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Sample records for wind turbine project

  1. 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.,

  2. Maine Project Launches First Grid-Connected Offshore Wind Turbine...

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

    Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. Maine Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. May 31, 2013 - 11:00am Addthis ...

  3. NREL Releases RFP for Distributed Wind Turbine Competitiveness Improvement Projects

    Office of Energy Efficiency and Renewable Energy (EERE)

    In support of DOE's efforts to further develop distributed wind technology, NREL's National Wind Technology Center has released a Request for Proposal for the following Distributed Wind Turbine Competitiveness Improvement Projects on the Federal Business

  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. Advanced Wind Turbine Program Next Generation Turbine Development Project: June 17, 1997--April 30, 2005

    SciTech Connect (OSTI)

    GE Wind Energy, LLC

    2006-05-01

    This document reports the technical results of the Next Generation Turbine Development Project conducted by GE Wind Energy LLC. This project is jointly funded by GE and the U.S. Department of Energy's National Renewable Energy Laboratory.The goal of this project is for DOE to assist the U.S. wind industry in exploring new concepts and applications of cutting-edge technology in pursuit of the specific objective of developing a wind turbine that can generate electricity at a levelized cost of energy of $0.025/kWh at sites with an average wind speed of 15 mph (at 10 m height).

  6. Low Wind Speed Turbine Development Project Report: November 4, 2002 - December 31, 2006

    SciTech Connect (OSTI)

    Mikhail, A.

    2009-01-01

    This report summarizes work conducted by Clipper Windpower under the DOE Low Wind Speed Turbine project. The objective of this project was to produce a wind turbine that can lower the cost of energy.

  7. Seneca Nation of Indians Project: 1.8 MW Wind Turbine on Tribal...

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

    PAST ACTIVITIES & PROJECTS 1.8 MW Wind Turbine on Common Lands Department of Energy ... and NG. PROJECT OBJECTIVES 1.8 MW Wind Turbine on Common Lands Design procure and ...

  8. DOE-Funded Project Develops Safer Access to Offshore Wind Turbine...

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

    DOE-Funded Project Develops Safer Access to Offshore Wind Turbine Platforms DOE-Funded Project Develops Safer Access to Offshore Wind Turbine Platforms September 10, 2015 - 6:21pm ...

  9. 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.

  10. EA-2004: The Seneca Nation Wind Turbine Project, Cattaraugus...

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

    Seneca Nation of Indians, to design, permit, and construct up to a 2.0-megawatt wind turbine on Tribal common lands in the Cattaraugus Territory, New York. The turbine would be...

  11. EA-2004: Seneca Nation of Indians Wind Turbine Project, Cattaraugus...

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

    funding to the Seneca Nation of Indians, to design, permit, and construct a 1.7-megawatt wind turbine on Tribal common lands in the Cattaraugus Territory, New York. The turbine...

  12. Lessons Learned: Milwaukee’s Wind Turbine Project

    Broader source: Energy.gov [DOE]

    U.S. Department of Energy Community and Renewable Energy Success Stories webinar series titled Wind Energy in Urban Environments. This presentation describes a mid-size wind turbine installation near downtown Milwaukee, Wisconsin.

  13. 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.

  14. 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.

  15. 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

  16. Seneca Nation of Indians Leverages DOE Support for Wind Turbine Project |

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

    Department of Energy Seneca Nation of Indians Leverages DOE Support for Wind Turbine Project Seneca Nation of Indians Leverages DOE Support for Wind Turbine Project April 28, 2016 - 11:19am Addthis Office of Indian Energy Chris Deschene (third from the right) was among those in attendance at a groundbreaking ceremony the Seneca Nation of Indians held for its 1.5-MW wind turbine on April 27. Photo by Ken Parker, Food Is Our Medicine. Office of Indian Energy Chris Deschene (third from the

  17. EA-1923: Green Energy School Wind Turbine Project on Saipan, Commonwealth of the Northern Mariana Islands

    Broader source: Energy.gov [DOE]

    This EA will evaluate the potential environmental impacts of a proposal to provide funding for the Green Energy School Project which partially consists of eight 20 kW wind turbines at the Saipan Southern High School.

  18. Session: Monitoring wind turbine project sites for avian impacts

    SciTech Connect (OSTI)

    Erickson, Wally

    2004-09-01

    This third session at the Wind Energy and Birds/Bats workshop consisted of one presentation followed by a discussion/question and answer period. The focus of the session was on existing wind projects that are monitored for their impacts on birds and bats. The presentation given was titled ''Bird and Bat Fatality Monitoring Methods'' by Wally Erickson, West, Inc. Sections included protocol development and review, methodology, adjusting for scavenging rates, and adjusting for observer detection bias.

  19. 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 ...

  20. 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...

  1. 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.

  2. 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...

  3. 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...

  4. 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,

  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. 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

  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 ... Twitter Google + Vimeo Newsletter Signup SlideShare Sandia Wind Turbine Loads Database ...

  17. 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...

  18. 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...

  19. 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

  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. 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

  4. 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

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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....

  11. 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...

  12. 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,

  13. WINDExchange: Funding School Wind Projects

    Wind Powering America (EERE)

    Funding School Wind Projects Funding school wind installations can be challenging, but many schools have successfully secured funding to install turbines and implement curricula. The following examples of methods used to fund Wind for Schools projects may be useful for anyone researching funding wind turbine installations at schools; also see the Wind for Schools Funding Spreadsheet for more examples of school turbine costs and mechanisms utilized to fund the projects. Photo of children in front

  14. 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.

  15. 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...

  16. 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...

  17. EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to support research on floating offshore wind turbine platforms. This project would support the mission, vision, and goals of DOE’s Office of Energy Efficiency and Renewable Energy Wind and Water Power Program to improve performance, lower costs, and accelerate deployment of innovative wind power technologies. Development of offshore wind energy technologies would help the nation reduce its greenhouse gas emissions, diversify its energy supply, provide cost-competitive electricity to key coastal regions, and stimulate revitalization of key sectors of the economy.

  18. Effectiveness of Changing Wind Turbine Cut-in Speed to Reduce Bat Fatalities at Wind Facilities

    SciTech Connect (OSTI)

    Huso, Manuela M. P.; Hayes, John P.

    2009-04-01

    This report details an experiment on the effectiveness of changing wind turbine cut-in speed on reducing bat fatality from wind turbines at the Casselman Wind Project in Somerset County, Pennsylvania.

  19. EA-2004: The Seneca Nation Wind Turbine Project, Cattaraugus Territory, Erie County, New York

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) is proposing to authorize the expenditure of federal funding to the Seneca Nation of Indians, to design, permit, and construct up to a 2.0-megawatt wind turbine on Tribal common lands in the Cattaraugus Territory, New York. The turbine would be located near Lucky Lane and Gil Lay Arena. An Environmental Assessment (EA) has been prepared by DOE pursuant to the requirements of the National Environmental Policy Act (NEPA).

  20. 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.

  1. 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.

  2. 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.

  3. Mandan, Hidatsa, and Arikara Nation - Utility Scale Wind Turbine...

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

    MANDAN, HIDATSA, & ARIKARA NATION Utility Wind Scale Turbine Demonstration Project on the ... (AOC) 1550 60 Hz, 66 kW wind turbine on tribal land to provide power to a ...

  4. 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

  5. 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:...

  6. 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...

  7. 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.

  8. WINDExchange: Wind for Schools Project

    Wind Powering America (EERE)

    Participant Roles & Responsibilities Affiliate Projects Pilot Project Results Project Funding School Project Locations Education & Training Programs Curricula & Teaching Materials Resources Wind for Schools Project The U.S. Department of Energy funds the Wind for Schools project, which helps develop a future wind energy workforce by engaging students at higher education institutions to join Wind Application Centers and serve as project consultants for small wind turbine

  9. 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.

  10. 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...

  11. 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.

  12. 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.

  13. 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...

  14. 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...

  15. 20% Wind Energy by 2030 - Chapter 2: Wind Turbine Technology Summary Slides

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

    | Department of Energy 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 challenges, and path forward 20percent_summary_chap2.pdf (1.31 MB) More Documents & Publications 20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply Testing, Manufacturing, and Component Development Projects U.S. Offshore Wind Manufacturing and Supply Chain

  16. 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 ...

  17. 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.

  18. 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 ...

  19. 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 ...

  20. 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...

  1. 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.

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  6. 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...

  7. 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.

  8. 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,...

  9. 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 ......

  10. 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.

  11. SMART Wind Turbine Rotor: Design and Field Test

    Broader source: Energy.gov [DOE]

    Design and field test results from the SMART Rotor project, a wind turbine rotor with integrated trailing-edge flaps designed for active control of the rotor aerodynamics.

  12. 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 ...

  13. 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.

  14. 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.

  15. Coastal Ohio Wind Project

    SciTech Connect (OSTI)

    Gorsevski, Peter; Afjeh, Abdollah; Jamali, Mohsin; Bingman, Verner

    2014-04-04

    The Coastal Ohio Wind Project intends to address problems that impede deployment of wind turbines in the coastal and offshore regions of Northern Ohio. The project evaluates different wind turbine designs and the potential impact of offshore turbines on migratory and resident birds by developing multidisciplinary research, which involves wildlife biology, electrical and mechanical engineering, and geospatial science. Firstly, the project conducts cost and performance studies of two- and three-blade wind turbines using a turbine design suited for the Great Lakes. The numerical studies comprised an analysis and evaluation of the annual energy production of two- and three-blade wind turbines to determine the levelized cost of energy. This task also involved wind tunnel studies of model wind turbines to quantify the wake flow field of upwind and downwind wind turbine-tower arrangements. The experimental work included a study of a scaled model of an offshore wind turbine platform in a water tunnel. The levelized cost of energy work consisted of the development and application of a cost model to predict the cost of energy produced by a wind turbine system placed offshore. The analysis found that a floating two-blade wind turbine presents the most cost effective alternative for the Great Lakes. The load effects studies showed that the two-blade wind turbine model experiences less torque under all IEC Standard design load cases considered. Other load effects did not show this trend and depending on the design load cases, the two-bladed wind turbine showed higher or lower load effects. The experimental studies of the wake were conducted using smoke flow visualization and hot wire anemometry. Flow visualization studies showed that in the downwind turbine configuration the wake flow was insensitive to the presence of the blade and was very similar to that of the tower alone. On the other hand, in the upwind turbine configuration, increasing the rotor blade angle of attack

  16. 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.

  17. 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.

  18. 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 ...

  19. 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.

  20. Utility-Scale Wind Turbines | Open Energy Information

    Open Energy Info (EERE)

    turbines as greater than 1 megawatt. This technology class includes land-based and offshore wind projects. 1 Learn more about utility-scale wind at the links below....

  1. Wind turbine reliability :understanding and minimizing wind turbine operation and maintenance costs.

    SciTech Connect (OSTI)

    Walford, Christopher A. (Global Energy Concepts. Kirkland, WA)

    2006-03-01

    Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. This paper outlines the issues relevant to wind turbine reliability for wind turbine power generation projects. The first sections describe the current state of the industry, identify the cost elements associated with wind farm O&M and availability and discuss the causes of uncertainty in estimating wind turbine component reliability. The latter sections discuss the means for reducing O&M costs and propose O&M related research and development efforts that could be pursued by the wind energy research community to reduce cost of energy.

  2. 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...

  3. 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...

  4. 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.

  5. 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 ...

  6. 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.

  7. 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.

