (SWCC) created a successful accredited certification program for small and medium wind turbines using the funding from this grant. SWCC certifies small turbines (200 square meters of swept area or less) to the American Wind Energy Association (AWEA) Small Wind Turbine Performance and Safety Standard (AWEA Standard 9.1 – 2009). SWCC also certifies medium wind turbines to the International Electrical Commission (IEC) Power Performance Standard (IEC 61400-12-1) and Acoustic Performance Standard (IEC 61400-11).

  9. New IRS Rules for Small and Medium Wind Turbines

    Broader source: Energy.gov [DOE]

    The Small Wind Certification Council (SWCC) will host a webinar on how certification is being used to meet the new Internal Revenue Service (IRS) requirements for small and medium wind turbines...

  10. WINDExchange Webinar: Small and Distributed Wind Turbine Update

    Broader source: Energy.gov [DOE]

    Save the date for this free webinar presenting an overview of recent news and updates pertaining to small and distributed wind turbines.

  11. DWEA Webinar: IRS Guidance for Small Wind Turbines

    Broader source: Energy.gov [DOE]

    The U.S. Internal Revenue Service (IRS) has issued Notice 2015-4 providing new performance and quality standards of small wind turbines – defined as having a nameplate capacity of up to 100 kW – in...

  12. Quiet airfoils for small and large wind turbines

    DOE Patents [OSTI]

    Tangler, James L.; Somers, Dan L.

    2012-06-12

    Thick airfoil families with desirable aerodynamic performance with minimal airfoil induced noise. The airfoil families are suitable for a variety of wind turbine designs and are particularly well-suited for use with horizontal axis wind turbines (HAWTs) with constant or variable speed using pitch and/or stall control. In exemplary embodiments, a first family of three thick airfoils is provided for use with small wind turbines and second family of three thick airfoils is provided for use with very large machines, e.g., an airfoil defined for each of three blade radial stations or blade portions defined along the length of a blade. Each of the families is designed to provide a high maximum lift coefficient or high lift, to exhibit docile stalls, to be relatively insensitive to roughness, and to achieve a low profile drag.

  13. Distributed Wind Market Report: Small Turbines Lead to Big Growth...

    Energy Savers [EERE]

    Image: Northern Power Systems 2 of 11 A 1.65 megawatt (MW) wind turbine is installed at ... Image: Bruce Hatchett, Energy Options 5 of 11 A 25 kW wind turbine is installed in ...

  14. NREL Small Wind Turbine Test Project: Mariah Power's Windspire Wind Turbine Test Chronology

    SciTech Connect (OSTI)

    Huskey, A.; Forsyth, T.

    2009-06-01

    This report presents a chronology of tests conducted at NREL's National Wind Technology Center on Mariah Power's Windspire 1.2-kW wind turbine and a letter of response from Mariah Power.

  15. IRS Issues New Tax Credit Guidance for Owners of Small Wind Turbines...

    Office of Environmental Management (EM)

    certification requirements that small wind turbine owners must meet to qualify for the 30% investment tax credit (ITC). For wind turbine owners to qualify for this tax credit under ...

  16. Energy Department Helps Manufacturers of Small and Mid-Size Wind Turbines

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Meet Certification Requirements | Department of Energy Helps Manufacturers of Small and Mid-Size Wind Turbines Meet Certification Requirements Energy Department Helps Manufacturers of Small and Mid-Size Wind Turbines Meet Certification Requirements May 11, 2016 - 5:01pm Addthis NREL has awarded four subcontracts to manufacturers of small and mid-size wind turbines to improve their turbine design and manufacturing processes while reducing costs and improving efficiency as they work toward

  17. Energy Department Helps Manufacturers of Small and Mid-Size Wind Turbines

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Meet Certification Requirements | Department of Energy Manufacturers of Small and Mid-Size Wind Turbines Meet Certification Requirements Energy Department Helps Manufacturers of Small and Mid-Size Wind Turbines Meet Certification Requirements October 1, 2015 - 1:04pm Addthis Energy Department Helps Manufacturers of Small and Mid-Size Wind Turbines Meet Certification Requirements Mark Higgins Operations Supervisor, Wind & Water Power Technologies Office On October 1, the Energy

  18. Small Wind Turbines Taking Off: Q&A with Andy Kruse

    Broader source: Energy.gov [DOE]

    We caught up with Andy Kruse in Dallas to learn about mass production for small wind turbines, who is buying these systems, and what lies ahead for the small wind industry.

  19. Keeping America Competitive: Bringing Down the Cost of Small Wind Turbines

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    | Department of Energy Bringing Down the Cost of Small Wind Turbines Keeping America Competitive: Bringing Down the Cost of Small Wind Turbines January 23, 2013 - 2:26pm Addthis Bison standing in front of a 10 kW wind turbine manufactured by Bergey Windpower Company. | Photo by Northwest Seed, NREL. Bison standing in front of a 10 kW wind turbine manufactured by Bergey Windpower Company. | Photo by Northwest Seed, NREL. Mark Higgins Operations Supervisor, Wind & Water Power Technologies

  20. City of Medford Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Medford Wind Turbine Jump to: navigation, search Name City of Medford Wind Turbine Facility City of Medford Wind Turbine Sector Wind energy Facility Type Small Scale Wind Facility...

  1. New England Tech Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Tech Wind Turbine Jump to: navigation, search Name New England Tech Wind Turbine Facility New England Tech Wind Turbine Sector Wind energy Facility Type Small Scale Wind Facility...

  2. ARE660 Wind Generator: Low Wind Speed Technology for Small Turbine Development

    SciTech Connect (OSTI)

    Robert W. Preus; DOE Project Officer - Keith Bennett

    2008-04-23

    This project is for the design of a wind turbine that can generate most or all of the net energy required for homes and small businesses in moderately windy areas. The purpose is to expand the current market for residential wind generators by providing cost effective power in a lower wind regime than current technology has made available, as well as reduce noise and improve reliability and safety. Robert W. Preus experience designing and/or maintaining residential wind generators of many configurations helped identify the need for an improved experience of safety for the consumer. Current small wind products have unreliable or no method of stopping the wind generator in fault or high wind conditions. Consumers and their neighbors do not want to hear their wind generators. In addition, with current technology, only sites with unusually high wind speeds provide payback times that are acceptable for the on-grid user. Abundant Renewable Energys (ARE) basic original concept for the ARE660 was a combination of a stall controlled variable speed small wind generator and automatic fail safe furling for shutdown. The stall control for a small wind generator is not novel, but has not been developed for a variable speed application with a permanent magnet alternator (PMA). The fail safe furling approach for shutdown has not been used to our knowledge.

  3. 2011_AWEA_Small_Wind_Turbine_Market_Report.pdf | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    1AWEASmallWindTurbineMarketReport.pdf 2011AWEASmallWindTurbineMarketReport.pdf 2011AWEASmallWindTurbineMarketReport.pdf PDF icon 2011AWEASmallWindTurbineMark...

  4. Swept Blade Aero-Elastic Model for a Small Wind Turbine (Presentation)

    SciTech Connect (OSTI)

    Damiani, R.; Lee, S.; Larwood, S.

    2014-07-01

    A preprocessor for analyzing preswept wind turbines using the in-house aero-elastic tool coupled with a multibody dynamic simulator was developed. A baseline 10-kW small wind turbine with straight blades and various configurations that featured bend-torsion coupling via blade-tip sweep were investigated to study their impact on ultimate loads and fatigue damage equivalent loads.

  5. Building Toward a Small Wind Turbine Site Assessor Credential (Presentation)

    SciTech Connect (OSTI)

    Sinclair, K.

    2013-09-01

    Proper site assessment is integral to the development of a successful small wind project. Without a small wind site assessor certification program, consumers, including state incentive program managers, lack a benchmark for differentiating between qualified and nonqualified site assessors. A small wind site assessor best practice manual is being developed as a resource for consumers until a credential program becomes available. This presentation describes the purpose, proposed content, and the National Renewable Energy Laboratory's approach to the development of such a manual.

  6. Testing Small Wind Turbines at the National Renewable Energy Laboratory (NREL) (Poster)

    SciTech Connect (OSTI)

    Bowen, A.; Huskey, A.; Hur, J.; Jager, D.; van Dam, J.; Smith, J.

    2010-05-01

    Poster presented at the AWEA 2010 conference illustrates NREL's testing of five small wind turbines in the first round of its independent testing project. Tests include power performance, noise, duration, safety and function, and power quality (where applicable).

  7. Wind turbine

    DOE Patents [OSTI]

    Cheney, Jr., Marvin C.

    1982-01-01

    A wind turbine of the type having an airfoil blade (15) mounted on a flexible beam (20) and a pitch governor (55) which selectively, torsionally twists the flexible beam in response to wind turbine speed thereby setting blade pitch, is provided with a limiter (85) which restricts unwanted pitch change at operating speeds due to torsional creep of the flexible beam. The limiter allows twisting of the beam by the governor under excessive wind velocity conditions to orient the blades in stall pitch positions, thereby preventing overspeed operation of the turbine. In the preferred embodiment, the pitch governor comprises a pendulum (65,70) which responds to changing rotor speed by pivotal movement, the limiter comprising a resilient member (90) which engages an end of the pendulum to restrict further movement thereof, and in turn restrict beam creep and unwanted blade pitch misadjustment.

  8. Energy 101: Wind Turbines

    ScienceCinema (OSTI)

    None

    2013-05-29

    See how wind turbines generate clean electricity from the power of the wind. Highlighted are the various parts and mechanisms of a modern wind turbine.

  9. Westwind Wind Turbines | Open Energy Information

    Open Energy Info (EERE)

    Ireland based small scale wind turbine manufacturer which originally started in Australia. References: Westwind Wind Turbines1 This article is a stub. You can help OpenEI...

  10. Low Speed Technology for Small Turbine Development Reaction Injection Molded 7.5 Meter Wind Turbine Blade

    SciTech Connect (OSTI)

    David M. Wright; DOE Project Officer - Keith Bennett

    2007-07-31

    An optimized small turbine blade (7.5m radius) was designed and a partial section molded with the RIM (reaction-injection molded polymer) process for mass production. The intended market is for generic three-bladed wind turbines, 100 kilowatts or less, for grid-assist end users with rural and semi-rural sites, such as the farm/ranch market, having low to moderate IEC Class 3-4 wind regimes. This blade will have substantial performance improvements over, and be cheaper than, present-day 7.5m blades. This is made possible by the injection-molding process, which yields high repeatability, accurate geometry and weights, and low cost in production quantities. No wind turbine blade in the 7.5m or greater size has used this process. The blade design chosen uses a RIM skin bonded to a braided infused carbon fiber/epoxy spar. This approach is attractive to present users of wind turbine blades in the 5-10m sizes. These include rebladeing California wind farms, refurbishing used turbines for the Midwest farm market, and other manufacturers introducing new turbines in this size range.

  11. wind turbines

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    turbines - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy

  12. Certification for Small Wind Turbine Installers: What's the Hang Up?; Preprint

    SciTech Connect (OSTI)

    Oteri, F.; Sinclair, K.

    2012-03-01

    Several programs have been implemented to support the advancement of a professional, mature small wind industry and to ensure that this industry moves forward in a sustainable direction. The development of a standard for small wind turbine systems and the creation of the Small Wind Certification Council support small wind technology that is reliable and safe. Consumers and incentive programs will ultimately rely on certification to differentiate among systems sold in the U.S. market. Certification of small wind installers is yet another component deemed necessary for this industry to expand. The National Renewable Energy Laboratory, under the guidance and funding support of the U.S. Department of Energy, supported the development of small wind system installer certification provided via the North American Board of Certified Energy Practitioners. However, the small wind community is not supportive of the installer certification. There are currently only nine certified installers in the U.S. pool. This paper provides an overview of the installer certification program and why more small wind turbine installers are not pursuing this certification.

  13. Development and Analysis of a Swept Blade Aeroelastic Model for a Small Wind Turbine (Presentation)

    SciTech Connect (OSTI)

    Preus, R.; Damiani, R.; Lee, S.; Larwood, S.

    2014-06-01

    As part of the U.S. Department-of-Energy-funded Competitiveness Improvement Project, the National Renewable Energy Laboratory (NREL) developed new capabilities for aeroelastic modeling of precurved and preswept blades for small wind turbines. This presentation covers the quest for optimized rotors, computer-aided engineering tools, a case study, and summary of the results.

  14. Expanding Small Wind Turbine Certification Testing - Establishment of Regional Test Centers (Poster)

    SciTech Connect (OSTI)

    Jimenez, A.; Bowen, A.; Forsyth, T.; Huskey, A.; Sinclair, K.; van Dam, J.; Smith, J.