  8. Wind turbine reliability : understanding and minimizing wind turbine operation and maintenance costs.

    SciTech Connect (OSTI)

    Not Available

    2004-11-01

    Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk, or at least the perception of increased risk, is generally accompanied by increased financing fees or interest rates. Cost of energy (COE) is a key project evaluation metric, both in commercial applications and in the U.S. federal wind energy program. To reflect this commercial reality, the wind energy research community has adopted COE as a decision-making and technology evaluation metric. The COE metric accounts for the effects of reliability through levelized replacement cost and unscheduled maintenance cost parameters. However, unlike the other cost contributors, such as initial capital investment and scheduled maintenance and operating expenses, costs associated with component failures are necessarily speculative. They are based on assumptions about the reliability of components that in many cases have not been operated for a complete life cycle. Due to the logistical and practical difficulty of replacing major components in a wind turbine, unanticipated failures (especially serial failures) can have a large impact on the economics of a project. The uncertainty associated with long-term component reliability has direct bearing on the confidence level associated with COE projections. In addition, wind turbine technology is evolving. New materials and designs are being incorporated in contemporary wind turbines with the ultimate goal of reducing weight, controlling loads, and improving energy capture. While the goal of these innovations is reduction in the COE, there is a

  9. 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.

  10. 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.

  11. 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

  12. 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.

  13. 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...

  14. 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 ...

  15. 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.

  16. Rotationally sampled wind characteristics and correlations with MOD-OA wind turbine response

    SciTech Connect (OSTI)

    George, R.L.; Connell, J.R.

    1984-09-01

    This report presents results of a comprehensive wind and wind turbine measurement program: the Clayton, New Mexico, vertical plane array/MOD-OA project. In this experiment, the turbulent wind was measured for a large array of fixed anemometers located two blade diameters upwind of a 200-kW horizontal-axis wind turbine (HAWT). Simultaneously, key wind turbine response parameters were also measured. The first of two major objectives of this experiment was to determine the turbulent wind, rotationally sampled to emulate the motion of the wind turbine blade, for the range of different wind speeds and stability classes actually experienced by the wind turbine. The second major objective was to correlate this rotationally sampled wind with the wind turbine blade stress and power, in order to assess the usefulness of the wind measurements for wind turbine loads testing a prediction. Time series of rotationally sampled winds and wind turbine blade bending moments and power were converted to frequency spectra using Fourier transform techniques. These spectra were used as the basis for both qualitative and quantitative comparisons among the various cases. A quantitative comparison between the rotationally sampled wind input and blade bending response was made, using the Fourier spectra to estimate the blade transfer function. These transfer functions were then used to calculate an approximate damping coefficient for the MOD-OA fiberglass blade.

  17. 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.

  18. 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...

  19. 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 ...

  20. 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 ...

  1. 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 ...

  2. 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...

  3. 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.

  4. 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

  5. An Innovative Technique for Evaluating the Integrity and Durability of Wind Turbine Blade Composites - Final Project Report

    SciTech Connect (OSTI)

    Wang, Jy-An John; Ren, Fei; Tan, Ting; Mandell, John; Agastra, Pancasatya

    2011-11-01

    To build increasingly larger, lightweight, and robust wind turbine blades for improved power output and cost efficiency, durability of the blade, largely resulting from its structural composites selection and aerodynamic shape design, is of paramount concern. The safe/reliable operation of structural components depends critically on the selection of materials that are resistant to damage and failure in the expected service environment. An effective surveillance program is also necessary to monitor the degradation of the materials in the course of service. Composite materials having high specific strength/stiffness are desirable for the construction of wind turbines. However, most high-strength materials tend to exhibit low fracture toughness. That is why the fracture toughness of the composite materials under consideration for the manufacture of the next generation of wind turbines deserves special attention. In order to achieve the above we have proposed to develop an innovative technology, based on spiral notch torsion test (SNTT) methodology, to effectively investigate the material performance of turbine blade composites. SNTT approach was successfully demonstrated and extended to both epoxy and glass fiber composite materials for wind turbine blades during the performance period. In addition to typical Mode I failure mechanism, the mixed-mode failure mechanism induced by the wind turbine service environments and/or the material mismatch of the composite materials was also effectively investigated using SNTT approach. The SNTT results indicate that the proposed protocol not only provides significant advance in understanding the composite failure mechanism, but also can be readily utilized to assist the development of new turbine blade composites.

  6. 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.

  7. Dynamic Models for Wind Turbines and Wind Power Plants

    SciTech Connect (OSTI)

    Singh, M.; Santoso, S.

    2011-10-01

    The primary objective of this report was to develop universal manufacturer-independent wind turbine and wind power plant models that can be shared, used, and improved without any restrictions by project developers, manufacturers, and engineers. Manufacturer-specific models of wind turbines are favored for use in wind power interconnection studies. While they are detailed and accurate, their usages are limited to the terms of the non-disclosure agreement, thus stifling model sharing. The primary objective of the work proposed is to develop universal manufacturer-independent wind power plant models that can be shared, used, and improved without any restrictions by project developers, manufacturers, and engineers. Each of these models includes representations of general turbine aerodynamics, the mechanical drive-train, and the electrical characteristics of the generator and converter, as well as the control systems typically used. To determine how realistic model performance is, the performance of one of the models (doubly-fed induction generator model) has been validated using real-world wind power plant data. This work also documents selected applications of these models.

  8. 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...

  9. 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 ...

  10. 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.

  11. 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.

  12. 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

  13. DOE Seeking Proposals to Advance Distributed Wind Turbine Technology and

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

    Manufacturing | Department of Energy Seeking Proposals to Advance Distributed Wind Turbine Technology and Manufacturing DOE Seeking Proposals to Advance Distributed Wind Turbine Technology and Manufacturing December 30, 2014 - 11:04am Addthis On December 29, the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) released a third round of Requests for Proposals (RFPs) under DOE's Distributed Wind Competitiveness Improvement Project (CIP). The CIP aims to help U.S.

  14. 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...

  15. 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...

  16. 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...

  17. 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...

  18. 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...

  19. 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...

  20. 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...

  1. 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:...

  2. 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.

  3. 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

  4. AWEA Wind Project O&M and Safety Seminar

    Broader source: Energy.gov [DOE]

    The AWEA Wind Project O&M and Safety Seminar is where leading owners, operators, turbine manufacturers, material suppliers, wind technicians, managers, supervisors, engineers, and occupational...

  5. AWEA Wind Project Operations and Maintenance and Safety Seminar

    Broader source: Energy.gov [DOE]

    The AWEA Wind Project O&M and Safety Seminar is designed for owners, operators, turbine manufactures, material suppliers, wind technicians, managers, supervisors, engineers, and occupational...

  6. 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 ...

  7. Final Report on the Nikolski Wind-Diesel Project Wind Installation

    Energy Savers [EERE]

    ... Nikolski Wind-Diesel Project; Wind Turbine Installation, 10142010 Provided by the ... application through a hot water storage and distribution system at the adjacent school. ...

  8. 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.

  9. 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.

  10. 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.

  11. DOE-Funded Project Develops Safer Access to Offshore Wind Turbine Platforms

    Broader source: Energy.gov [DOE]

    More than 4,000 gigawatts of estimated gross offshore wind potential lies off the U.S. coastline—that’s more than four times the current generation capacity of the United States. With the coastal...

  12. Distributed Wind Competitiveness Improvement Project Fact Sheet

    Broader source: Energy.gov [DOE]

    The Competitiveness Improvement Project (CIP) is a periodic solicitation through the U.S. Department of Energy and its National Renewable Energy Laboratory. Manufacturers of small and medium wind turbines are awarded cost-shared grants via a competitive process to optimize their designs, develop advanced manufacturing processes, and perform turbine testing. The goals of the CIP are to make wind energy cost competitive with other distributed generation technology and increase the number of wind turbine designs certified to national testing standards.

  13. Midwest Consortium for Wind Turbine Reliability and Optimization

    SciTech Connect (OSTI)

    Scott R. Dana; Douglas E. Adams; Noah J. Myrent

    2012-05-11

    This report provides an overview of the efforts aimed to establish a student focused laboratory apparatus that will enhance Purdue's ability to recruit and train students in topics related to the dynamics, operations and economics of wind turbines. The project also aims to facilitate outreach to students at Purdue and in grades K-12 in the State of Indiana by sharing wind turbine operational data. For this project, a portable wind turbine test apparatus was developed and fabricated utilizing an AirX 400W wind energy converter. This turbine and test apparatus was outfitted with an array of sensors used to monitor wind speed, turbine rotor speed, power output and the tower structural dynamics. A major portion of this project included the development of a data logging program used to display real-time sensor data and the recording and creation of output files for data post-processing. The apparatus was tested in an open field to subject the turbine to typical operating conditions and the data acquisition system was adjusted to obtain desired functionality to facilitate use for student projects in existing courses offered at Purdue University and Indiana University. Data collected using the data logging program is analyzed and presented to demonstrate the usefulness of the test apparatus related to wind turbine dynamics and operations.

  14. 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

  15. Low Wind Speed Turbine Project Phase II: The Application of Medium-Voltage Electrical Apparatus to the Class of Variable Speed Multi-Megawatt Low Wind Speed Turbines; 15 June 2004--30 April 2005

    SciTech Connect (OSTI)

    Erdman, W.; Behnke, M.

    2005-11-01

    Kilowatt ratings of modern wind turbines have progressed rapidly from 50 kW to 1,800 kW over the past 25 years, with 3.0- to 7.5-MW turbines expected in the next 5 years. The premise of this study is simple: The rapid growth of wind turbine power ratings and the corresponding growth in turbine electrical generation systems and associated controls are quickly making low-voltage (LV) electrical design approaches cost-ineffective. This report provides design detail and compares the cost of energy (COE) between commercial LV-class wind power machines and emerging medium-voltage (MV)-class multi-megawatt wind technology. The key finding is that a 2.5% reduction in the COE can be achieved by moving from LV to MV systems. This is a conservative estimate, with a 3% to 3.5% reduction believed to be attainable once purchase orders to support a 250-turbine/year production level are placed. This evaluation considers capital costs as well as installation, maintenance, and training requirements for wind turbine maintenance personnel. Subsystems investigated include the generator, pendant cables, variable-speed converter, and padmount transformer with switchgear. Both current-source and voltage-source converter/inverter MV topologies are compared against their low-voltage, voltage-source counterparts at the 3.0-, 5.0-, and 7.5-MW levels.

  16. 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.

  17. 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

  18. 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 ...

  19. 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 ...

  20. 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 ...

  1. 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.

  2. 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. ...

  3. SUSTAINABLE CONCRETE FOR WIND TURBINE FOUNDATIONS.

    SciTech Connect (OSTI)

    BERNDT,M.L.

    2004-06-01

    The use of wind power to generate electricity continues to grow, especially given commitments by various countries throughout the world to ensure that a significant percentage of energy comes from renewable sources. In order to meet such objectives, increasingly larger turbines with higher capacity are being developed. The engineering aspects of larger turbine development tend to focus on design and materials for blades and towers. However, foundations are also a critical component of large wind turbines and represent a significant cost of wind energy projects. Ongoing wind research at BNL is examining two areas: (a) structural response analysis of wind turbine-tower-foundation systems and (b) materials engineering of foundations. This work is investigating the dynamic interactions in wind turbine systems, which in turn assists the wind industry in achieving improved reliability and more cost efficient foundation designs. The results reported herein cover initial studies of concrete mix designs for large wind turbine foundations and how these may be tailored to reduce cost and incorporate sustainability and life cycle concepts. The approach taken was to investigate material substitutions so that the environmental, energy and CO{sub 2}-impact of concrete could be reduced. The use of high volumes of ''waste'' materials in concrete was examined. These materials included fly ash, blast furnace slag and recycled concrete aggregate. In addition, the use of steel fiber reinforcement as a means to improve mechanical properties and potentially reduce the amount of bar reinforcement in concrete foundations was studied. Four basic mixes were considered. These were: (1) conventional mix with no material substitutions, (2) 50% replacement of cement with fly ash, (3) 50% replacement of cement with blast furnace slag and (4) 25% replacement of cement with fly ash and 25% replacement with blast furnace slag. Variations on these mixes included the addition of 1% by volume steel

  4. 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.

  5. 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.

  6. INL Wind Farm Project Description Document

    SciTech Connect (OSTI)

    Gary Siefert

    2009-07-01

    The INL Wind Farm project proposes to install a 20 MW to 40 MW wind farm on government property, consisting of approximately ten to twenty full-sized (80-meter hub height) towers with 2 MW turbines, and access roads. This includes identifying the optimal turbine locations, building access roads, and pouring the tower foundations in preparation for turbine installation. The project successfully identified a location on INL lands with commercially viable wind resources (i.e., greater than 11 mph sustained winds) for a 20 to 40 MW wind farm. Additionally, the proposed Wind Farm was evaluated against other General Plant Projects, General Purpose Capital Equipment projects, and Line Item Construction Projects at the INL to show the relative importance of the proposed Wind Farm project.

  7. 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...

  8. 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 ...

  9. UMore Park Wind Turbine Project Loggerhead Shrike Survey, DOE/EA-1791 (June 2010)

    Broader source: Energy.gov [DOE]

    The project area is located in a region of the state where Loggerhead Shrikes (Lanius ludovicianus) are consistently observed and known to be nesting. With populations steadily declining throughout...

  10. 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...

  11. 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.

  12. 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 ...

  13. 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 ...

  14. 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 ...

  15. 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...

  16. 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. ...

  17. 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 ...

  18. 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 ...

  19. 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 ...

  20. 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 ...

  1. 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 ...

  2. 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, ...

  3. 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 ...

  4. 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 ...

  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. 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.

  8. 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,...

  9. 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:...

  10. 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:...

  11. 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.

  12. 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).

  13. 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.

  14. AWEA Wind Project O&M and Safety Conference 2016

    Broader source: Energy.gov [DOE]

    The American Wind Energy Association Wind Project O&M and Safety Conference is where leading owners, operators, turbine manufacturers, material suppliers, wind technicians, managers,...

  15. How To Build a Wind Turbine in Less Than 20 Minutes | Department of Energy

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

    To Build a Wind Turbine in Less Than 20 Minutes How To Build a Wind Turbine in Less Than 20 Minutes Looking for a fun project to do with the family? Why not explore the gift that keeps on giving-clean energy. This project takes less than 20 minutes to complete and builds awareness of wind energy--the fastest growing source of power in the United States. Download the materials and instructions below. Paper Wind Turbine template.pdf (27.35 KB) Paper Wind Turbine template instructions.docx (1.16

  16. 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.

  17. 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.

  18. 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.

  19. Eagles are Making Wind Turbines Safer for Birds | Community | NREL

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

    Eagles are Making Wind Turbines Safer for Birds March 17, 2016 A bald eagle named Spirit and a golden eagle named Nova recently helped a team of researchers at the National Wind Technology Center (NWTC) collect terabytes of data for a project aimed at helping researchers make wind energy safer for birds. The National Renewable Energy Laboratory partnered with industry to gather data about bird flight patterns, which will help the companies develop technology to reduce bird collisions with

  20. 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

  1. Comparison of financing costs for wind turbine and fossil powerplants

    SciTech Connect (OSTI)

    Kahn, E.

    1995-02-01

    This paper compares the financing costs of wind turbine powerplants with those of fossil powerplants. The goal of this examination is to determine the extent to which these costs differ and what the sources of such differences may be. The discussion is organized in the following fashion. Section 2 introduces basic terminology and concepts from finance, as they apply in the powerplant setting. Section 3 reviews available data from a variety of sources to estimate the magnitude of the variables identified in Section 2. In Section 4 we examine the effect of the production tax credit enacted in the Energy Policy Act of 1992 on the financing of wind turbine projects. Conclusions are offered in Section 5. In the past two years there have been only two wind turbine projects that have been financed, so the basis for broad conclusions is limited. Nonetheless, there appears to be a significant advantage in financing costs for conventional projects compared to wind turbines. The two sources of disadvantage to wind power are first, the cost of equity capital is significantly more expensive, and second, the capital structure of wind projects has a much greater fraction of expensive equity than conventional alternatives.

  2. Advanced wind turbine design studies: Advanced conceptual study. Final report

    SciTech Connect (OSTI)

    Hughes, P; Sherwin, R

    1994-08-01

    In conjunction with the US Department of Energy and the National Renewable Energy Laboratory`s Advanced Wind Turbine Program, the Atlantic Orient Corporation developed preliminary designs for the next generation of wind turbines. These 50 kW and 350 kW turbines are based upon the concept of simplicity. By adhering to a design philosophy that emphasizes simplicity, we project that these turbines will produce energy at extremely competitive rates which will unlock the potential of wind energy domestically and internationally. The program consisted of three distinct phases. First, we evaluated the operational history of the Enertech 44 series wind turbines. As a result of this evaluation, we developed, in the second phase, a preliminary design for a new 50 kW turbine for the near-term market. In the third phase, we took a clean-sheet-of-paper approach to designing a 350 kW turbine focused on the mid-1990s utility market that incorporated past experience and advanced technology.

  3. Workforce Development Wind Projects

    Office of Energy Efficiency and Renewable Energy (EERE)

    This report covers the Wind and Water Power Technologies Office’s workforce development wind projects from fiscal years 2008 to 2014.

  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. 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, ...

  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. 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.

  8. 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.

  9. Wind for Schools Project Power System Brief, Wind Powering America Fact Sheet Series

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2009-05-01

    Wind Powering America's (WPA's) Wind for Schools project uses a basic system configuration for each school project. The system incorporates a single SkyStream wind turbine, a 70-ft guyed tower, disconnect boxes at the base of the turbine and at the school, and an interconnection to the school's electrical system. This document provides a detailed description of each system component.

  10. 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 ...

  11. 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...

  12. 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...

  13. 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.

  14. 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.

  15. 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...

  16. 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...

  17. Simulation of winds as seen by a rotating vertical axis wind turbine blade

    SciTech Connect (OSTI)

    George, R.L.

    1984-02-01

    The objective of this report is to provide turbulent wind analyses relevant to the design and testing of Vertical Axis Wind Turbines (VAWT). A technique was developed for utilizing high-speed turbulence wind data from a line of seven anemometers at a single level to simulate the wind seen by a rotating VAWT blade. Twelve data cases, representing a range of wind speeds and stability classes, were selected from the large volume of data available from the Clayton, New Mexico, Vertical Plane Array (VPA) project. Simulations were run of the rotationally sampled wind speed relative to the earth, as well as the tangential and radial wind speeds, which are relative to the rotating wind turbine blade. Spectral analysis is used to compare and assess wind simulations from the different wind regimes, as well as from alternate wind measurement techniques. The variance in the wind speed at frequencies at or above the blade rotation rate is computed for all cases, and is used to quantitatively compare the VAWT simulations with Horizontal Axis Wind Turbine (HAWT) simulations. Qualitative comparisons are also made with direct wind measurements from a VAWT blade.

  18. 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.

  19. 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.

  20. 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 ...

  1. 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...

  2. 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

  3. 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 ...

  4. 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 ...

  5. 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.

  6. 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.

  7. 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.

  8. Low Wind Speed Turbine Developments in Convoloid Gearing: Final Technical Report, June 2005 - October 2008

    SciTech Connect (OSTI)

    Genesis Partners LP

    2010-08-01

    This report presents the results of a study conducted by Genesis Partners LP as part of the United States Department of Energy Wind Energy Research Program to develop wind technology that will enable wind systems to compete in regions having low wind speeds. The purpose of the program is to reduce the cost of electricity from large wind systems in areas having Class 4 winds to 3 cents per kWh for onshore systems or 5 cents per kWh for offshore systems. This work builds upon previous activities under the WindPACT project, the Next Generation Turbine project, and Phase I of the Low Wind Speed Turbine (LWST) project. This project is concerned with the development of more cost-effective gearing for speed increasers for wind turbines.

  9. 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/.

  10. Distributed Wind Competitiveness Improvement Project Fact Sheet...

    Office of Environmental Management (EM)

    perform turbine testing. The goals of the CIP are to make wind energy cost competitive with other distributed generation technology and increase the number of wind turbine designs ...

  11. 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...

  12. Dynamically Adjustable Wind Turbine Blades: Adaptive Turbine Blades, Blown Wing Technology for Low-Cost Wind Power

    SciTech Connect (OSTI)

    2010-02-02

    Broad Funding Opportunity Announcement Project: Caitin is developing wind turbines with a control system that delivers compressed air from special slots located in the surface of its blades. The compressed air dynamically adjusts the aerodynamic performance of the blades, and can essentially be used to control lift, drag, and ultimately power. This control system has been shown to exhibit high levels of control in combination with an exceptionally fast response rate. The deployment of such a control system in modern wind turbines would lead to better management of the load on the system during peak usage, allowing larger blades to be deployed with a resulting increase in energy production.

  13. 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.

  14. 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. ...

  15. NREL Collaborates to Improve Wind Turbine Technology (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-01-01

    NREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering the cost of energy. Unintended gearbox failures have a significant impact on the cost of wind farm operations. In 2007, the National Renewable Energy Laboratory (NREL) initiated the Gearbox Reliability Collaborative (GRC), which follows a multi-pronged approach based on a collaborative of manufacturers, owners, researchers, and consultants. The project combines analysis, field testing, dynamometer testing, condition monitoring, and the development and population of a gearbox failure database. NREL and other GRC partners have been able to identify shortcomings in the design, testing, and operation of wind turbines that contribute to reduced gearbox reliability. In contrast to private investigations of these problems, GRC findings are quickly shared among GRC participants, including many wind turbine manufacturers and equipment suppliers. Ultimately, the findings are made public for use throughout the wind industry. This knowledge will result in increased gearbox reliability and an overall reduction in the cost of wind energy. Project essentials include the development of two redesigned and heavily instrumented representative gearbox designs. Field and dynamometer tests are conducted on the gearboxes to build an understanding of how selected loads and events translate into bearing and gear response. The GRC evaluates and validates current wind turbine, gearbox, gear and bearing analytical tools/models, develops new tools/models, and recommends improvements to design and certification standards, as required. In addition, the GRC is investigating condition monitoring methods to improve turbine reliability. Gearbox deficiencies are the result of many factors, and the GRC team recommends efficient and cost-effective improvements in order to expand the industry knowledge base and facilitate immediate improvements in the gearbox life cycle.

  16. 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.

  17. 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.

  18. 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.

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

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

    Transforming Wind Turbine Blade Mold Manufacturing with 3D Printing Transforming Wind Turbine Blade Mold Manufacturing with 3D Printing A screenshot of the cover of the 3D blade ...

  20. Wind Turbine Manufacturing Transforms with Three-Dimensional...

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

    (A2e) initiative is applying 3-D-printing processes to create wind turbine blade molds. ... overall, as blades represent one of the most expensive components of a wind turbine. ...

  1. Seneca Nation of Indians Leverages DOE Support for Wind Turbine...

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

    held for its 1.5-MW wind turbine on April 27. Photo by Ken Parker, Food Is Our Medicine. ... held for its 1.5-MW wind turbine on April 27. Photo by Ken Parker, Food Is Our Medicine. ...

  2. SNL Researchers Assess Wind Turbine Blade Inspection and Repair...

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

    A picture of several wind turbine blade panels set out on a table and held in place with metal clamps. Flaws in wind turbine blades emanating from the manufacturing process are an ...

  3. 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 ...

  4. Argonne Researchers Shine "Light" on Origins of Wind Turbine...

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

    root cause of failures to wind turbine drivetrain components, such as bearings and gears. ... The results of this work will be presented at the DOE-sponsored Wind Turbine Tribology ...

  5. United States Launches First Grid-Connected Offshore Wind Turbine...

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

    United States Launches First Grid-Connected Offshore Wind Turbine United States Launches First Grid-Connected Offshore Wind Turbine August 22, 2013 - 12:00am Addthis Leveraging an ...

  6. File:Wind-turbine-economics-student.pdf | Open Energy Information

    Open Energy Info (EERE)

    Wind-turbine-economics-student.pdf Jump to: navigation, search File File history File usage Metadata File:Wind-turbine-economics-student.pdf Size of this preview: 463 599...