    2010-05-01

    Presented at the WINDPOWER 2010 Conference & Exhibition, 23-26 May 2010, Dallas, Texas. The rapid growth of the small wind turbine (SWT) market is attracting numerous entrants. Small wind turbine purchasers now have many options but often lack information (such as third-party certification) to select a quality turbine. Most SWTs do not have third-party certification due to the expense and difficulty of the certification process. Until recently, the only SWT certification bodies were in Europe. In North America, testing has been limited to U.S. Department of Energy (DOE) subsidized tests conducted at the National Wind Technology Center (NWTC) under the ongoing Independent Testing Project. The goal is to increase the number of certified turbines and gain greater consumer confidence in SWT technology. To reduce certification testing costs, DOE/NREL is assisting in establishing a network of Regional Test Centers (RTCs) to conduct SWT third-party certification testing. To jump-start these RTCs, DOE/NREL is providing financial and technical assistance for an initial round of tests. The goal is to establish a lower-cost U.S. small wind testing capability that will lead to increased SWT certification. This poster describes the project, describes how it fits within broader SWT certification activities, and provides current status.

  15. Small Wind Guidebook | Open Energy Information

    Open Energy Info (EERE)

    Home >> Wind >> Small Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  16. Three D Metals Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Three D Metals Wind Turbine Jump to: navigation, search Name Three D Metals Wind Turbine Facility Three D Metals Wind Turbine Sector Wind energy Facility Type Small Scale Wind...

  17. Evaluation of Aeroelastically Tailored Small Wind Turbine Blades Final Project Report

    SciTech Connect (OSTI)

    Griffin, Dayton A.

    2005-09-29

    Evaluation of Aeroelastically Tailored Small Wind Turbine Blades Final Report Global Energy Concepts, LLC (GEC) has performed a conceptual design study concerning aeroelastic tailoring of small wind turbine blades. The primary objectives were to evaluate ways that blade/rotor geometry could be used to enable cost-of-energy reductions by enhancing energy capture while constraining or mitigating blade costs, system loads, and related component costs. This work builds on insights developed in ongoing adaptive-blade programs but with a focus on application to small turbine systems with isotropic blade material properties and with combined blade sweep and pre-bending/pre-curving to achieve the desired twist coupling. Specific goals of this project are to: (A) Evaluate and quantify the extent to which rotor geometry can be used to realize load-mitigating small wind turbine rotors. Primary aspects of the load mitigation are: (1) Improved overspeed safety affected by blades twisting toward stall in response to speed increases. (2) Reduced fatigue loading affected by blade twisting toward feather in response to turbulent gusts. (B) Illustrate trade-offs and design sensitivities for this concept. (C) Provide the technical basis for small wind turbine manufacturers to evaluate this concept and commercialize if the technology appears favorable. The SolidWorks code was used to rapidly develop solid models of blade with varying shapes and material properties. Finite element analyses (FEA) were performed using the COSMOS code modeling with tip-loads and centripetal accelerations. This tool set was used to investigate the potential for aeroelastic tailoring with combined planform sweep and pre-curve. An extensive matrix of design variables was investigated, including aerodynamic design, magnitude and shape of planform sweep, magnitude and shape of blade pre-curve, material stiffness, and rotor diameter. The FEA simulations resulted in substantial insights into the structural

  18. Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbines; Period of Performance: October 31, 2002--January 31, 2003

    SciTech Connect (OSTI)

    Selig, M. S.; McGranahan, B. D.

    2004-10-01

    Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbinesrepresents the fourth installment in a series of volumes documenting the ongoing work of th University of Illinois at Urbana-Champaign Low-Speed Airfoil Tests Program. This particular volume deals with airfoils that are candidates for use on small wind turbines, which operate at low Reynolds numbers.

  19. Development of a Direct Drive Permanent Magnet Generator for Small Wind Turbines

    SciTech Connect (OSTI)

    Chertok, Allan; Hablanian, David; McTaggart, Paul; DOE Project Officer - Keith Bennett

    2004-11-16

    In this program, TIAX performed the conceptual design and analysis of an innovative, modular, direct-drive permanent magnet generator (PMG) for use in small wind turbines that range in power rating from 25 kW to 100 kW. TIAX adapted an approach that has been successfully demonstrated in high volume consumer products such as direct-drive washing machines and portable generators. An electromagnetic model was created and the modular PMG design was compared to an illustrative non-modular design. The resulting projections show that the modular design can achieve significant reductions in size, weight, and manufacturing cost without compromising efficiency. Reducing generator size and weight can also lower the size and weight of other wind turbine components and hence their manufacturing cost.

  20. Wind Turbine Tribology Seminar

    Broader source: Energy.gov [DOE]

    Wind turbine reliability issues are often linked to failures of contacting components, such as bearings, gears, and actuators. Therefore, special consideration to tribological design in wind...

  1. Scale Models & Wind Turbines

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Turbines * Readings about Cape Wind and other offshore and onshore siting debates for wind farms * Student Worksheet * A number of scale model items: Ken, Barbie or other dolls...

  2. WINDExchange: Siting Wind Turbines

    Wind Powering America (EERE)

    Deployment Activities Printable Version Bookmark and Share Regional Resource Centers Economic Development Siting Resources & Tools Siting Wind Turbines This page provides resources about wind turbine siting. American Wind Wildlife Institute The American Wind Wildlife Institute (AWWI) facilitates timely and responsible development of wind energy, while protecting wildlife and wildlife habitat. AWWI was created and is sustained by a unique collaboration of environmentalists, conservationists,

  3. Reliable, Efficient and Cost-Effective Electric Power Converter for Small Wind Turbines Based on AC-link Technology

    SciTech Connect (OSTI)

    Darren Hammell; Mark Holveck; DOE Project Officer - Keith Bennett

    2006-08-01

    Grid-tied inverter power electronics have been an Achilles heel of the small wind industry, providing opportunity for new technologies to provide lower costs, greater efficiency, and improved reliability. The small wind turbine market is also moving towards the 50-100kW size range. The unique AC-link power conversion technology provides efficiency, reliability, and power quality advantages over existing technologies, and Princeton Power will adapt prototype designs used for industrial asynchronous motor control to a 50kW small wind turbine design.

  4. Study of television interference by small wind turbines. Final subcontract report

    SciTech Connect (OSTI)

    Sengupta, D.L.; Senior, T.B.A.; Ferris, J.E.

    1983-01-01

    Electromagnetic interference to television reception caused by small wind turbines (generating about 5 kW of power) has been studied by carrying out measurements using 1/8th-scale models of small windmills in conjunction with a microwave TV system inside an anechoic chamber. Two- and three-bladed windmills with metallized and wooden blades rectangular and trapezoidal in shape were investigated. The locally available TV Channel 9 signal was received and, after up-converting its center frequency to 4.0 GHz, was used as the rf source of the microwave TV system. The television interference (TVI) results were extrapolated to give the TVI effects of the corresponding full-scale windmills at the commercial TV Channel frequencies. Generally, it was found that the two- and three-bladed machines produced similar TVI effects, the metallized blades producing stronger interference than the wooden blades. Extrapolation of the results obtained indicate that, even at the highest TV frequency, the significant TVI effects (video distortion) produced by small wind turbines will not extend out to a distance larger than about 2.5 times the rotor diameter. At lower TV frequenies (or Channel numbers) the distance will be correspondingly smaller. Within this distance, the observed effects will generally be small to negligible over most of the region except possibly in the forward interference direction.

  5. Portsmouth Abbey School Wind Turbine Wind Farm | Open Energy...

    Open Energy Info (EERE)

    Abbey School Wind Turbine Wind Farm Jump to: navigation, search Name Portsmouth Abbey School Wind Turbine Wind Farm Facility Portsmouth Abbey School Wind Turbine Sector Wind energy...

  6. Harbec Plastic Wind Turbine Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Harbec Plastic Wind Turbine Wind Farm Jump to: navigation, search Name Harbec Plastic Wind Turbine Wind Farm Facility Harbec Plastic Wind Turbine Sector Wind energy Facility Type...

  7. Wind Turbines Benefit Crops

    ScienceCinema (OSTI)

    Takle, Gene

    2013-03-01

    Ames Laboratory associate scientist Gene Takle talks about research into the effect of wind turbines on nearby crops. Preliminary results show the turbines may have a positive effect by cooling and drying the crops and assisting with carbon dioxide uptake.

  8. Luther College Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Luther College Wind Turbine Jump to: navigation, search Name Luther College Wind Turbine Facility Luther College Wind Turbine Sector Wind energy Facility Type Community Wind...

  9. Williams Stone Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Stone Wind Turbine Jump to: navigation, search Name Williams Stone Wind Turbine Facility Williams Stone Wind Turbine Sector Wind energy Facility Type Community Wind Facility Status...

  10. Portsmouth Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Wind Turbine Jump to: navigation, search Name Portsmouth Wind Turbine Facility Portsmouth Wind Turbine Sector Wind energy Facility Type Community Wind Facility Status In Service...

  11. Charlestown Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Charlestown Wind Turbine Jump to: navigation, search Name Charlestown Wind Turbine Facility Charlestown Wind Turbine Sector Wind energy Facility Type Commercial Scale Wind Facility...

  12. Vertical Axis Wind Turbine

    Energy Science and Technology Software Center (OSTI)

    2002-04-01

    Blade fatigue life is an important element in determining the economic viability of the Vertical-Axis Wind Turbine (VAWT). VAWT-SAL Vertical Axis Wind Turbine- Stochastic Aerodynamic Loads Ver 3.2 numerically simulates the stochastic (random0 aerodynamic loads of the Vertical-Axis Wind Turbine (VAWT) created by the atomspheric turbulence. The program takes into account the rotor geometry, operating conditions, and assumed turbulence properties.

  13. Energy 101: Wind Turbines - 2014 Update | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Wind Turbines - 2014 Update Energy 101: Wind Turbines - 2014 Update

  14. Testing America's Wind Turbines | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Testing America's Wind Turbines Testing America's Wind Turbines View All Maps Addthis

  15. Sandia Wind Turbine Loads Database

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wind Turbine Loads Database - Sandia Energy Energy Search Icon Sandia Home Locations ... Twitter Google + Vimeo Newsletter Signup SlideShare Sandia Wind Turbine Loads Database ...

  16. Wind turbine | Open Energy Information

    Open Energy Info (EERE)

    turbine Jump to: navigation, search Dictionary.png Wind turbine: A machine that converts wind energy to mechanical energy; typically connected to a generator to produce...

  17. wind-turbine fleet reliability

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    wind-turbine fleet reliability - Sandia Energy Energy Search Icon Sandia Home Locations ... SunShot Grand Challenge: Regional Test Centers wind-turbine fleet reliability Home...

  18. Small Wind Guidebook/State Information Portal | Open Energy Informatio...

    Open Energy Info (EERE)

    Home >> Wind >> Small Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  19. Small Wind Electric Systems | Department of Energy

    Energy Savers [EERE]

    A wind electric system is made up of a wind turbine mounted on a tower to provide better access to stronger winds. In addition to the turbine and tower, small wind electric systems ...

  20. Howden Wind Turbines Ltd | Open Energy Information

    Open Energy Info (EERE)

    Howden Wind Turbines Ltd Jump to: navigation, search Name: Howden Wind Turbines Ltd Place: United Kingdom Sector: Wind energy Product: Howden was a manufacturer of wind turbines in...

  1. Wind Turbine Blade Design

    K-12 Energy Lesson Plans and Activities Web site (EERE)

    Blade engineering and design is one of the most complicated and important aspects of modern wind turbine technology. Engineers strive to design blades that extract as much energy from the wind as possible throughout a range of wind speeds and gusts, yet are still durable, quiet and cheap. A variety of ideas for building turbines and teacher handouts are included in this document and at the Web site.

  2. 20% Wind Energy by 2030 - Chapter 2: Wind Turbine Technology...

    Office of Environmental Management (EM)

    - Chapter 2: Wind Turbine Technology Summary Slides 20% Wind Energy by 2030 - Chapter 2: Wind Turbine Technology Summary Slides Summary slides for wind turbine technology, its ...

  3. Wind Turbine Generator System Safety and Function Test Report for the Entegrity EW50 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2012-11-01

    This report summarizes the results of a safety and function test that NREL conducted on the Entegrity EW50 wind turbine. This test was conducted in accordance with the International Electrotechnical Commissions' (IEC) standard, Wind Turbine Generator System Part 2: Design requirements for small wind turbines, IEC 61400-2 Ed.2.0, 2006-03.

  4. Wind Turbine Generator System Safety and Function Test Report for the Ventera VT10 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2012-11-01

    This report summarizes the results of a safety and function test that NREL conducted on the Ventera VT10 wind turbine. This test was conducted in accordance with the International Electrotechnical Commissions' (IEC) standard, Wind Turbine Generator System Part 2: Design requirements for small wind turbines, IEC 61400-2 Ed.2.0, 2006-03.

  5. Coalescing Wind Turbine Wakes

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Lee, S.; Churchfield, M.; Sirnivas, S.; Moriarty, P.; Nielsen, F. G.; Skaare, B.; Byklum, E.