  7. File:Wind-turbine-economics-teacher.pdf | Open Energy Information

    Open Energy Info (EERE)

    Wind-turbine-economics-teacher.pdf Jump to: navigation, search File File history File usage Metadata File:Wind-turbine-economics-teacher.pdf Size of this preview: 463 599...

  8. File:Wind-turbine-economics-lp.pdf | Open Energy Information

    Open Energy Info (EERE)

    Wind-turbine-economics-lp.pdf Jump to: navigation, search File File history File usage Metadata File:Wind-turbine-economics-lp.pdf Size of this preview: 463 599 pixels. Other...

  9. OUT Success Stories: Advanced Airfoils for Wind Turbines

    DOE R&D Accomplishments [OSTI]

    Jones, J.; Green, B.

    2000-08-01

    New airfoils have substantially increased the aerodynamic efficiency of wind turbines. It is clear that these new airfoils substantially increased energy output from wind turbines. Virtually all new blades built in this country today use these advanced airfoil designs.

  10. Offshore Ambitions for the Vertical-Axis Wind Turbine

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

    Ambitions for the Vertical-Axis Wind Turbine - Sandia Energy Energy Search Icon Sandia ... Offshore Ambitions for the Vertical-Axis Wind Turbine HomeEnergy, News, News & Events, ...

  11. Sandia Wind-Turbine Blade Flaw Detection Experiments in Denmark

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

    Wind-Turbine Blade Flaw Detection Experiments in Denmark - Sandia Energy Energy Search ... Twitter Google + Vimeo GovDelivery SlideShare Sandia Wind-Turbine Blade Flaw Detection ...

  12. Wyoming Wind Power Project (generation/wind)

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

    Wind Power > Generation Hydro Power Wind Power Monthly GSP BPA White Book Dry Year Tools Firstgov Wyoming Wind Power Project (Foote Creek Rim I and II) Thumbnail image of wind...

  13. State of the Art in Floating Wind Turbine Design Tools

    SciTech Connect (OSTI)

    Cordle, A.; Jonkman, J.

    2011-10-01

    This paper presents an overview of the simulation codes available to the offshore wind industry that are capable of performing integrated dynamic calculations for floating offshore wind turbines.

  14. Dynamic stall on wind turbine blades

    SciTech Connect (OSTI)

    Butterfield, C.P.; Simms, D.; Scott, G. ); Hansen, A.C. )

    1991-12-01

    Dynamic loads must be predicted accurately in order to estimate the fatigue life of wind turbines operating in turbulent environments. Dynamic stall contributes to increased dynamic loads during normal operation of all types of horizontal-axis wind turbine (HAWTs). This report illustrates how dynamic stall varies throughout the blade span of a 10 m HAWT during yawed and unyawed operating conditions. Lift, drag, and pitching moment coefficients during dynamics stall are discussed. Resulting dynamic loads are presented, and the effects of dynamic stall on yaw loads are demonstrated using a yaw loads dynamic analysis (YAWDYN). 12 refs., 22 figs., 1 tab.

  15. Wind Turbine Blade Testing System Using Base Excitation - Energy Innovation

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

    Portal Find More Like This Return to Search Wind Turbine Blade Testing System Using Base Excitation Base Excitation Test System (B.E.T.S.) National Renewable Energy Laboratory Contact NREL About This Technology Technology Marketing Summary Recently, there has been a rapidly growing demand for renewable energy, including wind energy. To meet this demand, wind turbine designers are working to provide blade designs that allow a turbine connected to the wind turbine blades or to the rotor to

  16. NREL Readies New Wind Turbine Drivetrain for Commercialization | Department

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

    of Energy Readies New Wind Turbine Drivetrain for Commercialization NREL Readies New Wind Turbine Drivetrain for Commercialization May 18, 2015 - 3:52pm Addthis Illustration of a wind turbine drivetrain with a transparent case that shows the internal gears. In February, engineers at the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) assembled the innovative, medium-speed, medium-voltage wind turbine drivetrain that was the result of a study funded by DOE's

  17. Modal Dynamics of Large Wind Turbines with Different Support Structures

    SciTech Connect (OSTI)

    Bir, G.; Jonkman, J.

    2008-07-01

    This paper presents modal dynamics of floating-platform-supported and monopile-supported offshore wind turbines.

  18. Methods and apparatus for rotor load control in wind turbines

    DOE Patents [OSTI]

    Moroz, Emilian Mieczyslaw

    2006-08-22

    A wind turbine having a rotor, at least one rotor blade, and a plurality of generators, of which a first generator is configured to provide power to an electric grid and a second generator is configured to provide power to the wind turbine during times of grid loss. The wind turbine is configured to utilize power provided by the second generator to reduce loads on the wind turbine during times of grid loss.

  19. VIDEO: How to Build a Wind Turbine in less than 20 Minutes | Department of

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

    Energy VIDEO: How to Build a Wind Turbine in less than 20 Minutes VIDEO: How to Build a Wind Turbine in less than 20 Minutes June 14, 2016 - 9:58am Addthis Hoyt Battey of the Wind and Water Power Technologies Office provides a simple step-by-step project on building a wind turbine that can be completed in less than 20 minutes. Mike Mueller Senior Digital Content Strategist, EERE Communications Did You Know? Wind generates enough electricity to power 17.5 million homes annually. EERE

  20. 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.

  1. WINDExchange: Wind for Schools Pilot Project Results

    Wind Powering America (EERE)

    Pilot Project Results The Colorado pilot project launched in 2006. Lessons learned during this exercise helped to identify the key elements of a successful Wind for Schools project. This page summarizes these elements, which can be helpful for others planning school turbine installations. Identify a Champion A project cannot succeed without a local project champion, an individual, or group to keep the key players in the community informed, cooperating, and moving toward project goals. The

  2. Sandia's 2016 Wind Turbine Blade Workshop Beings

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

    2016 Wind Turbine Blade Workshop Beings - 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

  3. Property:WindTurbineManufacturer | Open Energy Information

    Open Energy Info (EERE)

    + Northern Power Systems + Adair Wind Farm I + Vestas + Adair Wind Farm II + Siemens + Adams Wind Project + Alstom + Aeroman Repower Wind Farm + GE Energy + Affinity Wind Farm +...

  4. How Do Wind Turbines Work? | Department of Energy

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

    Energy Basics » How Do Wind Turbines Work? How Do Wind Turbines Work? 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 create electricity. Click on the image to see an animation of wind at work. 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

  5. AVEC's Village Wind Projects

    Energy Savers [EERE]

    by 10% - Plant costs, depreciation, ... over 100 wind projects in Alaska in the 1980s Nearly all failed Lack of maintenance and ... construction and operation of the new ...

  6. New Funding Opportunity to Develop Larger Wind Turbine Blades | Department

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

    of Energy Funding Opportunity to Develop Larger Wind Turbine Blades New Funding Opportunity to Develop Larger Wind Turbine Blades March 16, 2015 - 2:47pm Addthis The Energy Department today announced $1.8 million in funding for the development of larger wind turbine blades that will help capture more power from wind resources and increase the efficiency of wind energy systems. This funding will support the research and development of technological innovations to improve the manufacturing,

  7. Wind Turbine System State Awareness - Energy Innovation Portal

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

    System State Awareness Los Alamos National Laboratory Contact LANL About This Technology Technology Marketing SummaryResearchers 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. DescriptionResearchers at the Los Alamos National Laboratory (LANL) Intelligent Wind Turbine Program are developing a multi-physics modeling approach for the analysis of wind

  8. Large wind turbine development in Europe

    SciTech Connect (OSTI)

    Zervos, A.

    1996-12-31

    During the last few years we have witnessed in Europe the development of a new generation of wind turbines ranging from 1000-1500 kW size. They are presently being tested and they are scheduled to reach the market in late 1996 early 1997. The European Commission has played a key role by funding the research leading to the development of these turbines. The most visible initiative at present is the WEGA program - the development, together with Europe`s leading wind industry players of a new generation of turbines in the MW range. By the year 1997 different European manufacturers will have introduced almost a dozen new MW machine types to the international market, half of them rated at 1.5 MW. 3 refs., 3 tabs.

  9. 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.

  10. Root region airfoil for wind turbine

    DOE Patents [OSTI]

    Tangler, James L.; Somers, Dan M.

    1995-01-01

    A thick airfoil for the root region of the blade of a wind turbine. The airfoil has a thickness in a range from 24%-26% and a Reynolds number in a range from 1,000,000 to 1,800,000. The airfoil has a maximum lift coefficient of 1.4-1.6 that has minimum sensitivity to roughness effects.

  11. Wooden wind turbine blade manufacturing process

    DOE Patents [OSTI]

    Coleman, Clint

    1986-01-01

    A wooden wind turbine blade is formed by laminating wood veneer in a compression mold having the exact curvature needed for one side of the blade, following which the other side of the blade is ground flat along its length but twisted with respect to the blade axis.

  12. Wind Turbine Tribology Seminar - A Recap

    SciTech Connect (OSTI)

    Errichello, R.; Sheng, S.; Keller, J.; Greco, A.

    2012-02-01

    Tribology is the science and engineering of interacting surfaces in relative motion. It includes the study and application of the principles of friction, lubrication, and wear. It is an important phenomenon that not only impacts the design and operation of wind turbine gearboxes, but also their subsequent maintenance requirements and overall reliability. With the major growth and increasing dependency on renewable energy, mechanical reliability is an extremely important issue. The Wind Turbine Tribology Seminar was convened to explore the state-of-the-art in wind turbine tribology and lubricant technologies, raise industry awareness of a very complex topic, present the science behind each technology, and identify possible R&D areas. To understand the background of work that had already been accomplished, and to consolidate some level of collective understanding of tribology by acknowledged experts, the National Renewable Energy Laboratory (NREL), Argonne National Laboratory (ANL), and the U.S. Department of Energy (DOE) hosted a wind turbine tribology seminar. It was held at the Renaissance Boulder Flatiron Hotel in Broomfield, Colorado on November 15-17, 2011. This report is a summary of the content and conclusions. The presentations given at the meeting can be downloaded. Interested readers who were not at the meeting may wish to consult the detailed publications listed in the bibliography section, obtain the cited articles in the public domain, or contact the authors directly.

  13. 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.

  14. Wind Turbine Modeling for Computational Fluid Dynamics: December 2010 - December 2012

    SciTech Connect (OSTI)

    Tossas, L. A. M.; Leonardi, S.

    2013-07-01

    With the shortage of fossil fuel and the increasing environmental awareness, wind energy is becoming more and more important. As the market for wind energy grows, wind turbines and wind farms are becoming larger. Current utility-scale turbines extend a significant distance into the atmospheric boundary layer. Therefore, the interaction between the atmospheric boundary layer and the turbines and their wakes needs to be better understood. The turbulent wakes of upstream turbines affect the flow field of the turbines behind them, decreasing power production and increasing mechanical loading. With a better understanding of this type of flow, wind farm developers could plan better-performing, less maintenance-intensive wind farms. Simulating this flow using computational fluid dynamics is one important way to gain a better understanding of wind farm flows. In this study, we compare the performance of actuator disc and actuator line models in producing wind turbine wakes and the wake-turbine interaction between multiple turbines. We also examine parameters that affect the performance of these models, such as grid resolution, the use of a tip-loss correction, and the way in which the turbine force is projected onto the flow field.

  15. Wind Turbine Gearbox Condition Monitoring Round Robin Study - Vibration Analysis

    SciTech Connect (OSTI)

    Sheng, S.