    2015-06-18

    A team of researchers from the National Renewable Energy Laboratory and Statoil used large-eddy simulations to numerically investigate the merging wakes from upstream offshore wind turbines. Merging wakes are typical phenomena in wind farm flows in which neighboring turbine wakes consolidate to form complex flow patterns that are as yet not well understood. In the present study, three 6-MW turbines in a row were subjected to a neutrally stable atmospheric boundary layer flow. As a result, the wake from the farthest upstream turbine conjoined the downstream wake, which significantly altered the subsequent velocity deficit structures, turbulence intensity, and the globalmore » meandering behavior. The complexity increased even more when the combined wakes from the two upstream turbines mixed with the wake generated by the last turbine, thereby forming a "triplet" structure. Although the influence of the wake generated by the first turbine decayed with downstream distance, the mutated wakes from the second turbine continued to influence the downstream wake. Two mirror-image angles of wind directions that yielded partial wakes impinging on the downstream turbines yielded asymmetric wake profiles that could be attributed to the changing flow directions in the rotor plane induced by the Coriolis force. In conclusion, the turbine wakes persisted for extended distances in the present study, which is a result of low aerodynamic surface roughness typically found in offshore conditions« less

  6. Coalescing Wind Turbine Wakes

    SciTech Connect (OSTI)

    Lee, S.; Churchfield, M.; Sirnivas, S.; Moriarty, P.; Nielsen, F. G.; Skaare, B.; Byklum, E.

    2015-06-18

    A team of researchers from the National Renewable Energy Laboratory and Statoil used large-eddy simulations to numerically investigate the merging wakes from upstream offshore wind turbines. Merging wakes are typical phenomena in wind farm flows in which neighboring turbine wakes consolidate to form complex flow patterns that are as yet not well understood. In the present study, three 6-MW turbines in a row were subjected to a neutrally stable atmospheric boundary layer flow. As a result, the wake from the farthest upstream turbine conjoined the downstream wake, which significantly altered the subsequent velocity deficit structures, turbulence intensity, and the global meandering behavior. The complexity increased even more when the combined wakes from the two upstream turbines mixed with the wake generated by the last turbine, thereby forming a "triplet" structure. Although the influence of the wake generated by the first turbine decayed with downstream distance, the mutated wakes from the second turbine continued to influence the downstream wake. Two mirror-image angles of wind directions that yielded partial wakes impinging on the downstream turbines yielded asymmetric wake profiles that could be attributed to the changing flow directions in the rotor plane induced by the Coriolis force. In conclusion, the turbine wakes persisted for extended distances in the present study, which is a result of low aerodynamic surface roughness typically found in offshore conditions

  7. Small Wind Information (Postcard)

    SciTech Connect (OSTI)

    Not Available

    2011-08-01

    The U.S. Department of Energy's Wind Powering America initiative maintains a website section devoted to information about small wind turbines for homeowners, ranchers, and small businesses. This postcard is a marketing piece that stakeholders can provide to interested parties; it will guide them to this online resource.

  8. ATLAS: A Small, Light Weight, Time-Synchronized Wind-Turbine Data Acquistion System

    SciTech Connect (OSTI)

    Berg, D.E.; Robertson, P.; Zayas, J.

    1998-11-09

    Wind energy researchers at Sandia National Laboratories have developed a small, lightweight, time- synchronized, robust data acquisition system to acquire long-term time-series data on a wind turbine rotor. A commercial data acquisition module is utilized to acquire data simultaneously from multip!e strain-gauge, analog, and digital channels. Acquisition of rotor data at precisely the same times as acquisition of ground data is ensured by slaving the acquisition clocks on the rotor- based data unit and ground-based units to the Global Positioning Satellite (GPS) system with commercial GPS receiver units and custom-built and programmed programmable logic devices. The acquisition clocks will remain synchronized within two microseconds indefinitely. Field tests have confirmed that synchronization can be maintained at rotation rates in excess of 350 rpm, Commercial spread-spectrum radio modems are used to transfer the rotor data to a ground- based computer concurrently with data acquisition, permitting continuous acquisition of data over a period of several hours, days or even weeks.

  9. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2006-10-10

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  10. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2007-02-27

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  11. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-07-11

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  12. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett Lee; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-09-19

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  13. The WEI6K, a 6-kW 7-m Small Wind Turbine: Final Technical Report

    SciTech Connect (OSTI)

    Wetzel, Kyle K.; McCleer, Patrick J.; Hahlbeck, Edwin C.; DOE Project Office - Keith Bennett

    2006-07-21

    This project was selected by the U.S. Department of Energy under a DOE solicitation “Low Wind Speed Technology for Small Turbine Development.” The objective of this project has been to design a new small wind turbine with improved cost, reliability and performance in grid-connected residential and small business applications, in order to achieve the overall DOE goal of cost effectiveness in Class 3 wind resources that can now be achieved in Class 5 resources. The scope of work for this project has been to complete the preliminary design of an improved small wind turbine, including preliminary loads and strength analyses; analysis and design of all major components; systems integration and structural dynamic analysis; estimation of life-cycle cost of energy; and design documentation and review. The project did not entail hardware fabrication or testing. The WEI6K Turbine resulting from this project is an upwind horizontal-axis wind turbine rated at 6 kW. It features a 3-blade 7-m diameter rotor. The generator is a direct-drive permanent magnet synchronous machine generating 3-phase power at 240 VAC. The turbine is maintained oriented in to the wind via active yaw control using electromechanical servos. Power is regulated with active blade pitch control. The turbine is presently designed to be placed on a 100-foot (30m) tower. The turbine is predicted to generate electricity at a levelized cost of energy (COE) between 7.3 and 8.9 ¢/kWh at an IEC Class II site, with an average wind speed of 8.5 m/s at hub height, depending upon whether the customer uses a guyed truss tower (the lower figure) or a monopole tower. For the NREL Reference Site, with a mean wind speed of 5.35 m/s at 10 m height, the turbine would generate at a levelized cost of energy of between 9.7 and 11.9 ¢/kWh. The lowest of these numbers is presently competitive with retail electricity rates in most of the country. The 8.9 ¢/kWh is still competitive with retail rates in many regions of the

  14. Wind Turbine Generator System Power Performance Test Report for the ARE442 Wind Turbine

    SciTech Connect (OSTI)

    van Dam, J.; Jager, D.

    2010-02-01

    This report summarizes the results of a power performance test that NREL conducted on the ARE 442 wind turbine. This test was conducted in accordance with the International Electrotechnical Commission's (IEC) standard, Wind Turbine Generator Systems Part 12: Power Performance Measurements of Electricity Producing Wind Turbines, IEC 61400-12-1 Ed.1.0, 2005-12. However, because the ARE 442 is a small turbine as defined by IEC, NREL also followed Annex H that applies to small wind turbines. In these summary results, wind speed is normalized to sea-level air density.

  15. Vertical axis wind turbines

    DOE Patents [OSTI]

    Krivcov, Vladimir; Krivospitski, Vladimir; Maksimov, Vasili; Halstead, Richard; Grahov, Jurij

    2011-03-08

    A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.

  16. Wind Turbine System State Awareness

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2011-02-08

    Researchers at the Los Alamos National Laboratory Intelligent Wind Turbine Program are developing a multi-physics modeling approach for the analysis of wind turbines in the presence of realistic wind loading....

  17. Testing Small Wind Turbines at the National Renewable Energy Laboratory (NREL) (Poster)

    SciTech Connect (OSTI)

    Sinclair, K.; Bowen, A.

    2008-06-01

    WindPower 2008 conference sponsored by AWEA held in Houston, Texas on June 1-4, 2008. This poster describes four small wind electric systems that were tested to IEC and AWEA standards at NREL's NWTC.

  18. Small Wind Guidebook/Introduction | Open Energy Information

    Open Energy Info (EERE)

    Wind GuidebookIntroduction < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook WindTurbine-icon.png...

  19. Category:Wind turbine | Open Energy Information

    Open Energy Info (EERE)

    Wind turbine Jump to: navigation, search Pages in category "Wind turbine" This category contains only the following page. W Wind turbine Retrieved from "http:en.openei.orgw...

  20. Pioneer Asia Wind Turbines | Open Energy Information

    Open Energy Info (EERE)

    Asia Wind Turbines Jump to: navigation, search Name: Pioneer Asia Wind Turbines Place: Madurai, Tamil Nadu, India Zip: 625 002 Sector: Wind energy Product: Madurai-based wind...

  1. Applied Materials Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Wind Turbine Jump to: navigation, search Name Applied Materials Wind Turbine Facility Applied Materials Sector Wind energy Facility Type Community Wind Facility Status In Service...

  2. Byers Auto Group: A Case Study Into The Economics, Zoning, and Overall Process of Installing Small Wind Turbines at Two Automotive Dealerships in Ohio (Presentation)

    SciTech Connect (OSTI)

    Sinclair, K.; Oteri, F.

    2011-05-01

    This presentation provides the talking points about a case study on the installation of a $600,000 small wind project, the installation process, estimated annual energy production and percentage of energy needs met by the turbines.

  3. Byers Auto Group: A Case Study Into The Economics, Zoning, and Overall Process of Installing Small Wind Turbines at Two Automotive Dealerships in Ohio

    SciTech Connect (OSTI)

    Oteri, F.; Sinclair, K.

    2011-11-01

    This paper provides the talking points about a case study on the installation of a $600,000 small wind project, the installation process, estimated annual energy production and percentage of energy needs met by the turbines.

  4. Airborne Wind Turbine

    SciTech Connect (OSTI)

    2010-09-01

    Broad Funding Opportunity Announcement Project: Makani Power is developing an Airborne Wind Turbine (AWT) that eliminates 90% of the mass of a conventional wind turbine and accesses a stronger, more consistent wind at altitudes of near 1,000 feet. At these altitudes, 85% of the country can offer viable wind resources compared to only 15% accessible with current technology. Additionally, the Makani Power wing can be economically deployed in deep offshore waters, opening up a resource which is 4 times greater than the entire U.S. electrical generation capacity. Makani Power has demonstrated the core technology, including autonomous launch, land, and power generation with an 8 meter wingspan, 20 kW prototype. At commercial scale, Makani Power aims to develop a 600 kW, 28 meter wingspan product capable of delivering energy at an unsubsidized cost competitive with coal, the current benchmark for low-cost power.

  5. Tornado type wind turbines

    DOE Patents [OSTI]

    Hsu, Cheng-Ting

    1984-01-01

    A tornado type wind turbine has a vertically disposed wind collecting tower with spaced apart inner and outer walls and a central bore. The upper end of the tower is open while the lower end of the structure is in communication with a wind intake chamber. An opening in the wind chamber is positioned over a turbine which is in driving communication with an electrical generator. An opening between the inner and outer walls at the lower end of the tower permits radially flowing air to enter the space between the inner and outer walls while a vertically disposed opening in the wind collecting tower permits tangentially flowing air to enter the central bore. A porous portion of the inner wall permits the radially flowing air to interact with the tangentially flowing air so as to create an intensified vortex flow which exits out of the top opening of the tower so as to create a low pressure core and thus draw air through the opening of the wind intake chamber so as to drive the turbine.

  6. Wind turbine spoiler

    DOE Patents [OSTI]

    Sullivan, W.N.

    An aerodynamic spoiler system for a vertical axis wind turbine includes spoilers on the blades initially stored near the rotor axis to minimize drag. A solenoid latch adjacent the central support tower releases the spoilers and centrifugal force causes the spoilers to move up the turbine blades away from the rotor axis, thereby producing a braking effect and actual slowing of the associated wind turbine, if desired. The spoiler system can also be used as an infinitely variable power control by regulated movement of the spoilers on the blades over the range between the undeployed and fully deployed positions. This is done by the use of a suitable powered reel and cable located at the rotor tower to move the spoilers.

  7. Wind turbine spoiler

    DOE Patents [OSTI]

    Sullivan, William N.

    1985-01-01

    An aerodynamic spoiler system for a vertical axis wind turbine includes spoilers on the blades initially stored near the rotor axis to minimize drag. A solenoid latch adjacent the central support tower releases the spoilers and centrifugal force causes the spoilers to move up the turbine blades away from the rotor axis, thereby producing a braking effect and actual slowing of the associated wind turbine, if desired. The spoiler system can also be used as an infinitely variable power control by regulated movement of the spoilers on the blades over the range between the undeployed and fully deployed positions. This is done by the use of a suitable powered reel and cable located at the rotor tower to move the spoilers.

  8. Small Wind Guidebook/Image Library | Open Energy Information

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  9. Small Wind Guidebook/For More Information | Open Energy Information

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  10. NREL: Wind Research - Offshore Wind Turbine Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Offshore Wind Turbine Research Photo of a European offshore wind farm. Photo by Siemens For more than eight years, NREL has worked with the U.S. Department of Energy (DOE) to become an international leader in offshore wind energy research. NREL's offshore wind turbine research capabilities focus on critical areas that reflect the long-term needs of the industry and DOE. National Wind Technology Center (NWTC) researchers are perpetually exploring new wind and water power concepts, materials, and

  11. Wind Turbine Generator System Power Performance Test Report for the Entegrity EW50 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2011-05-01

    Report on the results of the power performance test that the National Renewable Energy Laboratory (NREL) conducted on Entegrity Wind System Inc.'s EW50 small wind turbine.

  12. Small Wind Site Assessment Guidelines

    SciTech Connect (OSTI)

    Olsen, Tim; Preus, Robert

    2015-09-01

    Site assessment for small wind energy systems is one of the key factors in the successful installation, operation, and performance of a small wind turbine. A proper site assessment is a difficult process that includes wind resource assessment and the evaluation of site characteristics. These guidelines address many of the relevant parts of a site assessment with an emphasis on wind resource assessment, using methods other than on-site data collection and creating a small wind site assessment report.