    2012-07-01

    The Gearbox Reliability Collaborative (GRC) at the National Wind Technology Center (NWTC) tested two identical gearboxes. One was tested on the NWTCs 2.5 MW dynamometer and the other was field tested in a turbine in a nearby wind plant. In the field, the test gearbox experienced two oil loss events that resulted in damage to its internal bearings and gears. Since the damage was not severe, the test gearbox was removed from the field and retested in the NWTCs dynamometer before it was disassembled. During the dynamometer retest, some vibration data along with testing condition information were collected. These data enabled NREL to launch a Wind Turbine Gearbox Condition Monitoring Round Robin project, as described in this report. The main objective of this project was to evaluate different vibration analysis algorithms used in wind turbine condition monitoring (CM) and find out whether the typical practices are effective. With involvement of both academic researchers and industrial partners, the project sets an example on providing cutting edge research results back to industry.

  16. EA-1800: DOE’s Proposed Financial Assistance to Illinois for the Monarch Warren County Wind Turbine Project, Lenox Township, Warren County, Illinois

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) has provided Federal funding to the Illinois Department of Commerce and Economic Opportunity (DCEO) under the State Energy Program (SEP). DCEO is seeking to provide $5 million of its SEP funds to Monarch Wind Power (MWP), who would use these funds for the design, permitting, and construction of 12, 1.6-megawatt wind turbines, for a combined generation capacity of 19.2 megawatts.

  17. SMART wind turbine rotor. Data analysis and conclusions

    SciTech Connect (OSTI)

    Berg, Jonathan Charles; Barone, Matthew Franklin; Yoder, Nathanael C.

    2014-01-01

    The Wind Energy Technologies department at Sandia National Laboratories has developed and field tested a wind turbine rotor with integrated trailing-edge flaps designed for active control of the rotor aerodynamics. The SMART Rotor project was funded by the Wind and Water Power Technologies Office of the U.S. Department of Energy (DOE) and was conducted to demonstrate active rotor control and evaluate simulation tools available for active control research. This report documents the data post-processing and analysis performed to date on the field test data. Results include the control capability of the trailing edge flaps, the combined structural and aerodynamic damping observed through application of step actuation with ensemble averaging, direct observation of time delays associated with aerodynamic response, and techniques for characterizing an operating turbine with active rotor control.

  18. 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.

  19. Effects of Changing Atmospheric Conditions on Wind Turbine Performance (Poster)

    SciTech Connect (OSTI)

    Clifton, A.

    2012-12-01

    Multi-megawatt, utility-scale wind turbines operate in turbulent and dynamic winds that impact turbine performance in ways that are gradually becoming better understood. This poster presents a study made using a turbulent flow field simulator (TurbSim) and a Turbine aeroelastic simulator (FAST) of the response of a generic 1.5 MW wind turbine to changing inflow. The turbine power output is found to be most sensitive to wind speed and turbulence intensity, but the relationship depends on the wind speed with respect to the turbine's rated wind speed. Shear is found to be poorly correlated to power. A machine learning method called 'regression trees' is used to create a simple model of turbine performance that could be used as part of the wind resource assessment process. This study has used simple flow fields and should be extended to more complex flows, and validated with field observations.

  20. Documentation, User Support, and Verification of Wind Turbine and Plant Models

    SciTech Connect (OSTI)

    Robert Zavadil; Vadim Zheglov; Yuriy Kazachkov; Bo Gong; Juan Sanchez; Jun Li

    2012-09-18

    As part of the Utility Wind Energy Integration Group (UWIG) and EnerNex's Wind Turbine Modeling Project, EnerNex has received ARRA (federal stimulus) funding through the Department of Energy (DOE) to further the progress of wind turbine and wind plant models. Despite the large existing and planned wind generation deployment, industry-standard models for wind generation have not been formally adopted. Models commonly provided for interconnection studies are not adequate for use in general transmission planning studies, where public, non-proprietary, documented and validated models are needed. NERC MOD (North American Electric Reliability Corporation) reliability standards require that power flow and dynamics models be provided, in accordance with regional requirements and procedures. The goal of this project is to accelerate the appropriate use of generic wind turbine models for transmission network analysis by: (1) Defining proposed enhancements to the generic wind turbine model structures that would allow representation of more advanced; (2) Comparative testing of the generic models against more detailed (and sometimes proprietary) versions developed by turbine vendors; (3) Developing recommended parameters for the generic models to best mimic the performance of specific commercial wind turbines; (4) Documenting results of the comparative simulations in an application guide for users; (5) Conducting technology transfer activities in regional workshops for dissemination of knowledge and information gained, and to engage electric power and wind industry personnel in the project while underway; (6) Designing of a "living" homepage to establish an online resource for transmission planners.

  1. Palmetto Wind Research Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Research Project Jump to: navigation, search Name Palmetto Wind Research Project Facility Palmetto Wind Research Project Sector Wind energy Facility Type Offshore Wind...

  2. Wildcat 1 Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Wildcat 1 Wind Project Jump to: navigation, search Name Wildcat 1 Wind Project Facility Wildcat 1 Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  3. Springview II Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Springview II Wind Project Jump to: navigation, search Name Springview II Wind Project Facility Springview II Wind Project Sector Wind energy Facility Type Commercial Scale Wind...

  4. Shiloh Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Power Project Jump to: navigation, search Name Shiloh Wind Power Project Facility Shiloh Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  5. Fenton Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Power Project Jump to: navigation, search Name Fenton Wind Power Project Facility Fenton Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  6. Madison Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Power Project Jump to: navigation, search Name Madison Wind Power Project Facility Madison Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  7. Somerset Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Power Project Jump to: navigation, search Name Somerset Wind Power Project Facility Somerset Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  8. Moraine Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Power Project Jump to: navigation, search Name Moraine Wind Power Project Facility Moraine Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  9. Dunlap Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Dunlap Wind Energy Project Jump to: navigation, search Name Dunlap Wind Energy Project Facility Dunlap Wind Energy Project Sector Wind energy Facility Type Commercial Scale Wind...

  10. Howard Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Energy Project Jump to: navigation, search Name Howard Wind Energy Project Facility Howard Wind Energy Project Sector Wind energy Facility Type Community Wind Facility Status...

  11. Wales Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Wales Wind Energy Project Jump to: navigation, search Name Wales Wind Energy Project Facility Wales Wind Energy Project Sector Wind energy Facility Type Small Scale Wind Facility...

  12. Bayonne Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Bayonne Wind Energy Project Jump to: navigation, search Name Bayonne Wind Energy Project Facility Bayonne Wind Energy Project Sector Wind energy Facility Type Community Wind...

  13. Gary Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Gary Wind Energy Project Jump to: navigation, search Name Gary Wind Energy Project Facility Gary Wind Energy Project Sector Wind energy Facility Type Small Scale Wind Facility...

  14. Don Sneve Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Sneve Wind Project Jump to: navigation, search Name Don Sneve Wind Project Facility Don Sneve Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  15. Condon Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Condon Wind Project Jump to: navigation, search Name Condon Wind Project Facility Condon Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  16. Fenner Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Power Project Jump to: navigation, search Name Fenner Wind Power Project Facility Fenner Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  17. Adams Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Project Jump to: navigation, search Name Adams Wind Project Facility Adams Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  18. James Buchanan High School Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    - Yankton School District Wind Project

  19. Mount Nittany Elementary School Wind Turbine | Open Energy Information

    Open Energy Info (EERE)

    - Yankton School District Wind Project

  20. How Does a Wind Turbine Work? | Department of Energy

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

    Does a Wind Turbine Work? How Does a Wind Turbine Work? How does a wind turbine work? Previous Next 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 create electricity. Click NEXT to learn more. Blades Rotor Low Speed Shaft Gear Box High Speed Shaft Generator Anemometer Controller Pitch System Brake Wind Vane Yaw Drive Yaw Motor Tower Nacelle

  1. How a Wind Turbine Works | Department of Energy

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

    a Wind Turbine Works How a Wind Turbine Works June 20, 2014 - 9:09am Addthis How does a wind turbine work? Previous Next 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 create electricity. Click NEXT to learn more. Blades Rotor Low Speed Shaft Gear Box High Speed Shaft Generator Anemometer Controller Pitch System Brake Wind Vane Yaw Drive Yaw Motor

  2. WindPACT Turbine Rotor Design Study: June 2000--June 2002 (Revised)

    SciTech Connect (OSTI)

    Malcolm, D. J.; Hansen, A. C.

    2006-04-01

    This report presents the results of the turbine rotor study completed by Global Energy Concepts (GEC) as part of the U.S. Department of Energy's WindPACT (Wind Partnership for Advanced Component Technologies) project. The purpose of the WindPACT project is to identify technology improvements that will enable the cost of energy from wind turbines to fall to a target of 3.0 cents/kilowatt-hour in low wind speed sites. The study focused on different rotor configurations and the effect of scale on those rotors.

  3. NREL Controllable Grid Interface for Testing MW-Scale Wind Turbine

    Office of Scientific and Technical Information (OSTI)

    Controllable Grid Interface for Testing MW-Scale Wind Turbine Generators (Poster) McDade, M.; Gevorgian, V.; Wallen, R.; Erdman, W. 17 WIND ENERGY WIND TURBINE TESTING;...

  4. SNL Wake Imaging System Solves Wind Turbine Wake Formation Mysteries |

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

    Department of Energy SNL Wake Imaging System Solves Wind Turbine Wake Formation Mysteries SNL Wake Imaging System Solves Wind Turbine Wake Formation Mysteries May 18, 2015 - 4:20pm Addthis Illustration showing a utility-scale wind turbine in a field. A square brown steel shed behind the base of the turbine's tower houses the laser that emits a laser light sheet (illustrated by a green triangle) that travels from the shed to above the turbine downwind of the turbine. A white van parked

  5. Offshore Wind Turbines - Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine: Environmental Effects of Offshore Wind Energy Development

    SciTech Connect (OSTI)

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

    2010-11-23

    Deep C Wind, a consortium headed by the University of Maine will test the first U.S. offshore wind platforms in 2012. In advance of final siting and permitting of the test turbines off Monhegan Island, residents of the island off Maine require reassurance that the noise levels from the test turbines will not disturb them. Pacific Northwest National Laboratory, at the request of the University of Maine, and with the support of the U.S. Department of Energy Wind Program, modeled the acoustic output of the planned test turbines.

  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 reliability database update.

    SciTech Connect (OSTI)

    Peters, Valerie A.; Hill, Roger Ray; Stinebaugh, Jennifer A.; Veers, Paul S.

    2009-03-01

    This report documents the status of the Sandia National Laboratories' Wind Plant Reliability Database. Included in this report are updates on the form and contents of the Database, which stems from a fivestep process of data partnerships, data definition and transfer, data formatting and normalization, analysis, and reporting. Selected observations are also reported.

  8. Fatigue and Reliability of Wind Turbines

    Energy Science and Technology Software Center (OSTI)

    1995-08-17

    FAROW is a computer program that assists in the probalistic analysis of the Fatigue and Reliabiity of Wind turbines. The fatigue lifetime of wind turbine components is calculated using functional forms for important input quantities. Parameters of these functions are defined in an input file as either constants or random variables. The user can select from a library of random variable distribution functions. FAROW uses structural reliability techniques to calculate the mean time to failure,more » probability of failure before a target lifetime, relative importance of each of the random inputs, and the sensitivity of the reliability to all input parameters. Monte Carlo simulation is also available.« less

  9. Safety and Function Test Report for the Viryd CS8 Wind Turbine

    SciTech Connect (OSTI)

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

    2013-10-01

    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. Several turbines were selected for testing at the National Wind Technology Center (NWTC) at the National Renewable Energy Laboratory (NREL) as a part of the Small Wind Turbine Independent Testing project. Safety and function testing is one of up to five tests that may be performed on the turbines. Other tests include duration, power performance, acoustic noise, and power quality. Viryd Technologies, Inc. of Austin, Texas, was the recipient of the DOE grant and provided the turbine for testing.

  10. 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).