  13. Small Wind Guidebook/What Do Wind Systems Cost | Open Energy...

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  14. Small Wind Guidebook/Is There Enough Wind on My Site | Open Energy...

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  15. Small Wind Guidebook/How Do I Choose the Best Site for My Wind...

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  16. Middelgrunden Wind Turbine Cooperative | Open Energy Information

    Open Energy Info (EERE)

    Middelgrunden Wind Turbine Cooperative Jump to: navigation, search Name: Middelgrunden Wind Turbine Cooperative Place: Copenhagen, Denmark Zip: 2200 Sector: Wind energy Product:...

  17. Maglev Wind Turbine Technologies | Open Energy Information

    Open Energy Info (EERE)

    Maglev Wind Turbine Technologies Jump to: navigation, search Name: Maglev Wind Turbine Technologies Place: Sierra Vista, Arizona Zip: 85635 Sector: Wind energy Product: The new...

  18. Distributed Wind Turbines | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Last year, U.S. small wind turbines were exported to more than 50 countries, with top export markets identified as Italy, United Kingdom, Germany, Greece, China, Japan, Korea, ...

  19. An Exploration of Wind Energy & Wind Turbines

    K-12 Energy Lesson Plans and Activities Web site (EERE)

    This unit, which includes both a pre and post test on wind power engages students by allowing them to explore connections between wind energy and other forms of energy. Students learn about and examine the overall design of a wind turbine and then move forward with an assessment of the energy output as factors involving wind speed, direction and blade design are altered. Students are directed to work in teams to design, test and analyze components of a wind turbine such as blade length, blade shape, height of turbine, etc Student worksheets are included to facilitate the design and analysis process. Learning Goals: Below are the learning targets for the wind energy unit.

  20. Optimum propeller wind turbines

    SciTech Connect (OSTI)

    Sanderson, R.J.; Archer, R.D.

    1983-11-01

    The Prandtl-Betz-Theodorsen theory of heavily loaded airscrews has been adapted to the design of propeller windmills which are to be optimized for maximum power coefficient. It is shown that the simpler, light-loading, constant-area wake assumption can generate significantly different ''optimum'' performance and geometry, and that it is therefore not appropriate to the design of propeller wind turbines when operating in their normal range of high-tip-speed-to-wind-speed ratio. Design curves for optimum power coefficient are presented and an example of the design of a typical two-blade optimum rotor is given.

  1. Airfoils for wind turbine

    DOE Patents [OSTI]

    Tangler, James L.; Somers, Dan M.

    1996-01-01

    Airfoils for the blade of a wind turbine wherein each airfoil is characterized by a thickness in a range from 16%-24% and a maximum lift coefficient designed to be largely insensitive to roughness effects. The airfoils include a family of airfoils for a blade 15 to 25 meters in length, a family of airfoils for a blade 1 to 5 meters in length, and a family of airfoils for a blade 5 to 10 meters in length.

  2. Airfoils for wind turbine

    DOE Patents [OSTI]

    Tangler, J.L.; Somers, D.M.

    1996-10-08

    Airfoils are disclosed for the blade of a wind turbine wherein each airfoil is characterized by a thickness in a range from 16%-24% and a maximum lift coefficient designed to be largely insensitive to roughness effects. The airfoils include a family of airfoils for a blade 15 to 25 meters in length, a family of airfoils for a blade 1 to 5 meters in length, and a family of airfoils for a blade 5 to 10 meters in length. 10 figs.

  3. Scaled Wind Farm Technology (SWIFT) Facility Wind Turbine Controller...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (SWIFT) Facility Wind Turbine Controller Ground Testing - Sandia Energy Energy Search Icon ... Scaled Wind Farm Technology (SWIFT) Facility Wind Turbine Controller Ground Testing Home...

  4. Small Wind Guidebook/Things to Consider When Purchasing a Small...

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  5. Duration Test Report for the Entegrity EW50 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2012-12-01

    This report summarizes the results of a duration test that NREL conducted on the Entegrity EW50 wind turbine. This test was conducted in accordance with the International Electrotechnical Commissions' (IEC) standard, Wind Turbine Generator System Part 2: Design requirements for small wind turbines, IEC 61400-2 Ed.2.0, 2006-03.

  6. Category:Small Wind Guidebook Pages | Open Energy Information

    Open Energy Info (EERE)

    for Me Small Wind GuidebookState Information Portal S cont. Small Wind GuidebookThings to Consider When Purchasing a Small Wind Turbine Small Wind GuidebookWhat are the...

  7. Power Performance Test Report for the SWIFT Wind Turbine

    SciTech Connect (OSTI)

    Mendoza, I.; Hur, J.

    2012-12-01

    This report summarizes the results of a power performance test that NREL conducted on the SWIFT wind turbine. This test was conducted in accordance with the International Electrotechnical Commission's (IEC) standard, Wind Turbine Generator Systems Part 12: Power Performance Measurements of Electricity Producing Wind Turbines, IEC 61400-12-1 Ed.1.0, 2005-12. However, because the SWIFT is a small turbine as defined by IEC, NREL also followed Annex H that applies to small wind turbines. In these summary results, wind speed is normalized to sea-level air density.

  8. Federal Interagency Wind Turbine Radar Interference Mitigation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Federal Interagency Wind Turbine Radar Interference Mitigation Strategy Federal Interagency Wind Turbine Radar Interference Mitigation Strategy Cover of the Federal Interagency ...

  9. Federal Interagency Wind Turbine Radar Interference Mitigation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Interagency Wind Turbine Radar Interference Mitigation Strategy January 2016 This report ... First, the authors would like to thank the entire Wind Turbine Radar Interference Working ...

  10. Collegiate Wind Competition Turbines go Blade-to-Blade in Wind Tunnel Tests

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    at WINDPOWER | Department of Energy Turbines go Blade-to-Blade in Wind Tunnel Tests at WINDPOWER Collegiate Wind Competition Turbines go Blade-to-Blade in Wind Tunnel Tests at WINDPOWER March 28, 2014 - 5:11pm Addthis This wind tunnel constructed by NREL engineers will test the small wind turbines designed by 10 university teams competing in DOE's Collegiate Wind Competition. This wind tunnel constructed by NREL engineers will test the small wind turbines designed by 10 university teams

  11. Technical Progress Report, Phase II Inventory of Wind Green Pricing report Fact Sheets Liability Insurance for Small Wind Energy Systems Zoning Issues for Small Wind Systems Small Wind System Slideshow Small Wind State by State Information Wind Power and Electric transmission Policy: Constructs, Constraints and Critical Path

    SciTech Connect (OSTI)

    Swisher, Randall Holt, Edward Wooley, David

    2002-05-08

    Status report on Green power Factsheets and product database. Small wind turbines as a distributed power

  12. Duration Test Report for the Viryd CS8 Wind Turbine

    SciTech Connect (OSTI)

    Roadman, J.; Murphy, M.; van Dam, J.

    2013-06-01

    This report summarizes the results of a duration noise test that the National Renewable Energy Laboratory (NREL) conducted on the Viryd CS8 wind turbine. This test was conducted in accordance with Clause 9.4 of the International Electrotechnical Commission's (IEC) standard, Wind turbines - Part 2: Design requirements for small wind turbines, IEC 61400-2 Ed. 2.0:2006-03. NREL researchers evaluated the turbine based on structural integrity and material degradation, quality of environmental protection, and dynamic behavior.

  13. Archbold Local Schools Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Archbold Local Schools Wind Turbine Jump to: navigation, search Name Archbold Local Schools Wind Turbine Facility Archbold Local Schools Wind Turbine Sector Wind energy Facility...

  14. Conneaut Middle School Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Conneaut Middle School Wind Turbine Jump to: navigation, search Name Conneaut Middle School Wind Turbine Facility Conneaut Middle School Wind Turbine Sector Wind energy Facility...

  15. Conneaut Wastewater Facility Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Wastewater Facility Wind Turbine Jump to: navigation, search Name Conneaut Wastewater Facility Wind Turbine Facility Conneaut Wastewater Facility Wind Turbine Sector Wind energy...

  16. Woods Hole Research Center Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    Hole Research Center Wind Turbine Jump to: navigation, search Name Woods Hole Research Center Wind Turbine Facility Woods Hole Research Center Wind Turbine Sector Wind energy...

  17. Liberty Turbine Test Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Turbine Test Wind Farm Jump to: navigation, search Name Liberty Turbine Test Wind Farm Facility Liberty Turbine Test Sector Wind energy Facility Type Commercial Scale Wind Facility...

  18. The Inside of a Wind Turbine

    Broader source: Energy.gov [DOE]

    Wind turbines harness the power of the wind and use it to generate electricity. Simply stated, a wind turbine works the opposite of a fan. Instead of using electricity to make wind, like a fan,...

  19. Dynamic Models for Wind Turbines and Wind Power Plants

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Each of these models includes representations of general turbine aerodynamics, the ... 9 1.1.2 Wind power integration and wind turbine modeling ......

  20. Wind Turbine Generator System Duration Test Report for the Mariah Power Windspire Wind Turbine

    SciTech Connect (OSTI)

    Huskey, A.; Bowen, A.; Jager, D.

    2010-05-01

    This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. In total, five turbines are being tested at the National Wind Technology Center (NWTC) as a part of the first round of this project. Duration testing is one of up to five tests that may be performed on the turbines. Other tests include power performance, safety and function, noise, and power quality tests. NWTC testing results provide manufacturers with reports that may be used to meet part of small wind turbine certification requirements. This duration test report focuses on the Mariah Power Windspire wind turbine.

  1. Wind Turbine Safety and Function Test Report for the ARE 442 Wind Turbine

    SciTech Connect (OSTI)

    van Dam, J.; Baker, D.; Jager, D.

    2010-02-01

    This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. In total, four turbines were tested at the National Wind Technology Center (NWTC) as a part of this project. Safety and function testing is one of up to five tests that were performed on the turbines, including power performance, duration, noise, and power quality tests. Test results provide manufacturers with reports that can be used for small wind turbine certification. The test equipment includes an ARE 442 wind turbine mounted on a 100-ft free-standing lattice tower. The system was installed by the NWTC Site Operations group with guidance and assistance from Abundant Renewable Energy.

  2. Wind tunnel performance data for the Darrieus wind turbine with...

    Office of Scientific and Technical Information (OSTI)

    Wind tunnel performance data for the Darrieus wind turbine with NACA 0012 blades Citation Details In-Document Search Title: Wind tunnel performance data for the Darrieus wind ...

  3. Jet spoiler arrangement for wind turbine

    DOE Patents [OSTI]

    Cyrus, J.D.; Kadlec, E.G.; Klimas, P.C.

    1983-09-15

    An air jet spoiler arrangement is provided for a Darrieus-type vertical axis wind-powered turbine. Air is drawn into hollow turbine blades through air inlets at the end thereof and is ejected in the form of air jets through small holes or openings provided along the lengths of the blades. The air jets create flow separation at the surfaces of the turbine blades, thereby including stall conditions and reducing the output power. A feedback control unit senses the power output of the turbine and controls the amount of air drawn into the air inlets accordingly.

  4. Jet spoiler arrangement for wind turbine

    DOE Patents [OSTI]

    Cyrus, Jack D.; Kadlec, Emil G.; Klimas, Paul C.

    1985-01-01

    An air jet spoiler arrangement is provided for a Darrieus-type vertical axis wind-powered turbine. Air is drawn into hollow turbine blades through air inlets at the ends thereof and is ejected in the form of air jets through small holes or openings provided along the lengths of the blades. The air jets create flow separation at the surfaces of the turbine blades, thereby inducing stall conditions and reducing the output power. A feedback control unit senses the power output of the turbine and controls the amount of air drawn into the air inlets accordingly.

  5. Wind turbine rotor aileron

    DOE Patents [OSTI]

    Coleman, Clint; Kurth, William T.

    1994-06-14

    A wind turbine has a rotor with at least one blade which has an aileron which is adjusted by an actuator. A hinge has two portions, one for mounting a stationary hinge arm to the blade, the other for coupling to the aileron actuator. Several types of hinges can be used, along with different actuators. The aileron is designed so that it has a constant chord with a number of identical sub-assemblies. The leading edge of the aileron has at least one curved portion so that the aileron does not vent over a certain range of angles, but vents if the position is outside the range. A cyclic actuator can be mounted to the aileron to adjust the position periodically. Generally, the aileron will be adjusted over a range related to the rotational position of the blade. A method for operating the cyclic assembly is also described.

  6. Wind Turbine Generator System Power Quality Test Report for the Gaia Wind 11-kW Wind Turbine

    SciTech Connect (OSTI)

    Curtis, A.; Gevorgian, V.

    2011-07-01

    This report details the power quality test on the Gaia Wind 11-kW Wind Turbine as part of the U.S. Department of Energy's Independent Testing Project. In total five turbines are being tested as part of the project. Power quality testing is one of up to five test that may be performed on the turbines including power performance, safety and function, noise, and duration tests. The results of the testing provide manufacturers with reports that may be used for small wind turbine certification.

  7. Distributed Wind Market Report: Small Turbines Lead to Big Growth in Exports

    Broader source: Energy.gov [DOE]

    Read more about how wind technology was deployed in distributed applications throughout the United States and abroad.