  11. Animation: How a Wind Turbine Works | Department of Energy

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

    Resources » Energy Basics » Animation: How a Wind Turbine Works Animation: How a Wind Turbine Works Content on this page requires a newer version of Adobe Flash Player. Get Adobe Flash player A wind turbine works on a simple principle. This animation shows how 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 create electricity. Wind turbines are mounted on a tower to capture the most energy. At 100

  12. Animation: How a Wind Turbine Works | Department of Energy

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

    Animation: How a Wind Turbine Works Animation: How a Wind Turbine Works Content on this page requires a newer version of Adobe Flash Player. Get Adobe Flash player A wind turbine works on a simple principle. This animation shows how 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 create electricity. Wind turbines are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more above

  13. NREL: Awards and Honors - North Wind 100/20 Wind Turbine

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

    North Wind 10020 Wind Turbine Developers: Gerry Nix and Brian Smith, National Renewable Energy Laboratory; Johnathan Lynch, Clint Coleman, Garrett Bywaters, and Rob Roland,...

  14. 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

  15. Wear Analysis of Wind Turbine Gearbox Bearings

    SciTech Connect (OSTI)

    Blau, Peter Julian; Walker, Larry R; Xu, Hanbing; Parten, Randy J; Qu, Jun; Geer, Tom

    2010-04-01

    The objective of this effort was to investigate and characterize the nature of surface damage and wear to wind turbine gearbox bearings returned from service in the field. Bearings were supplied for examination by S. Butterfield and J. Johnson of the National Wind Technology Center (NREL), Boulder, Colorado. Studies consisted of visual examination, optical and electron microscopy, dimensional measurements of wear-induced macro-scale and micro-scale features, measurements of macro- and micro-scale hardness, 3D imaging of surface damage, studies of elemental distributions on fracture surfaces, and examinations of polished cross-sections of surfaces under various etched and non-etched conditions.

  16. Assessment of U.S. Manufacturing Capability for Next-Generation Wind Turbine Drivetrains

    SciTech Connect (OSTI)

    Cotrell, J.; Stelhy, T.

    2013-09-01

    Robust U.S. wind turbine manufacturing capabilities and supply chains are important for the United States to reduce the cost of electricity generated from wind turbines. These capabilities and supply chains are also critical to the invention and commercialization of new wind turbine technologies while providing high-quality jobs. The development of advanced drivetrain technologies for windturbine applications is advancing the state of the art for drivetrain design by producing higher capacity and operating reliability than conventional drivetrains. Advanced drivetrain technologies such as medium-speed and direct-drive generators, silicon-carbide (SiC) IGBT-based power electronics, and high torque density speed increasers require different manufacturing and supply chaincapabilities that present both risks and opportunities for U.S. wind turbine manufacturers and the wind industry as a whole. The primary objective of this project is to assess how advanced drivetrain technologies and trends will impact U.S. wind turbine manufacturing and its supply chains. The U.S. Department of Energy and other industry participants will use the information from this study toidentify domestic manufacturing gaps, barriers, and opportunities for developing U.S. wind turbine manufacturing capabilities and supply chains for next-generation drivetrain technologies. This report also includes recommendations for prioritizing technology areas for possible investments by public, private, or nonprofit entities that will reduce the cost of wind-generated electricity. Suchinvestments foster opportunities to invent and commercialize new wind turbine technologies, and provide high-quality jobs in the United States.

  17. Root region airfoil for wind turbine

    DOE Patents [OSTI]

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

    1995-05-23

    A thick airfoil is described for the root region of the blade of a wind turbine. The airfoil has a thickness in a range from 24%--26% and a Reynolds number in a range from 1,000,000 to 1,800,000. The airfoil has a maximum lift coefficient of 1.4--1.6 that has minimum sensitivity to roughness effects. 3 Figs.

  18. Microsoft Word - Wind Turbine CMMS Data Collection Recommendations...

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

    ... In the case of a standard wind turbine most events that require maintenance cause turbine ... collection system, one of the biggest challenges is ensuring that data is entered for ...

  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. Great Plains Wind Energy Transmission Development Project

    SciTech Connect (OSTI)

    Brad G. Stevens, P.E.; Troy K. Simonsen; Kerryanne M. Leroux

    2012-06-09

    In fiscal year 2005, the Energy & Environmental Research Center (EERC) received funding from the U.S. Department of Energy (DOE) to undertake a broad array of tasks to either directly or indirectly address the barriers that faced much of the Great Plains states and their efforts to produce and transmit wind energy at the time. This program, entitled Great Plains Wind Energy Transmission Development Project, was focused on the central goal of stimulating wind energy development through expansion of new transmission capacity or development of new wind energy capacity through alternative market development. The original task structure was as follows: Task 1 - Regional Renewable Credit Tracking System (later rescoped to Small Wind Turbine Training Center); Task 2 - Multistate Transmission Collaborative; Task 3 - Wind Energy Forecasting System; and Task 4 - Analysis of the Long-Term Role of Hydrogen in the Region. As carried out, Task 1 involved the creation of the Small Wind Turbine Training Center (SWTTC). The SWTTC, located Grand Forks, North Dakota, consists of a single wind turbine, the Endurance S-250, on a 105-foot tilt-up guyed tower. The S-250 is connected to the electrical grid on the 'load side' of the electric meter, and the power produced by the wind turbine is consumed locally on the property. Establishment of the SWTTC will allow EERC personnel to provide educational opportunities to a wide range of participants, including grade school through college-level students and the general public. In addition, the facility will allow the EERC to provide technical training workshops related to the installation, operation, and maintenance of small wind turbines. In addition, under Task 1, the EERC hosted two small wind turbine workshops on May 18, 2010, and March 8, 2011, at the EERC in Grand Forks, North Dakota. Task 2 involved the EERC cosponsoring and aiding in the planning of three transmission workshops in the midwest and western regions. Under Task 3, the

  1. Cape Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Project Jump to: navigation, search Name Cape Wind Project Facility Cape Wind Sector Wind energy Facility Type Offshore wind Facility Status Proposed Owner Cape Wind Developer Cape...

  2. Radar-cross-section reduction of wind turbines. part 1.

    SciTech Connect (OSTI)

    Brock, Billy C.; Loui, Hung; McDonald, Jacob J.; Paquette, Joshua A.; Calkins, David A.; Miller, William K.; Allen, Steven E.; Clem, Paul Gilbert; Patitz, Ward E.

    2012-03-05

    In recent years, increasing deployment of large wind-turbine farms has become an issue of growing concern for the radar community. The large radar cross section (RCS) presented by wind turbines interferes with radar operation, and the Doppler shift caused by blade rotation causes problems identifying and tracking moving targets. Each new wind-turbine farm installation must be carefully evaluated for potential disruption of radar operation for air defense, air traffic control, weather sensing, and other applications. Several approaches currently exist to minimize conflict between wind-turbine farms and radar installations, including procedural adjustments, radar upgrades, and proper choice of low-impact wind-farm sites, but each has problems with limited effectiveness or prohibitive cost. An alternative approach, heretofore not technically feasible, is to reduce the RCS of wind turbines to the extent that they can be installed near existing radar installations. This report summarizes efforts to reduce wind-turbine RCS, with a particular emphasis on the blades. The report begins with a survey of the wind-turbine RCS-reduction literature to establish a baseline for comparison. The following topics are then addressed: electromagnetic model development and validation, novel material development, integration into wind-turbine fabrication processes, integrated-absorber design, and wind-turbine RCS modeling. Related topics of interest, including alternative mitigation techniques (procedural, at-the-radar, etc.), an introduction to RCS and electromagnetic scattering, and RCS-reduction modeling techniques, can be found in a previous report.

  3. Upcoming Funding Opportunity to Develop Larger Wind Turbine Blades |

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

    Department of Energy Larger Wind Turbine Blades Upcoming Funding Opportunity to Develop Larger Wind Turbine Blades February 20, 2015 - 4:55pm Addthis On February 20, 2015 EERE's Wind Program announced a Notice of Intent to issue a funding opportunity titled "U.S. Wind Manufacturing: Larger Blades to Access Greater Wind Resources and Lower Costs." This funding will support the research and development of technological innovations to improve the manufacturing, transportation, and

  4. Turbines in U.S. Waters Will Soon Spin Wind into Electricity | Department

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

    of Energy Turbines in U.S. Waters Will Soon Spin Wind into Electricity Turbines in U.S. Waters Will Soon Spin Wind into Electricity February 24, 2012 - 10:23am Addthis This is an excerpt from the First Quarter 2012 edition of the Wind Program R&D Newsletter. DOE releases Offshore Demonstration Project Solicitation Approximately 75,000 Americans are currently employed by the U.S. wind energy industry, and that's solely for projects on land. Imagine what will happen to job growth in this

  5. Customized DSP-based vibration measurement for wind turbines

    SciTech Connect (OSTI)

    LaWhite, N.E.; Cohn, K.E.

    1996-12-31

    As part of its Advanced Distributed Monitoring System (ADMS) project funded by NREL, Second Wind Inc. is developing a new vibration measurement system for use with wind turbines. The system uses low-cost accelerometers originally designed for automobile airbag crash-detection coupled with new software executed on a Digital Signal Processor (DSP) device. The system is envisioned as a means to monitor the mechanical {open_quotes}health{close_quotes} of the wind turbine over its lifetime. In addition the system holds promise as a customized emergency vibration detector. The two goals are very different and it is expected that different software programs will be executed for each function. While a fast Fourier transform (FFT) signature under given operating conditions can yield much information regarding turbine condition, the sampling period and processing requirements make it inappropriate for emergency condition monitoring. This paper briefly reviews the development of prototype DSP and accelerometer hardware. More importantly, it reviews our work to design prototype vibration alarm filters. Two-axis accelerometer test data from the experimental FloWind vertical axis wind turbine is analyzed and used as a development guide. Two levels of signal processing are considered. The first uses narrow band pre-processing filters at key fundamental frequencies such as the 1P, 2P and 3P. The total vibration energy in each frequency band is calculated and evaluated as a possible alarm trigger. In the second level of signal processing, the total vibration energy in each frequency band is further decomposed using the two-axis directional information. Directional statistics are calculated to differentiate between linear translations and circular translations. After analyzing the acceleration statistics for normal and unusual operating conditions, the acceleration processing system described could be used in automatic early detection of fault conditions. 9 figs.

  6. Superconductivity for Large Scale Wind Turbines

    SciTech Connect (OSTI)

    R. Fair; W. Stautner; M. Douglass; R. Rajput-Ghoshal; M. Moscinski; P. Riley; D. Wagner; J. Kim; S. Hou; F. Lopez; K. Haran; J. Bray; T. Laskaris; J. Rochford; R. Duckworth

    2012-10-12

    A conceptual design has been completed for a 10MW superconducting direct drive wind turbine generator employing low temperature superconductors for the field winding. Key technology building blocks from the GE Wind and GE Healthcare businesses have been transferred across to the design of this concept machine. Wherever possible, conventional technology and production techniques have been used in order to support the case for commercialization of such a machine. Appendices A and B provide further details of the layout of the machine and the complete specification table for the concept design. Phase 1 of the program has allowed us to understand the trade-offs between the various sub-systems of such a generator and its integration with a wind turbine. A Failure Modes and Effects Analysis (FMEA) and a Technology Readiness Level (TRL) analysis have been completed resulting in the identification of high risk components within the design. The design has been analyzed from a commercial and economic point of view and Cost of Energy (COE) calculations have been carried out with the potential to reduce COE by up to 18% when compared with a permanent magnet direct drive 5MW baseline machine, resulting in a potential COE of 0.075 $/kWh. Finally, a top-level commercialization plan has been proposed to enable this technology to be transitioned to full volume production. The main body of this report will present the design processes employed and the main findings and conclusions.