  8. Wind Turbine Generator System Duration Test Report for the ARE 442 Wind Turbine

    SciTech Connect (OSTI)

    van Dam, J.; Baker, D.; Jager, D.

    2010-05-01

    This test is being conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. In total, four turbines are being tested at the NWTC as a part of this project. Duration testing is one of up to 5 tests that may be performed on the turbines, including power performance, safety and function, noise, and power quality tests. The results of the testing provide manufacturers with reports that may be used for small wind turbine certification. The test equipment includes a grid connected ARE 442 wind turbine mounted on a 30.5 meter (100 ft) lattice tower manufactured by Abundant Renewable Energy. The system was installed by the NWTC Site Operations group with guidance and assistance from Abundant Renewable Energy.

  9. Wind Turbine Basics | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    This video explains the basics of how wind turbines operate to produce clean power from an abundant, renewable resource-the wind. Text Version Wind turbine assembly Although all ...

  10. Scale Models and Wind Turbines

    K-12 Energy Lesson Plans and Activities Web site (EERE)

    As wind turbines and wind farms become larger to take advantage of the economies of scale and increased wind speeds at higher altitudes, their impact in the locales where they are sited becomes more dramatic. One place this is especially contentious is in the offshore environment of the Northeast. This lesson explores scale models and the issues surrounding models and their accuracy when developing a large wind farm. Worksheets are included.

  11. Validation of Simplified Load Equations through Loads Measurement and Modeling of a Small Horizontal-Axis Wind Turbine Tower; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Dana, S.; Damiani, R.; vanDam, J.

    2015-05-18

    As part of an ongoing effort to improve the modeling and prediction of small wind turbine dynamics, NREL tested a small horizontal axis wind turbine in the field at the National Wind Technology Center (NWTC). The test turbine was a 2.1-kW downwind machine mounted on an 18-meter multi-section fiberglass composite tower. The tower was instrumented and monitored for approximately 6 months. The collected data were analyzed to assess the turbine and tower loads and further validate the simplified loads equations from the International Electrotechnical Commission (IEC) 61400-2 design standards. Field-measured loads were also compared to the output of an aeroelastic model of the turbine. Ultimate loads at the tower base were assessed using both the simplified design equations and the aeroelastic model output. The simplified design equations in IEC 61400-2 do not accurately model fatigue loads. In this project, we compared fatigue loads as measured in the field, as predicted by the aeroelastic model, and as calculated using the simplified design equations.

  12. Holy Name Central Catholic School Wind Turbine | Open Energy...

    Open Energy Info (EERE)

    Name Central Catholic School Wind Turbine Jump to: navigation, search Name Holy Name Central Catholic School Wind Turbine Facility Holy Name Central Catholic School Wind Turbine...

  13. International Turbine Research Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Turbine Research Wind Farm Jump to: navigation, search Name International Turbine Research Wind Farm Facility International Turbine Research Sector Wind energy Facility Type...

  14. Airfoils for wind turbine

    DOE Patents [OSTI]

    Tangler, James L.; Somers, Dan M.

    2000-01-01

    Airfoils for the tip and mid-span regions of a wind turbine blade have upper surface and lower surface shapes and contours between a leading edge and a trailing edge that minimize roughness effects of the airfoil and provide maximum lift coefficients that are largely insensitive to roughness effects. The airfoil in one embodiment is shaped and contoured to have a thickness in a range of about fourteen to seventeen percent, a Reynolds number in a range of about 1,500,000 to 2,000,000, and a maximum lift coefficient in a range of about 1.4 to 1.5. In another embodiment, the airfoil is shaped and contoured to have a thickness in a range of about fourteen percent to sixteen percent, a Reynolds number in a range of about 1,500,000 to 3,000,000, and a maximum lift coefficient in a range of about 0.7 to 1.5. Another embodiment of the airfoil is shaped and contoured to have a Reynolds in a range of about 1,500,000 to 4,000,000, and a maximum lift coefficient in a range of about 1.0 to 1.5.

  15. Energy Department Helps Manufacturers of Small and Mid-Size Wind...

    Office of Environmental Management (EM)

    turbines to improve their turbine design and manufacturing processes while reducing costs and improving efficiency as they work toward certification. Photo of a small wind turbine. ...

  16. Small Wind Guidebook/Case Studies | Open Energy Information

    Open Energy Info (EERE)

    search Case Studies The Small Wind Guidebook's collection of distributed wind turbine case studies is intended to reflect project-specific details for a variety of...

  17. Sandia Wind Turbine Loads Database

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Sandia Wind Turbine Loads Database is divided into six files, each corresponding to approximately 16 years of simulation. The files are text files with data in columnar format. The 424MB zipped file containing six data files can be downloaded by the public. The files simulate 10-minute maximum loads for the NREL 5MW wind turbine. The details of the loads simulations can be found in the paper: “Decades of Wind Turbine Loads Simulations”, M. Barone, J. Paquette, B. Resor, and L. Manuel, AIAA2012-1288 (3.69MB PDF). Note that the site-average wind speed is 10 m/s (class I-B), not the 8.5 m/s reported in the paper.

  18. Sandia Wind Turbine Loads Database

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Sandia Wind Turbine Loads Database is divided into six files, each corresponding to approximately 16 years of simulation. The files are text files with data in columnar format. The 424MB zipped file containing six data files can be downloaded by the public. The files simulate 10-minute maximum loads for the NREL 5MW wind turbine. The details of the loads simulations can be found in the paper: Decades of Wind Turbine Loads Simulations, M. Barone, J. Paquette, B. Resor, and L. Manuel, AIAA2012-1288 (3.69MB PDF). Note that the site-average wind speed is 10 m/s (class I-B), not the 8.5 m/s reported in the paper.

  19. Siting guidelines for utility application of wind turbines. Final report

    SciTech Connect (OSTI)

    Pennell, W.T.

    1983-01-01

    Utility-oriented guidelines are described for identifying viable sites for wind turbines. Topics and procedures are also discussed that are important in carrying out a wind turbine siting program. These topics include: a description of the Department of Energy wind resource atlases; procedures for predicting wind turbine performance at potential sites; methods for analyzing wind turbine economics; procedures for estimating installation and maintenance costs; methods for anlayzing the distribution of wind resources over an area; and instrumentation for documenting wind behavior at potential sites. The procedure described is applicable to small and large utilities. Although the procedure was developed as a site-selection tool, it can also be used by a utility who wishes to estimate the potential for wind turbine penetration into its future generation mix.

  20. Energy 101: Wind Turbines - 2014 Update

    ScienceCinema (OSTI)

    None

    2014-06-05

    See how wind turbines generate clean electricity from the power of wind. The video highlights the basic principles at work in wind turbines, and illustrates how the various components work to capture and convert wind energy to electricity. This updated version also includes information on the Energy Department's efforts to advance offshore wind power. Offshore wind energy footage courtesy of Vestas.

  1. Energy 101: Wind Turbines - 2014 Update

    SciTech Connect (OSTI)

    2014-05-06

    See how wind turbines generate clean electricity from the power of wind. The video highlights the basic principles at work in wind turbines, and illustrates how the various components work to capture and convert wind energy to electricity. This updated version also includes information on the Energy Department's efforts to advance offshore wind power. Offshore wind energy footage courtesy of Vestas.

  2. Energy 101: Wind Turbines | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Turbines Energy 101: Wind Turbines Addthis Description See how wind turbines generate clean electricity from the power of the wind. This video highlights the various parts and mechanisms of a modern wind turbine. Text Version Below is the text version for the Energy 101: Wind Turbines video. The video opens with "Energy 101: Wind Turbines." This is followed by wooden windmills on farms. We've all seen those creaky, old windmills on farms. And although they may seem about as low-tech as

  3. Wind Turbine Generator System Acoustic Noise Test Report for the ARE 442 Wind Turbine

    SciTech Connect (OSTI)

    Huskey, A.; van Dam, J.

    2010-11-01

    This test was conducted on the ARE 442 as part of the U.S. Department of Energy's (DOE's) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. In total, five turbines are being tested at the National Wind Technology Center (NWTC) as a part of this project. Acoustic noise testing is one of up to five tests that may be performed on the turbines, including duration, safety and function, power performance, and power quality tests. The acoustic noise test was conducted to the IEC 61400-11 Edition 2.1.

  4. Small Wind Guidebook/Where Can I Find Installation and Maintenance...

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  5. Small Wind Guidebook/Can I Go Off-Grid | Open Energy Information

    Open Energy Info (EERE)

    & OUTREACHSmall Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  6. Gamesa Wind Turbines Pvt Ltd | Open Energy Information

    Open Energy Info (EERE)

    Gamesa Wind Turbines Pvt Ltd Jump to: navigation, search Name: Gamesa Wind Turbines Pvt. Ltd. Place: Chennai, Tamil Nadu, India Sector: Wind energy Product: Chennai-based wind...

  7. Microsoft Word - Increased Strength in Wind Turbine Blades through...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Increased Strength in Wind Turbine Blades through Innovative Structural ... design approach is applied to wind turbine blades, manufacturing and structural ...

  8. Small Wind Conference 2015

    Broader source: Energy.gov [DOE]

    The Small Wind Conference brings together small wind installers, site assessors, manufacturers, dealers and distributors, supply chain stakeholders, educators, public benefits program managers, and...

  9. Vertical axis wind turbine airfoil

    DOE Patents [OSTI]

    Krivcov, Vladimir; Krivospitski, Vladimir; Maksimov, Vasili; Halstead, Richard; Grahov, Jurij Vasiljevich

    2012-12-18

    A vertical axis wind turbine airfoil is described. The wind turbine airfoil can include a leading edge, a trailing edge, an upper curved surface, a lower curved surface, and a centerline running between the upper surface and the lower surface and from the leading edge to the trailing edge. The airfoil can be configured so that the distance between the centerline and the upper surface is the same as the distance between the centerline and the lower surface at all points along the length of the airfoil. A plurality of such airfoils can be included in a vertical axis wind turbine. These airfoils can be vertically disposed and can rotate about a vertical axis.

  10. Nature's Classroom Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    References "Wind Energy Data and Information Gateway (WENDI)" Retrieved from "http:en.openei.orgwindex.php?titleNature%27sClassroomWindTurbine&oldid585985...

  11. Wind Turbine Condition Monitoring, Reliability Database, and...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wind Turbine Gearbox Reliability Database, Condition Monitoring, and O&M Research Update ... (OEMs), gearbox rebuild shops, wind plant owneroperators, and consulting ...

  12. Controlling Wind Turbines for Secondary Frequency Regulation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Controlling Wind Turbines for Secondary Frequency Regulation: An Analysis of AGC ... Workshop on Large-Scale Integration of Wind Power Into Power Systems as Well as on ...

  13. Federal Interagency Wind Turbine Radar Interference Mitigation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Interagency Wind Turbine Radar Interference Mitigation Strategy January 2016 This report ... from the advice and comments of two wind industry and trade association ...

  14. Wind Turbine Generator System Duration Test Report for the Gaia-Wind 11 kW Wind Turbine

    SciTech Connect (OSTI)

    Huskey, A.; Bowen, A.; Jager, D.

    2010-09-01

    This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. In total, five turbines are being tested at the National Renewable Energy Laboratory's (NRELs) National Wind Technology Center (NWTC) as a part of this project. Duration testing is one of up to five tests that may be performed on the turbines, including power performance, safety and function, noise, and power quality tests. The results of the testing will provide the manufacturers with reports that may be used for small wind turbine certification. The test equipment includes a Gaia-Wind 11 kW wind turbine mounted on an 18 m monopole tower. Gaia-Wind Ltd. manufactured the turbine in Denmark, although the company is based in Scotland. The system was installed by the NWTC Site Operations group with guidance and assistance from Gaia-Wind.

  15. Built Environment Wind Turbine Roadmap

    SciTech Connect (OSTI)

    Smith, J.; Forsyth, T.; Sinclair, K.; Oteri, F.

    2012-11-01

    The market currently encourages BWT deployment before the technology is ready for full-scale commercialization. To address this issue, industry stakeholders convened a Rooftop and Built-Environment Wind Turbine Workshop on August 11 - 12, 2010, at the National Wind Technology Center, located at the U.S. Department of Energy’s National Renewable Energy Laboratory in Boulder, Colorado. This report summarizes the workshop.

  16. Sandia Wind Turbine Loads Database

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wind Turbine Loads Database - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced

  17. NREL: Wind Research - NREL and Clemson University Put Wind Turbine...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    NREL and Clemson University Put Wind Turbine Drivetrains to the Test A photo of a large dynamometer at the National Wind Technology Center. NREL's 5-megawatt dynamometer test...

  18. Duration Test Report for the Ventera VT10 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2013-06-01

    This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small wind turbines. Five turbines were tested at the National Wind Technology Center (NWTC) at the National Renewable Energy Laboratory (NREL) as a part of round one of this project. Duration testing is one of up to five tests that may be performed on the turbines, including power performance, safety and function, noise, and power quality. Test results will provide manufacturers with reports that can be used to fulfill part of the requirements for small wind turbine certification. The test equipment included a grid-connected Ventera Energy Corporation VT10 wind turbine mounted on an 18.3-m (60-ft) self-supporting lattice tower manufactured by Rohn.

  19. wind-turbine composites

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ...

  20. Built-Environment Wind Turbine Roadmap

    SciTech Connect (OSTI)

    Smith, J.; Forsyth, T.; Sinclair, K.; Oteri, F.

    2012-11-01

    Although only a small contributor to total electricity production needs, built-environment wind turbines (BWTs) nonetheless have the potential to influence the public's consideration of renewable energy, and wind energy in particular. Higher population concentrations in urban environments offer greater opportunities for project visibility and an opportunity to acquaint large numbers of people to the advantages of wind projects on a larger scale. However, turbine failures will be equally visible and could have a negative effect on public perception of wind technology. This roadmap provides a framework for achieving the vision set forth by the attendees of the Built-Environment Wind Turbine Workshop on August 11 - 12, 2010, at the U.S. Department of Energy's National Renewable Energy Laboratory. The BWT roadmap outlines the stakeholder actions that could be taken to overcome the barriers identified. The actions are categorized as near-term (0 - 3 years), medium-term (4 - 7 years), and both near- and medium-term (requiring immediate to medium-term effort). To accomplish these actions, a strategic approach was developed that identifies two focus areas: understanding the built-environment wind resource and developing testing and design standards. The authors summarize the expertise and resources required in these areas.

  1. Cogging Torque Reduction in a Permanent Magnet Wind Turbine Generator: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Green, J.

    2002-01-01

    In this paper, we investigate three design options to minimize cogging torque: uniformity of air gap, pole width, and skewing. Although the design improvement is intended for small wind turbines, it is also applicable to larger wind turbines.

  2. Duration Test Report for the SWIFT Wind Turbine

    SciTech Connect (OSTI)

    Mendoza, I.; Hur, J.

    2013-01-01

    This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. Three turbines where selected for testing at the National Wind Technology Center (NWTC) as a part of round two of the Small Wind Turbine Independent Testing project. Duration testing is one of up to 5 tests that may be performed on the turbines. Other tests include power performance, safety and function, noise, and power quality. The results of the testing will provide the manufacturers with reports that may be used for small wind turbine certification.

  3. Safety and Function Test Report for the SWIFT Wind Turbine

    SciTech Connect (OSTI)

    Mendoza, I.; Hur, J.

    2013-01-01

    This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project. This project was established to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. Three turbines where selected for testing at the National Wind Technology Center (NWTC) as a part of round two of the Small Wind Turbine Independent Testing project. Safety and Function testing is one of up to 5 tests that may be performed on the turbines. Other tests include power performance, duration, noise, and power quality. The results of the testing will provide the manufacturers with reports that may be used for small wind turbine certification.

  4. Wind turbine performance under icing conditions

    SciTech Connect (OSTI)

    Jasinski, W.J.; Noe, S.C.; Selig, M.S.; Bragg, M.B.

    1998-02-01

    The effects of rime ice on horizontal axis wind turbine performance were estimated. For typical supercooled fog conditions found in cold northern regions, four rime ice accretions on the S809 wind turbine airfoil were predicted using the NASA LEWICE code. The resulting airfoil/ice profile combinations were wind tunnel tested to obtain the lift, drag, and pitching moment characteristics over the Reynolds number range 1--2 {times} 10{sup 6}. These data were used in the PROPID wind turbine performance prediction code to predict the effects of rime ice on a 450-kW rated-power, 28.7-m diameter turbine operated under both stall-regulated and variable-speed/variable-pitch modes. Performance losses on the order of 20% were observed for the variable-speed/variable-pitch rotor. For the stall-regulated rotor, however, a relatively small rime ice profile yielded significantly larger performance losses. For a larger 0.08c-long rime ice protrusion, however, the rated peak power was exceeded by 16% because at high angles the rime ice shape acted like a leading edge flap, thereby increasing the airfoil C{sub l,max} and delaying stall.

  5. Energy 101: Wind Turbines | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy 101: Wind Turbines Energy 101: Wind Turbines Addthis Description See how wind turbines generate clean electricity from the power of the wind. Highlighted are the various parts and mechanisms of a modern wind turbine. Duration 2:16 Topic Tax Credits, Rebates, Savings Wind Energy Economy Credit Energy Department Video MR. : We've all seen those creaky old windmills on farms, and although they may seem about as low-tech as you can get, those old windmills are the predecessors for new modern

  6. Wind Turbine Radar Interference Mitigation Working Group Releases New Report

    Office of Energy Efficiency and Renewable Energy (EERE)

    While wind energy presents many benefits, spinning wind turbines can interfere with weather, air traffic control, and air surveillance radar systems. As advances in wind technology enable turbines...

  7. Minnkota Power Cooperative Wind Turbine (Petersburg) | Open Energy...

    Open Energy Info (EERE)

    Minnkota Power Cooperative Wind Turbine (Petersburg) Jump to: navigation, search Name Minnkota Power Cooperative Wind Turbine (Petersburg) Facility Minnkota Power Cooperative Wind...

  8. Tianjin Dongqi Wind Turbine Blade Engineering Co Ltd | Open Energy...

    Open Energy Info (EERE)

    Dongqi Wind Turbine Blade Engineering Co Ltd Jump to: navigation, search Name: Tianjin Dongqi Wind Turbine Blade Engineering Co Ltd Place: Tianjin Municipality, China Sector: Wind...

  9. Wuxi Bamboo Wind Turbine Blade Technology Co Ltd | Open Energy...

    Open Energy Info (EERE)

    Bamboo Wind Turbine Blade Technology Co Ltd Jump to: navigation, search Name: Wuxi Bamboo Wind Turbine Blade Technology Co Ltd Place: Wuxi, Jiangsu Province, China Sector: Wind...

  10. Iskra Wind Turbine Manufacturers Ltd | Open Energy Information

    Open Energy Info (EERE)

    Iskra Wind Turbine Manufacturers Ltd Jump to: navigation, search Name: Iskra Wind Turbine Manufacturers Ltd Place: Nottingham, United Kingdom Sector: Wind energy Product: Iskra...

  11. Danish Wind Turbine Owners Association | Open Energy Information

    Open Energy Info (EERE)

    Turbine Owners Association Jump to: navigation, search Name: Danish Wind Turbine Owners' Association Place: Aarhus C, Denmark Zip: DK-8000 Sector: Wind energy Product: Danish Wind...

  12. Minnkota Power Cooperative Wind Turbine (Valley City) | Open...

    Open Energy Info (EERE)

    Valley City) Jump to: navigation, search Name Minnkota Power Cooperative Wind Turbine (Valley City) Facility Minnkota Power Cooperative Wind Turbine (Valley City) Sector Wind...

  13. FloDesign Wind Turbine Corporation | Open Energy Information

    Open Energy Info (EERE)

    FloDesign Wind Turbine Corporation Jump to: navigation, search Name: FloDesign Wind Turbine Corporation Place: Massachusetts Zip: 1095 Sector: Wind energy Product:...

  14. Method and apparatus for wind turbine braking

    DOE Patents [OSTI]

    Barbu, Corneliu; Teichmann, Ralph; Avagliano, Aaron; Kammer, Leonardo Cesar; Pierce, Kirk Gee; Pesetsky, David Samuel; Gauchel, Peter

    2009-02-10

    A method for braking a wind turbine including at least one rotor blade coupled to a rotor. The method includes selectively controlling an angle of pitch of the at least one rotor blade with respect to a wind direction based on a design parameter of a component of the wind turbine to facilitate reducing a force induced into the wind turbine component as a result of braking.

  15. Decades of Wind Turbine Load Simulation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Decades of Wind Turbine Load Simulation Matthew Barone ∗ , Joshua Paquette † , Brian Resor ‡ Sandia National Laboratories § , Albuquerque, NM 87185 Lance Manuel ¶ University of Texas, Austin, TX 78712 A high-performance computer was used to simulate ninety-six years of operation of a five megawatt wind turbine. Over five million aero-elastic simulations were performed, with each simulation consisting of wind turbine operation for a ten minute period in turbulent wind conditions. These

  16. Adaptive Pitch Control for Variable Speed Wind Turbines - Energy...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    In the early development of wind energy, the majority of wind turbines or wind turbine ... In most cases, wind turbine pitch angles can be adjusted to control the operation of the ...

  17. On the Fatigue Analysis of Wind Turbines

    SciTech Connect (OSTI)

    Sutherland, Herbert J.

    1999-06-01

    Modern wind turbines are fatigue critical machines that are typically used to produce electrical power from the wind. Operational experiences with these large rotating machines indicated that their components (primarily blades and blade joints) were failing at unexpectedly high rates, which led the wind turbine community to develop fatigue analysis capabilities for wind turbines. Our ability to analyze the fatigue behavior of wind turbine components has matured to the point that the prediction of service lifetime is becoming an essential part of the design process. In this review paper, I summarize the technology and describe the ''best practices'' for the fatigue analysis of a wind turbine component. The paper focuses on U.S. technology, but cites European references that provide important insights into the fatigue analysis of wind turbines.

  18. Wind Turbine Manufacturing Process Monitoring

    SciTech Connect (OSTI)

    Waseem Faidi; Chris Nafis; Shatil Sinha; Chandra Yerramalli; Anthony Waas; Suresh Advani; John Gangloff; Pavel Simacek

    2012-04-26

    To develop a practical inline inspection that could be used in combination with automated composite material placement equipment to economically manufacture high performance and reliable carbon composite wind turbine blade spar caps. The approach technical feasibility and cost benefit will be assessed to provide a solid basis for further development and implementation in the wind turbine industry. The program is focused on the following technology development: (1) Develop in-line monitoring methods, using optical metrology and ultrasound inspection, and perform a demonstration in the lab. This includes development of the approach and performing appropriate demonstration in the lab; (2) Develop methods to predict composite strength reduction due to defects; and (3) Develop process models to predict defects from leading indicators found in the uncured composites.

  19. Wind Turbine Generator System Acoustic Noise Test Report for the Gaia Wind 11-kW Wind Turbine

    SciTech Connect (OSTI)

    Huskey, A.

    2011-11-01

    This report details the acoustic noise test conducted on the Gaia-Wind 11-kW wind turbine at the National Wind Technology Center. The test turbine is a two- bladed, downwind wind turbine with a rated power of 11 kW. The test turbine was tested in accordance with the International Electrotechnical Commission standard, IEC 61400-11 Ed 2.1 2006-11 Wind Turbine Generator Systems -- Part 11 Acoustic Noise Measurement Techniques.

  20. Intelligent Wind Turbine Program - Energy Innovation Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wind Energy Wind Energy Find More Like This Return to Search Intelligent Wind Turbine Program Los Alamos National Laboratory Contact LANL About This Technology Technology Marketing SummaryA unique LANL research team composed of world experts in structural health monitoring, modeling and simulation, and prognostic decision making has established a strong capability in wind energy research. The intelligent wind-turbine project has resulted in a U.S. patent application and copyrighted software,

  1. Offshore Wind Turbines Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine Addendum 2

    SciTech Connect (OSTI)

    Aker, Pamela M.; Jones, Anthony M.; Copping, Andrea E.

    2011-03-01

    Additional modeling for offshore wind turbines, for proposed floating wind platforms to be deployed by University of Maine/DeepCwind.

  2. Robotic Wind Turbine Inspection | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Advances Wind Turbine Inspection Through Robotic Trials Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) GE Advances Wind Turbine Inspection Through Robotic Trials GE Global Research is advancing technology that will make the inspection of wind turbines faster and more reliable for customers. Currently, an inspector

  3. SCALING OF COMPOSITE WIND TURBINE BLADES FOR

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    COMPOSITE MATERIALS FOR MEGAWATT-SCALE WIND TURBINE BLADES: DESIGN CONSIDERATIONS AND ... Both VARTM and prepreg materials have particular design challenges for manufacturing ...

  4. Active Load Control Techniques for Wind Turbines

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Active Load Control Techniques for Wind Turbines Scott J. Johnson and C. P. "Case" van Dam Department of Mechanical and Aeronautical Engineering University of California One ...

  5. new wind-turbine controls algorithms

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, ... variable-pitch Vestas V27 turbines and two 60 m anemometer ...

  6. Advanced horizontal axis wind turbines in windfarms

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The wind turbine section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  7. NREL: Wind Research - Advanced Research Turbines

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and meteorological towers upwind are instrumented to collect data. The National Wind Technology Center (NWTC) uses two large turbines to conduct advanced controls research. ...

  8. Danish know-how rests on solid footings. [Wind turbine

    SciTech Connect (OSTI)

    Gipe, P.

    1983-01-01

    Twenty Danish companies are building 35 licensed wind machines. Such a level of activity would be surprising for a small country were it not for the fact that the Danes were first to use windmills to generate electricity. The design of the Riisager turbine and a new turbine using glass reinforced plastic rather than laminated wood is described. Danish manufacturers are hoping to spread their distinctive turbines across the United States.

  9. How to Build a Small Wind Energy Business: Lessons from California; Preprint

    SciTech Connect (OSTI)

    Sinclair, K.

    2007-07-01

    This paper highlights the experience of one small wind turbine installer in California that installed more than 1 MW of small wind capacity in 6 years.