  7. Assiniboine & Sioux Tribes of the Fort Peck Reservation - Wind Development on the Fort Peck Reservation and Energy Options Analysis Project - Project Photos

    Office of Environmental Management (EM)

    Ft Peck Assiniboine & Sioux Tribes Ft Peck Assiniboine & Sioux Tribes Poplar, Montana Poplar, Montana DOE Grant Projects Status Report: DOE Grant Projects Status Report: 1. Wind Development Project 1. Wind Development Project 2. Energy Options Analysis 2. Energy Options Analysis Tracey LeBeau & Jim Williamson Tracey LeBeau & Jim Williamson October 2006 October 2006 2 Wind Project Wind Project * * Two 50KW wind turbines erected July 2006 Two 50KW wind turbines erected July 2006

  8. EA-1792-S1: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project – Castine Harbor Test Site

    Broader source: Energy.gov [DOE]

    This Supplemental EA evaluates the environmental impacts of the University of Maine proposal to use Congressionally directed federal funding, from DOE, to deploy, test and retrieve one 1/8-scale floating wind turbine (20kw) prototype in Castine Harbor, offshore of Castine Maine. This test would be conducted prior to testing at the site 2 miles from Monhegan Island (evaluated under DOE EA-1792).

  9. SMART wind turbine rotor. Design and field test

    SciTech Connect (OSTI)

    Berg, Jonathan Charles; Resor, Brian Ray; Paquette, Joshua A.; White, Jonathan Randall

    2014-01-01

    The Wind Energy Technologies department at Sandia National Laboratories has developed and field tested a wind turbine rotor with integrated trailing-edge flaps designed for active control of rotor aerodynamics. The SMART Rotor project was funded by the Wind and Water Power Technologies Office of the U.S. Department of Energy (DOE) and was conducted to demonstrate active rotor control and evaluate simulation tools available for active control research. This report documents the design, fabrication, and testing of the SMART Rotor. This report begins with an overview of active control research at Sandia and the objectives of this project. The SMART blade, based on the DOE / SNL 9-meter CX-100 blade design, is then documented including all modifications necessary to integrate the trailing edge flaps, sensors incorporated into the system, and the fabrication processes that were utilized. Finally the test site and test campaign are described.

  10. Midsize Wind Turbines for the U.S. Community Wind Market | Department of

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

    Energy Midsize Wind Turbines for the U.S. Community Wind Market Midsize Wind Turbines for the U.S. Community Wind Market A presentation on the midsize wind markets, including town-owned, co-op-owned, and on-site uses. Midsize Wind Turbines for the U.S. Community Wind Market (938.83 KB) More Documents & Publications Deployment Barriers to Distributed Wind Energy: Workshop Report, October 28, 2010 2012 Market Report on U.S. Wind Technologies in Distributed Applications 2012 Market Report

  11. Hardscrabble Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Hardscrabble Wind Power Project Jump to: navigation, search Name Hardscrabble Wind Power Project Facility Hardscrabble Wind Power Project Sector Wind energy Facility Type...

  12. Highmore Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Highmore Wind Energy Project Jump to: navigation, search Name Highmore Wind Energy Project Facility Highmore Wind Energy Project Sector Wind energy Facility Type Commercial Scale...

  13. Stateline Wind Energy Project | Open Energy Information

    Open Energy Info (EERE)

    Energy Project Jump to: navigation, search Name Stateline Wind Energy Project Facility Stateline Wind Energy Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  14. Testing and Modeling of a 3-MW Wind Turbine Using Fully Coupled Simulation Codes (Poster)

    SciTech Connect (OSTI)

    LaCava, W.; Guo, Y.; Van Dam, J.; Bergua, R.; Casanovas, C.; Cugat, C.

    2012-06-01

    This poster describes the NREL/Alstom Wind testing and model verification of the Alstom 3-MW wind turbine located at NREL's National Wind Technology Center. NREL,in collaboration with ALSTOM Wind, is studying a 3-MW wind turbine installed at the National Wind Technology Center(NWTC). The project analyzes the turbine design using a state-of-the-art simulation code validated with detailed test data. This poster describes the testing and the model validation effort, and provides conclusions about the performance of the unique drive train configuration used in this wind turbine. The 3-MW machine has been operating at the NWTC since March 2011, and drive train measurements will be collected through the spring of 2012. The NWTC testing site has particularly turbulent wind patterns that allow for the measurement of large transient loads and the resulting turbine response. This poster describes the 3-MW turbine test project, the instrumentation installed, and the load cases captured. The design of a reliable wind turbine drive train increasingly relies on the use of advanced simulation to predict structural responses in a varying wind field. This poster presents a fully coupled, aero-elastic and dynamic model of the wind turbine. It also shows the methodology used to validate the model, including the use of measured tower modes, model-to-model comparisons of the power curve, and mainshaft bending predictions for various load cases. The drivetrain is designed to only transmit torque to the gearbox, eliminating non-torque moments that are known to cause gear misalignment. Preliminary results show that the drivetrain is able to divert bending loads in extreme loading cases, and that a significantly smaller bending moment is induced on the mainshaft compared to a three-point mounting design.

  15. 10MW Class Direct Drive HTS Wind Turbine: Cooperative Research...

    Office of Scientific and Technical Information (OSTI)

    SEMICONDUCTOR; 20MW CLASS DIRECT DRIVE HTS WIND TURBINE; Commercialization and Technology Transfer Word Cloud More Like This Full Text preview image File size NAView Full Text ...

  16. Microsoft PowerPoint - Sandia CREW 2011 Wind Turbine Reliability...

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

    Wind Turbine Reliability Benchmark U.S. Fleet; Public Report October 2011 Continuous ... Results & Discussion SCADA and data transfer challenges lead to "Unknown Time" * ...

  17. 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.

  18. Senator Bingaman Tells Sandia Wind Turbine Blade Workshop That...

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

    Bingaman Tells Sandia Wind Turbine Blade Workshop That Renewable Energy Is Important to U.S. Policy - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee ...

  19. Barr Engineering Statement of Methodology Rosemount Wind Turbine...

    Energy Savers [EERE]

    Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOEEA-1791 (May 2010) Barr Engineering Statement of Methodology Rosemount...

  20. Sandia Energy - Sandia Develops Tool to Evaluate Wind-Turbine...

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

    Radar Impacts Previous Next Sandia Develops Tool to Evaluate Wind-TurbineRadar Impacts Our nation relies upon a network of radars across the country to support the...

  1. Wind Turbine Manufacturers in the U. S.: Locations and Local...

    Wind Powering America (EERE)

    Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Wind Turbine Manufacturers in the U.S.: Locations and Local Impacts WINDPOWER 2010 Conference...

  2. Federal Interagency Wind Turbine Radar Interference Mitigation Strategy

    Broader source: Energy.gov [DOE]

    Wind development located within the line of sight of radar systems can cause clutter and interference, which at some radars has resulted in significant performance degradation. As wind turbines...

  3. 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...

  4. First wind turbine blade delivered to Pantex | National Nuclear...

    National Nuclear Security Administration (NNSA)

    owned wind farm in the country and will provide approximately 60 percent of the average annual electricity need for the Pantex Plant. First wind turbine blade delivered to Pantex

  5. Full Life Wind Turbine Gearbox Lubricating Fluids

    SciTech Connect (OSTI)

    Lutz, Glenn A.; Jungk, Manfred; Bryant, Jonathan J.; Lauer, Rebecca S.; Chobot, Anthony; Mayer, Tyler; Palmer, Shane; Kauffman, Robert E.

    2012-02-28

    Industrial gear box lubricants typically are hydrocarbon based mineral oils with considerable amounts of additives to overcome the lack of base fluid properties like wear protection, oxidation stability, load carrying capacity, low temperature solidification and drop of viscosity at higher temperatures. For today's wind turbine gearboxes, the requirements are more severe and synthetic hydrocarbon oils are used to improve on this, but all such hydrocarbon based lubricants require significant amounts of Extreme Pressure (EP) additives to meet performance requirements. Perfluoropolyether (PFPE) fluids provide load carrying capacity as an inherent property. During the course of the project with the main tasks of 'Establish a Benchmark', 'Lubricant Evaluation', 'Full Scale Gearbox Trial' and 'Economic Evaluation', the PAO Reference oil exhibited significant changes after laboratory gear testing, in service operation in the field and full scale gearbox trial. Four hydrocarbon base oils were selected for comparison in the benchmarking exercise and showed variation with respect to meeting the requirements for the laboratory micro-pitting tests, while the PFPE fluid exceeded the requirements even with the material taken after the full scale gear box trial. This is remarkable for a lubricant without EP additives. Laboratory bearing tests performed on the PFPE fluids before and after the full scale gear box trial showed the results met requirements for the industry standard. The PFPE fluid successfully completed the full scale gear box test program which included baseline and progressive staged load testing. The evaluation of gears showed no micro-pitting or objectionable wear. By the final stage, lubricant film thickness had been reduced to just 21% of its original value, this was by design and resulted in a lambda ratio of well below 1. This test design scenario of a low lambda ratio is a very undesirable lubrication condition for real world but creates the ability to test

  6. Multi-piece wind turbine rotor blades and wind turbines incorporating same

    DOE Patents [OSTI]

    Moroz,; Mieczyslaw, Emilian [San Diego, CA

    2008-06-03

    A multisection blade for a wind turbine includes a hub extender having a pitch bearing at one end, a skirt or fairing having a hole therethrough and configured to mount over the hub extender, and an outboard section configured to couple to the pitch bearing.

  7. NREL Software Aids Offshore Wind Turbine Designs (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-10-01

    NREL researchers are supporting offshore wind power development with computer models that allow detailed analyses of both fixed and floating offshore wind turbines. While existing computer-aided engineering (CAE) models can simulate the conditions and stresses that a land-based wind turbine experiences over its lifetime, offshore turbines require the additional considerations of variations in water depth, soil type, and wind and wave severity, which also necessitate the use of a variety of support-structure types. NREL's core wind CAE tool, FAST, models the additional effects of incident waves, sea currents, and the foundation dynamics of the support structures.

  8. Wind Turbine Drivetrain Condition Monitoring - An Overview (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.; Yang, W.

    2013-07-01

    High operation and maintenance costs still hamper the development of the wind industry despite its quick growth worldwide. To reduce unscheduled downtime and avoid catastrophic failures of wind turbines and their components have been and will be crucial to further raise the competitiveness of wind power. Condition monitoring is one of the key tools for achieving such a goal. To enhance the research and development of advanced condition monitoring techniques dedicated to wind turbines, we present an overview of wind turbine condition monitoring, discuss current practices, point out existing challenges, and suggest possible solutions.

  9. The 1.5 MW wind turbine of tomorrow

    SciTech Connect (OSTI)

    De Wolff, T.J.; Sondergaard, H.

    1996-12-31

    The Danish company Nordtank is one of the pioneers within the wind turbine industry. Since 1981 Nordtank has installed worldwide more than 2300 wind turbine generators with a total name plate capacity that is exceeding 350 MW. This paper will describe two major wind turbine technology developments that Nordtank has accomplished during the last year: Site Optimization of Nordtank wind turbines: Nordtank has developed a flexible design concept for its WTGs in the 500/600 kW range, in order to offer the optimal WTG solution for any given site and wind regime. Nordtank`s 1.5 MW wind turbine: In September 1995, Nordtank was the first company to install a commercial 1.5 NM WTG. This paper will document the development process, the design as well as operations of the Nordtank 1.5 MW WTG.

  10. NREL and Alstom Celebrate Wind Turbine Installation - News Releases | NREL

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

    NREL and Alstom Celebrate Wind Turbine Installation 3 MW, 60 Hz Alstom ECO 100 Now Fully Operational at National Wind Technology Center April 26, 2011 Golden, Colo., April 26, 2011 - Officials from the U.S. Department of Energy (DOE) and DOE's National Renewable Energy Laboratory (NREL), along with officials from Alstom, today commemorated the successful installation and full capacity operation of a 3 megawatt Alstom ECO 100 wind turbine at NREL's National Wind Technology Center. This event

  11. DOE Lab Releases Wind Turbine Reliability Benchmark Report | Department of

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

    Energy Lab Releases Wind Turbine Reliability Benchmark Report DOE Lab Releases Wind Turbine Reliability Benchmark Report October 1, 2012 - 1:17pm Addthis This is an excerpt from the Third Quarter 2012 edition of the Wind Program R&D Newsletter. The U.S. Department of Energy's Sandia National Laboratories (SNL) recently released its second annual public benchmark report for the Continuous Reliability Enhancement for Wind (CREW) database. CREW is a national reliability database that

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

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

    Design | Department of Energy 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 Documents & Publications U.S. Wind Energy Manufacturing & Supply Chain: A Competitiveness Analysis Final Report DE-EE0005380 - Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems Technical Assessment of Cryo-Compressed Hydrogen Storage

  13. 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.