  10. How Does a Wind Turbine Work?

    Broader source: Energy.gov [DOE]

    Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to...

  11. DOE Seeking Proposals to Advance Distributed Wind Turbine Technology...

    Broader source: Energy.gov (indexed) [DOE]

    up to 1,000 square meters improve their turbine designs and manufacturing processes to ... Manufacturing Process Upgrades; Turbine Certification (for wind turbines with ...

  12. SMART Wind Turbine Rotor: Data Analysis and Conclusions | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy SMART Wind Turbine Rotor: Data Analysis and Conclusions SMART Wind Turbine Rotor: Data Analysis and Conclusions Data analysis and conclusions from the SMART Rotor project, a wind turbine rotor with integrated trailing-edge flaps designed for active control of the rotor aerodynamics. SMART Wind Turbine Rotor: Data Analysis and Conclusions (2.47 MB) More Documents & Publications SMART Wind Turbine Rotor: Data Analysis and Conclusions SMART Wind Turbine Rotor: Design and Field Test

  13. An exploration of wind energy and wind turbines

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    that effect wind turbine design. Explain the goals of the following lab experiments. Review what practices make for good experimental design and the need to control...

  14. Upcoming Funding Opportunity to Develop Larger Wind Turbine Blades...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Upcoming Funding Opportunity to Develop Larger Wind Turbine Blades Upcoming Funding Opportunity to Develop Larger Wind Turbine Blades February 20, 2015 - 4:55pm Addthis On February...

  15. New Wind Turbine Dynamometer Test Facility Dedicated at NREL...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    New Wind Turbine Dynamometer Test Facility Dedicated at NREL November 19, 2013 Today, the ... dynamometer test, a powerful motor replaces the rotor and blades of a wind turbine. ...

  16. Transforming Wind Turbine Blade Mold Manufacturing with 3D Printing...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Transforming Wind Turbine Blade Mold Manufacturing with 3D Printing Transforming Wind Turbine Blade Mold Manufacturing with 3D Printing Addthis Description Innovation in the design ...

  17. Innovative Offshore Vertical-Axis Wind Turbine Rotors

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Offshore Vertical-Axis Wind Turbine Rotors - Sandia Energy Energy Search Icon Sandia Home ... Google + Vimeo Newsletter Signup SlideShare Innovative Offshore Vertical-Axis Wind Turbine ...

  18. Statistics Show Bearing Problems Cause the Majority of Wind Turbine...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Statistics Show Bearing Problems Cause the Majority of Wind Turbine Gearbox Failures Statistics Show Bearing Problems Cause the Majority of Wind Turbine Gearbox Failures September ...

  19. Hydrogen Storage in Wind Turbine Towers: Cost Analysis and Conceptual...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    in Wind Turbine Towers: Cost Analysis and Conceptual Design Hydrogen Storage in Wind Turbine Towers: Cost Analysis and Conceptual Design Preprint 34851.pdf (366.26 KB) More ...

  20. Aerodynamic Wind-Turbine Blade Design for the National Rotor...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wind-Turbine Blade Design for the National Rotor Testbed - Sandia Energy Energy Search ... Twitter Google + Vimeo Newsletter Signup SlideShare Aerodynamic Wind-Turbine Blade Design ...

  1. Transforming Wind Turbine Blade Mold Manufacturing with 3D Printing

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    WORKING TOGETHER TO BUILD A FASTER AND LEANER FUTURE FOR WIND TURBINE BLADE MANUFACTURING ... For the wind industry, 3D printing could transform turbine blade mold manufacturing, ...

  2. Wind Turbine Radar Interference Mitigation Working Group Releases...

    Broader source: Energy.gov (indexed) [DOE]

    Wind Turbine Radar Interference Mitigation Working Group to address these challenges. This new report lays out the plan for how the working group will address wind turbine radar ...

  3. New Modularization Framework Transforms FAST Wind Turbine Modeling...

    Broader source: Energy.gov (indexed) [DOE]

    an expanded version of its FAST wind turbine computer-aided engineering tool under a ... to analyze multimember offshore wind turbine substructures A new state-space ...

  4. Wind Turbine Scaling Enables Projects to Reach New Heights |...

    Broader source: Energy.gov (indexed) [DOE]

    chapter that focuses on trends in wind turbine nameplate capacity, hub height, rotor ... chapter that focuses on trends in wind turbine nameplate capacity, hub height, rotor ...

  5. Abstract - This paper describes the latest generic wind turbine

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    wind turbine generator models of types 3 and 4 developed for implementation in the Western Electricity Coordinating Council (WECC) base cases. Key Words - Generic wind turbine ...

  6. Analysis of Wind Turbine Simulation Models: Assessment of Simplified...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Analysis of Wind Turbine Simulation Models: Assessment of Simplified versus Complete ... Spain, September 10-12, 2015 ANALYSIS OF WIND TURBINE SIMULATION MODELS: ASSESSMENT OF ...

  7. SMART Wind Turbine Rotor: Design and Field Test | Department...

    Office of Environmental Management (EM)

    Design and Field Test SMART Wind Turbine Rotor: Design and Field Test This report documents the design, fabrication, and testing of the SMART Wind Turbine Rotor. This work ...

  8. Advanced Control Design and Testing for Wind Turbines at the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Control Design and Testing for Wind Turbines at the National Renewable Energy Laboratory: Preprint Advanced Control Design and Testing for Wind Turbines at the National Renewable ...

  9. Built-Environment Wind Turbines | Open Energy Information

    Open Energy Info (EERE)

    Turbines Jump to: navigation, search Built-environment wind turbine projects are wind energy projects that are constructed on, in, or near buildings. These projects present an...

  10. INTERAGENCY FIELD TEST & EVALUATION OF WIND TURBINE - RADAR INTERFEREN...

    Office of Environmental Management (EM)

    INTERAGENCY FIELD TEST & EVALUATION OF WIND TURBINE - RADAR INTERFERENCE MITIGATION TECHNOLOGIES INTERAGENCY FIELD TEST & EVALUATION OF WIND TURBINE - RADAR INTERFERENCE MITIGATION ...

  11. Nantong Casc Wanyuan Acciona Wind Turbine Manufacture Co Ltd...

    Open Energy Info (EERE)

    Casc Wanyuan Acciona Wind Turbine Manufacture Co Ltd NCWA Jump to: navigation, search Name: Nantong Casc Wanyuan Acciona Wind Turbine Manufacture Co Ltd (NCWA) Place: Nantong,...

  12. Beijing Goldwind Kechuang Wind Turbine Manufacturer | Open Energy...

    Open Energy Info (EERE)

    Goldwind Kechuang Wind Turbine Manufacturer Jump to: navigation, search Name: Beijing Goldwind Kechuang Wind Turbine Manufacturer Place: Beijing, Beijing Municipality, China Zip:...

  13. Indian Wind Turbine Manufacturers Association | Open Energy Informatio...

    Open Energy Info (EERE)

    Turbine Manufacturers Association Jump to: navigation, search Name: Indian Wind Turbine Manufacturers Association Place: Chennai, India Zip: 600 041 Sector: Wind energy Product:...

  14. Use of SCADA Data for Failure Detection in Wind Turbines

    SciTech Connect (OSTI)

    Kim, K.; Parthasarathy, G.; Uluyol, O.; Foslien, W.; Sheng, S.; Fleming, P.

    2011-10-01

    This paper discusses the use of existing wind turbine SCADA data for development of fault detection and diagnostic techniques for wind turbines.

  15. Advanced Wind Turbine Drivetrain Concepts. Workshop Report

    SciTech Connect (OSTI)

    none,

    2010-12-01

    This report presents key findings from the Department of Energy’s Advanced Drivetrain Workshop, held on June 29-30, 2010, to assess different advanced drivetrain technologies, their relative potential to improve the state-of-the-art in wind turbine drivetrains, and the scope of research and development needed for their commercialization in wind turbine applications.

  16. Lightning protection system for a wind turbine

    DOE Patents [OSTI]

    Costin, Daniel P.; Petter, Jeffrey K.

    2008-05-27

    In a wind turbine (104, 500, 704) having a plurality of blades (132, 404, 516, 744) and a blade rotor hub (120, 712), a lightning protection system (100, 504, 700) for conducting lightning strikes to any one of the blades and the region surrounding the blade hub along a path around the blade hub and critical components of the wind turbine, such as the generator (112, 716), gearbox (708) and main turbine bearings (176, 724).

  17. Community Wind Handbook/What Is a Small Community Wind Project...

    Open Energy Info (EERE)

    Specifications * Submit Permit Applications * Find an Installer * Purchase Equipment * Plan for Maintenance What Is a Small Community Wind Project? Three Excel 10S turbines on...

  18. Frequently Asked Questions on Small Wind Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Frequently Asked Questions on Small Wind Systems Frequently Asked Questions on Small Wind Systems Below are frequently asked questions related to using a small wind energy system to power your home. The frequently asked questions below will help you determine if a small wind energy system is practical for powering your home. What are the benefits to homeowners from using wind turbines? Is wind power practical for me? Is my site right? What about legal, environmental, and economic issues? Where

  19. Meteorological aspects of siting large wind turbines

    SciTech Connect (OSTI)

    Hiester, T.R.; Pennell, W.T.

    1981-01-01

    This report, which focuses on the meteorological aspects of siting large wind turbines (turbines with a rated output exceeding 100 kW), has four main goals. The first is to outline the elements of a siting strategy that will identify the most favorable wind energy sites in a region and that will provide sufficient wind data to make responsible economic evaluations of the site wind resource possible. The second is to critique and summarize siting techniques that were studied in the Department of Energy (DOE) Wind Energy Program. The third goal is to educate utility technical personnel, engineering consultants, and meteorological consultants (who may have not yet undertaken wind energy consulting) on meteorological phenomena relevant to wind turbine siting in order to enhance dialogues between these groups. The fourth goal is to minimize the chances of failure of early siting programs due to insufficient understanding of wind behavior.

  20. Active load control techniques for wind turbines.

    SciTech Connect (OSTI)

    van Dam, C.P.; Berg, Dale E.; Johnson, Scott J.

    2008-07-01

    This report provides an overview on the current state of wind turbine control and introduces a number of active techniques that could be potentially used for control of wind turbine blades. The focus is on research regarding active flow control (AFC) as it applies to wind turbine performance and loads. The techniques and concepts described here are often described as 'smart structures' or 'smart rotor control'. This field is rapidly growing and there are numerous concepts currently being investigated around the world; some concepts already are focused on the wind energy industry and others are intended for use in other fields, but have the potential for wind turbine control. An AFC system can be broken into three categories: controls and sensors, actuators and devices, and the flow phenomena. This report focuses on the research involved with the actuators and devices and the generated flow phenomena caused by each device.

  1. Loads Analysis of Several Offshore Floating Wind Turbine Concepts

    SciTech Connect (OSTI)

    Robertson, A. N.; Jonkman, J. M.

    2011-10-01

    This paper presents a comprehensive dynamic-response analysis of six offshore floating wind turbine concepts.

  2. Advanced Wind Turbine Controls Reduce Loads (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-03-01

    NREL's National Wind Technology Center provides the world's only dedicated turbine controls testing platforms.

  3. Energy 101: Wind Turbines - 2014 Update | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Turbines - 2014 Update Energy 101: Wind Turbines - 2014 Update Addthis Description See how wind turbines generate clean electricity from the power of wind. The video highlights the basic principles at work in wind turbines, and illustrates how the various components work to capture and convert wind energy to electricity. This updated version also includes information on the Energy Department's efforts to advance offshore wind power. Topic Wind Text Version Below is the text version for the

  4. Smart Phone Technologies Reduce Risks to Eagles from Wind Turbines...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Eagles are Making Wind Turbines Safer for Birds PNNL Reviews Wildlife-Interaction Monitoring for Offshore Wind Farms - Technology Hybrids Show Best Potential Mitigating Wind-Radar ...

  5. Improved diffuser for augmenting a wind turbine

    DOE Patents [OSTI]

    Foreman, K.M.; Gilbert, B.L.

    A diffuser for augmenting a wind turbine having means for energizing the boundary layer at several locations along the diffuser walls is improved by the addition of a short collar extending radially outward from the outlet of the diffuser.

  6. Wind Turbine Drivetrain Condition Monitoring - An Overview

    SciTech Connect (OSTI)

    Sheng, S; Veers, P.

    2011-10-01

    This paper provides an overview of wind turbine drivetrain condition monitoring based on presentations from a condition monitoring workshop organized by the National Renewable Energy Laboratory in 2009 and on additional references.

  7. Diffuser for augmenting a wind turbine

    DOE Patents [OSTI]

    Foreman, Kenneth M.; Gilbert, Barry L.

    1984-01-01

    A diffuser for augmenting a wind turbine having means for energizing the boundary layer at several locations along the diffuser walls is improved by the addition of a short collar extending radially outward from the outlet of the diffuser.

  8. Passively cooled direct drive wind turbine

    DOE Patents [OSTI]

    Costin, Daniel P.

    2008-03-18

    A wind turbine is provided that passively cools an electrical generator. The wind turbine includes a plurality of fins arranged peripherally around a generator house. Each of the fins being oriented at an angle greater than zero degrees to allow parallel flow of air over the fin. The fin is further tapered to allow a constant portion of the fin to extend beyond the air stream boundary layer. Turbulence initiators on the nose cone further enhance heat transfer at the fins.

  9. Siting: Wind Turbine/Radar Interference Mitigation (TSPEAR &...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Wind TurbineRadar Interference Mitigation (TSPEAR & IFT&E) HomeStationary PowerEnergy Conversion EfficiencyWind EnergySiting and Barrier MitigationSiting: Wind TurbineRadar ...

  10. Yituo Made Wind Turbine Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Yituo Made Wind Turbine Co Ltd Jump to: navigation, search Name: Yituo-Made Wind Turbine Co. Ltd. Place: Luoyang, Henan Province, China Zip: 471003 Sector: Wind energy Product: A...

  11. Wake Flow Simulations for a Mid-Sized Rim Driven Wind Turbine

    SciTech Connect (OSTI)

    Rob O. Hovsapian; Various

    2014-06-01

    The onshore land where wind farms with conventional wind turbines can be places is limited by various factors including a requirement for relatively high wind speed for turbines' efficient operations. Where such a requirement cannot be met, mid-and small-sized turbines can be a solution. In the current paper simulations for near and for wakes behind a mid-sized Rim Driven Wind Turbine developed by Keuka Energy LLC is analyzed. The purposes of this study is to better understand the wake structure for more efficient wind farm planning. Simulations are conducted with the commercial CFD software STARCCM+

  12. Future of Condition Monitoring for Wind Turbines | OpenEI Community

    Open Energy Info (EERE)

    Future of Condition Monitoring for Wind Turbines Home > Future of Condition Monitoring for Wind Turbines > Posts by term > Future of Condition Monitoring for Wind Turbines Content...

  13. Federal Grant Fully Funds Small Turbine Installation at Maine Senior Housing Complex

    SciTech Connect (OSTI)

    2009-02-26

    Article on a federal Residential Energy Assistance Challenge grant that funded the installation of a small wind turbine at a retirement center.

  14. Collegiate Wind Competition Turbines go Blade-to-Blade in Wind...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Collegiate Wind Competition Turbines go Blade-to-Blade in Wind Tunnel Tests at WINDPOWER Collegiate Wind Competition Turbines go Blade-to-Blade in Wind Tunnel Tests at WINDPOWER ...

  15. Xi an Nordex Wind Turbine Co Ltd aka Xi an Weide Wind Power Equipment...

    Open Energy Info (EERE)

    Nordex Wind Turbine Co Ltd aka Xi an Weide Wind Power Equipment Co Ltd Jump to: navigation, search Name: Xi'an Nordex Wind Turbine Co Ltd (aka Xi'an Weide Wind Power Equipment Co...

  16. NREL Wind Turbine Design Codes Certified - News Releases | NREL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wind Turbine Design Codes Certified August 2, 2005 Golden, Colo. - The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) announced today that its wind turbine design codes-termed FAST and ADAMS-can now be used for worldwide turbine certification. Through a joint effort by the NREL and Germanischer Lloyd (GL) of Hamburg, Germany, the world's foremost certifying body for wind turbines, both codes were approved for calculating onshore wind turbine loads for design and

  17. ADVANCED COMPOSITE WIND TURBINE BLADE DESIGN BASED ON DURABILITY...

    Office of Scientific and Technical Information (OSTI)

    ... Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 17 ... SERVICE LIFE; SHEAR PROPERTIES; SILICA; TESTING; TOLERANCE; TURBINE BLADES; WIND TURBINES ...

  18. International Effort Advances Offshore Wind Turbine Design Codes...

    Broader source: Energy.gov (indexed) [DOE]

    a reference model based on a 5-megawatt turbine on a floating semisubmersible foundation. ... New Modularization Framework Transforms FAST Wind Turbine Modeling Tool New Modeling Tool ...

  19. Mixer-Ejector Wind Turbine: Breakthrough High Efficiency Shrouded Wind Turbine

    SciTech Connect (OSTI)

    2010-02-22

    Broad Funding Opportunity Announcement Project: FloDesign Wind Turbine’s innovative wind turbine, inspired by the design of jet engines, could deliver 300% more power than existing wind turbines of the same rotor diameter by extracting more energy over a larger area. FloDesign Wind Turbine’s unique shrouded design expands the wind capture area, and the mixing vortex downstream allows more energy to flow through the rotor without stalling the turbine. The unique rotor and shrouded design also provide significant opportunity for mass production and simplified assembly, enabling mid-scale turbines (approximately 100 kW) to produce power at a cost that is comparable to larger-scale conventional turbines.

  20. Variable diameter wind turbine rotor blades

    DOE Patents [OSTI]

    Jamieson, Peter McKeich; Hornzee-Jones, Chris; Moroz, Emilian M.; Blakemore, Ralph W.

    2005-12-06

    A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.

  1. Load attenuating passively adaptive wind turbine blade

    DOE Patents [OSTI]

    Veers, Paul S.; Lobitz, Donald W.

    2003-01-01

    A method and apparatus for improving wind turbine performance by alleviating loads and controlling the rotor. The invention employs the use of a passively adaptive blade that senses the wind velocity or rotational speed, and accordingly modifies its aerodynamic configuration. The invention exploits the load mitigation prospects of a blade that twists toward feather as it bends. The invention includes passively adaptive wind turbine rotors or blades with currently preferred power control features. The apparatus is a composite fiber horizontal axis wind-turbine blade, in which a substantial majority of fibers in the blade skin are inclined at angles of between 15 and 30 degrees to the axis of the blade, to produces passive adaptive aeroelastic tailoring (bend-twist coupling) to alleviate loading without unduly jeopardizing performance.

  2. Load attenuating passively adaptive wind turbine blade

    DOE Patents [OSTI]

    Veers, Paul S.; Lobitz, Donald W.

    2003-01-07

    A method and apparatus for improving wind turbine performance by alleviating loads and controlling the rotor. The invention employs the use of a passively adaptive blade that senses the wind velocity or rotational speed, and accordingly modifies its aerodynamic configuration. The invention exploits the load mitigation prospects of a blade that twists toward feather as it bends. The invention includes passively adaptive wind turbine rotors or blades with currently preferred power control features. The apparatus is a composite fiber horizontal axis wind-turbine blade, in which a substantial majority of fibers in the blade skin are inclined at angles of between 15 and 30 degrees to the axis of the blade, to produces passive adaptive aeroelastic tailoring (bend-twist coupling) to alleviate loading without unduly jeopardizing performance.

  3. Wind Turbine Micropitting Workshop: A Recap

    SciTech Connect (OSTI)

    Sheng, S.

    2010-02-01

    Micropitting is a Hertzian fatigue phenomenon that affects many wind turbine gearboxes, and it affects the reliability of the machines. With the major growth and increasing dependency on renewable energy, mechanical reliability is an extremely important issue. The U.S. Department of Energy has made a commitment to improving wind turbine reliability and the National Renewable Energy Laboratory (NREL) has started a gearbox reliability project. Micropitting as an issue that needed attention came to light through this effort. To understand the background of work that had already been accomplished, and to consolidate some level of collective understanding of the issue by acknowledged experts, NREL hosted a wind turbine micropitting workshop, which was held at the National Wind Technology Center in Boulder, Colorado, on April 15 and 16, 2009.

  4. Establishment of Small Wind Regional Test Centers

    SciTech Connect (OSTI)

    Jimenez, T.; Forsyth, T.; Huskey, A.; Mendoza, I.; Sinclair, K.; Smith, J.

    2011-01-01

    The rapid growth of the small wind turbine (SWT) market is attracting numerous entrants. Small wind turbine purchasers now have many options, but often lack information (such as third-party certification) to select a quality turbine. Most SWTs do not have third-party certification due to the expense and difficulty of the certification process. Until recently, the only SWT certification bodies were in Europe. In North America, testing has been limited to a small number of U.S. Department of Energy (DOE) subsidized tests conducted at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center (NWTC) under the ongoing Independent Testing Project. During the past few years, DOE, the National Renewable Energy Laboratory (NREL), and some states have worked with the North American SWT industry to create a SWT certification infrastructure. The goal is to increase the number of certified turbines and gain greater consumer confidence in SWT technology. The American Wind Energy Association (AWEA) released the AWEA Small Wind Turbine Performance and Safety Standard, AWEA Standard 9.1 - 2009, in December 2009. The Small Wind Certification Council (SWCC) and Intertek, North American SWT certification bodies, began accepting applications for certification to the AWEA standard in 2010. To reduce certification testing costs, DOE and NREL are providing financial and technical assistance for an initial round of tests at four SWT test sites, which were selected through a competitive solicitation. The four organizations selected are Windward Engineering (Utah), The Alternative Energy Institute at West Texas A and M (Texas), a consortium consisting of Kansas State University and Colby Community College (Kansas), and Intertek (New York). Each organization will test two small wind turbines as part of their respective subcontracts with DOE and NREL. The testing results will be made publically available. The goal is to establish a lower-cost U.S. small wind testing

  5. 2014 Sandia Wind Turbine Blade Workshop

    Broader source: Energy.gov [DOE]

    The U.S. Energy Department's Sandia National Laboratories will host its 2014 Sandia Wind Turbine Blade Workshop at the Marriott Pyramid North in Albuquerque, New Mexico. The workshop provides a unique, blade focused collaborative forum that will bring together wind energy leaders from industry, academia, and government. Stay tuned for updates. Information regarding past Wind Workshops can be found at: http://windworkshops.sandia.gov/.

  6. Methods and apparatus for reducing peak wind turbine loads

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw

    2007-02-13

    A method for reducing peak loads of wind turbines in a changing wind environment includes measuring or estimating an instantaneous wind speed and direction at the wind turbine and determining a yaw error of the wind turbine relative to the measured instantaneous wind direction. The method further includes comparing the yaw error to a yaw error trigger that has different values at different wind speeds and shutting down the wind turbine when the yaw error exceeds the yaw error trigger corresponding to the measured or estimated instantaneous wind speed.

  7. SNL Wake Imaging System Solves Wind Turbine Wake Formation Mysteries...

    Broader source: Energy.gov (indexed) [DOE]

    Illustration showing a utility-scale wind turbine in a field. A square brown steel shed ... a green triangle) that travels from the shed to above the turbine downwind of the turbine. ...

  8. Aerodynamic and aeroacoustic for wind turbine

    SciTech Connect (OSTI)

    Mohamed, Maizi; Rabah, Dizene

    2015-03-10

    This paper describes a hybrid approach forpredicting noise radiated from the rotating Wind Turbine (HAWT) blades, where the sources are extracted from an unsteady Reynolds-Averaged-Navier Stocks (URANS) simulation, ANSYS CFX 11.0, was used to calculate The near-field flow parameters around the blade surface that are necessary for FW-H codes. Comparisons with NREL Phase II experimental results are presented with respect to the pressure distributions for validating a capacity of the solver to calculate the near-field flow on and around the wind turbine blades, The results show that numerical data have a good agreement with experimental. The acoustic pressure, presented as a sum of thickness and loading noise components, is analyzed by means of a discrete fast Fourier transformation for the presentation of the time acoustic time histories in the frequency domain. The results convincingly show that dipole source noise is the dominant noise source for this wind turbine.

  9. Methods of making wind turbine rotor blades

    DOE Patents [OSTI]

    Livingston, Jamie T.; Burke, Arthur H. E.; Bakhuis, Jan Willem; Van Breugel, Sjef; Billen, Andrew

    2008-04-01

    A method of manufacturing a root portion of a wind turbine blade includes, in an exemplary embodiment, providing an outer layer of reinforcing fibers including at least two woven mats of reinforcing fibers, providing an inner layer of reinforcing fibers including at least two woven mats of reinforcing fibers, and positioning at least two bands of reinforcing fibers between the inner and outer layers, with each band of reinforcing fibers including at least two woven mats of reinforcing fibers. The method further includes positioning a mat of randomly arranged reinforcing fibers between each pair of adjacent bands of reinforcing fibers, introducing a polymeric resin into the root potion of the wind turbine blade, infusing the resin through the outer layer, the inner layer, each band of reinforcing fibers, and each mat of random reinforcing fibers, and curing the resin to form the root portion of the wind turbine blade.

  10. Shoosing the appropriate size wind turbine

    SciTech Connect (OSTI)

    Lynette, R.

    1996-12-31

    Within the past several years, wind turbines rated at 400 kW and higher have been introduced into the market, and some manufacturers are developing machines rated at 750 - 1,000+ kW. This raises the question: What is the appropriate size for utility-grade wind turbines today? The answer depends upon the site where the machines will be used and the local conditions. The issues discussed in the paper are: (1) Site-Related (a) Visual, noise, erosion, television interference, interference with aviation (b) Siting efficiency (2) Logistics (a) Adequacy of roads and bridges to accept large vehicles (b) Availability and cost of cranes for erection and maintenance (c) Capability of local repair/overhauls (3) Cost Effectiveness (a) Capital costs (1) Wind Turbine (2) Infrastructure costs (b) Maintenance costs (4) Technical/Financial Risk. 1 fig., 1 tab.