  14. Wind turbine ring/shroud drive system

    DOE Patents [OSTI]

    Blakemore, Ralph W.

    2005-10-04

    A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric generator. In one embodiment, the electric generator may be cantilevered from the nacelle such that the gear on the generator drive shaft is contacted by the ring gear of the shroud. The shroud also provides protection for the gearing and aids in preventing gear lubricant contamination.

  15. Flutter Speed Predictions for MW-Sized Wind Turbine Blades Don...

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

    Flutter Speed Predictions for MW-Sized Wind Turbine Blades Don W. Lobitz Sandia National ... Leishman, J. G., "Challenges in Modelling the Unsteady Aerodynamics of Wind Turbines," ...

  16. NREL Controllable Grid Interface for Testing MW-Scale Wind Turbine...

    Office of Scientific and Technical Information (OSTI)

    for Testing MW-Scale Wind Turbine Generators (Poster) Citation Details In-Document Search Title: NREL Controllable Grid Interface for Testing MW-Scale Wind Turbine Generators ...

  17. Wind Turbine Blade Flow Fields and Prospects for Active Aerodynamic Control: Preprint

    SciTech Connect (OSTI)

    Schreck, S.; Robinson, M.

    2007-08-01

    This paper describes wind turbine flow fields that can cause adverse aerodynamic loading and can impact active aerodynamic control methodologies currently contemplated for wind turbine applications.

  18. In-field use of laser Doppler vibrometer on a wind turbine blade

    SciTech Connect (OSTI)

    Rumsey, M.; Hurtado, J.; Hansche, B.

    1998-12-31

    One of our primary goals was to determine how well a laser Doppler vibrometer (LDV) could measure the structural dynamic response of a wind turbine that was parked in the field. We performed a series of preliminary tests in the lab to determine the basic limitations of the LDV for this application. We then instrumented an installed parked horizontal axis wind turbine with accelerometers to determine the natural frequencies, damping, and mode shapes of the wind turbine and rotor as a baseline for the LDV and our other tests. We also wanted to determine if LDV modal information could be obtained from a naturally (wind) excited wind turbine. We compared concurrently obtained accelerometer and LDV data in an attempt to assess the quality of the LDV data. Our test results indicate the LDV can be successfully used in the field environment of an installed wind turbine, but with a few restrictions. We were successful in obtaining modal information from a naturally (wind) excited wind turbine in the field, but the data analysis requires a large number of averaged data sets to obtain reasonable results. An ultimate goal of this continuing project is to develop a technique that will monitor the health of a structure, detect damage, and hopefully predict an impending component failure.

  19. 20% Wind Energy by 2030 - Chapter 2: Wind Turbine Technology Summary Slides

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

    2: Wind Turbine Technology Summary Slides Anatomy of a 1.5-MW wind turbine Nacelle enclosing: * Low-speed shaft * Gearbox * Generator, 1.5 MW * Electrical controls * Blade pitch controls Rotor Hub Tower, 80 m Minivan Rotor blades: * Shown feathered * Length, 37-m Larger and taller turbines are needed to capture optimal wind resources Wind power is competitive with wholesale prices Source: Wiser and Bolinger, 2009 Note: Wholesale price range reflects flat block of power across 23 pricing

  20. NREL: Wind Research - Eagles are Making Wind Turbines Safer for...

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

    A bald eagle named Spirit and a golden eagle named Nova recently helped a team of researchers at the National Wind Technology Center (NWTC) collect terabytes of data for a project ...

  1. Vertical-Axis Wind Turbine Mesh Generator

    SciTech Connect (OSTI)

    2014-01-24

    VAWTGen is a mesh generator for creating a finite element beam mesh of arbitrary vertical-axis wind turbines (VAWT). The software accepts input files specifying tower and blade structural and aerodynamic descriptions and constructs a VAWT using a minimal set of inputs. VAWTs with an arbitrary number of blades can be constructed with or without a central tower. Strut connections between the tower and blades can be specified in an arbitrary manner. The software also facilitates specifying arbitrary joints between structural components and concentrated structural tenns (mass and stiffness). The output files which describe the VAWT configuration are intended to be used with the Offshore Wind ENergy Simulation (OWENS) Toolkit software for structural dynamics analysis of VAWTs. Furthermore, VAWTGen is useful for visualizing output from the OWENS analysis software.

  2. Vertical-Axis Wind Turbine Mesh Generator

    Energy Science and Technology Software Center (OSTI)

    2014-01-24

    VAWTGen is a mesh generator for creating a finite element beam mesh of arbitrary vertical-axis wind turbines (VAWT). The software accepts input files specifying tower and blade structural and aerodynamic descriptions and constructs a VAWT using a minimal set of inputs. VAWTs with an arbitrary number of blades can be constructed with or without a central tower. Strut connections between the tower and blades can be specified in an arbitrary manner. The software also facilitatesmore » specifying arbitrary joints between structural components and concentrated structural tenns (mass and stiffness). The output files which describe the VAWT configuration are intended to be used with the Offshore Wind ENergy Simulation (OWENS) Toolkit software for structural dynamics analysis of VAWTs. Furthermore, VAWTGen is useful for visualizing output from the OWENS analysis software.« less

  3. Wind turbine generator with improved operating subassemblies

    DOE Patents [OSTI]

    Cheney, Jr., Marvin C.

    1985-01-01

    A wind turbine includes a yaw spring return assembly to return the nacelle from a position to which it has been rotated by yawing forces, thus preventing excessive twisting of the power cables and control cables. It also includes negative coning restrainers to limit the bending of the flexible arms of the rotor towards the tower, and stop means on the rotor shaft to orient the blades in a vertical position during periods when the unit is upwind when the wind commences. A pendulum pitch control mechanism is improved by orienting the pivot axis for the pendulum arm at an angle to the longitudinal axis of its support arm, and excessive creep is of the synthetic resin flexible beam support for the blades is prevented by a restraining cable which limits the extent of pivoting of the pendulum during normal operation but which will permit further pivoting under abnormal conditions to cause the rotor to stall.

  4. Passive load control for large wind turbines.

    SciTech Connect (OSTI)

    Ashwill, Thomas D.

    2010-05-01

    Wind energy research activities at Sandia National Laboratories focus on developing large rotors that are lighter and more cost-effective than those designed with current technologies. Because gravity scales as the cube of the blade length, gravity loads become a constraining design factor for very large blades. Efforts to passively reduce turbulent loading has shown significant potential to reduce blade weight and capture more energy. Research in passive load reduction for wind turbines began at Sandia in the late 1990's and has moved from analytical studies to blade applications. This paper discusses the test results of two Sandia prototype research blades that incorporate load reduction techniques. The TX-100 is a 9-m long blade that induces bend-twist coupling with the use of off-axis carbon in the skin. The STAR blade is a 27-m long blade that induces bend-twist coupling by sweeping the blade in a geometric fashion.

  5. Calibrated Blade-Element/Momentum Theory Aerodynamic Model of the MARIN Stock Wind Turbine: Preprint

    SciTech Connect (OSTI)

    Goupee, A.; Kimball, R.; de Ridder, E. J.; Helder, J.; Robertson, A.; Jonkman, J.

    2015-04-02

    In this paper, a calibrated blade-element/momentum theory aerodynamic model of the MARIN stock wind turbine is developed and documented. The model is created using open-source software and calibrated to closely emulate experimental data obtained by the DeepCwind Consortium using a genetic algorithm optimization routine. The provided model will be useful for those interested in validating interested in validating floating wind turbine numerical simulators that rely on experiments utilizing the MARIN stock wind turbine—for example, the International Energy Agency Wind Task 30’s Offshore Code Comparison Collaboration Continued, with Correlation project.

  6. Wind Turbine Showcased in Energy Department Headquarters | Department of

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

    Energy Turbine Showcased in Energy Department Headquarters Wind Turbine Showcased in Energy Department Headquarters February 26, 2016 - 9:23am Addthis A Pika Energy wind turbine is the newest addition to the Department of Energy's headquarters lobby in Washington, D.C. | Photo by Mike Mueller, The Hannon Group A Pika Energy wind turbine is the newest addition to the Department of Energy's headquarters lobby in Washington, D.C. | Photo by Mike Mueller, The Hannon Group Unlike utility-scale

  7. The Inside of a Wind Turbine | Department of Energy

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

    The Inside of a Wind Turbine The Inside of a Wind Turbine 1 of 17 Tower: 2 of 17 Tower: Made from tubular steel (shown here), concrete, or steel lattice. Supports the structure of the turbine. Because wind speed increases with height, taller towers enable turbines to capture more energy and generate more electricity. Generator: 3 of 17 Generator: Produces 60-cycle AC electricity; it is usually an off-the-shelf induction generator. High-speed shaft: 4 of 17 High-speed shaft: Drives the generator.

  8. Wind for Schools Project Curriculum Brief (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-08-01

    The U.S. Department of Energy's (DOE's) 20% Wind Energy by 2030 report recommends expanding education to ensure a trained workforce to meet the projected growth of the wind industry and deployment. Although a few U.S. higher education institutions offer wind technology education programs, most are found in community and technical colleges, resulting in a shortage of programs preparing highly skilled graduates for wind industry careers. Further, the United States lags behind Europe (which has more graduate programs in wind technology design and manufacturing) and is in danger of relinquishing the economic benefits of domestic production of wind turbines and related components and services to European countries. DOE's Wind Powering America initiative launched the Wind for Schools project to develop a wind energy knowledge base among future leaders of our communities, states, and nation while raising awareness about wind energy's benefits. This fact sheet provides an overview of wind energy curricula as it relates to the Wind for Schools project.

  9. CgWind: A high-order accurate simulation tool for wind turbines and wind farms

    SciTech Connect (OSTI)

    Chand, K K; Henshaw, W D; Lundquist, K A; Singer, M A

    2010-02-22

    CgWind is a high-fidelity large eddy simulation (LES) tool designed to meet the modeling needs of wind turbine and wind park engineers. This tool combines several advanced computational technologies in order to model accurately the complex and dynamic nature of wind energy applications. The composite grid approach provides high-quality structured grids for the efficient implementation of high-order accurate discretizations of the incompressible Navier-Stokes equations. Composite grids also provide a natural mechanism for modeling bodies in relative motion and complex geometry. Advanced algorithms such as matrix-free multigrid, compact discretizations and approximate factorization will allow CgWind to perform highly resolved calculations efficiently on a wide class of computing resources. Also in development are nonlinear LES subgrid-scale models required to simulate the many interacting scales present in large wind turbine applications. This paper outlines our approach, the current status of CgWind and future development plans.

  10. Wind Turbine Manufacturing Transforms with Three-Dimensional Printing |

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

    Department of Energy Turbine Manufacturing Transforms with Three-Dimensional Printing Wind Turbine Manufacturing Transforms with Three-Dimensional Printing May 19, 2016 - 12:57pm Addthis From medical devices to airplane components, three-dimensional (3-D) printing (also called additive manufacturing) is transforming the manufacturing industry. Now, research that supports the Energy Department's Atmosphere to Electrons (A2e) initiative is applying 3-D-printing processes to create wind turbine

  11. Sandia National Laboratories Develops Tool for Evaluating Wind Turbine-Radar Impacts

    Broader source: Energy.gov [DOE]

    The TSPEAR toolkit supports energy developers that wish to design, analyze, track the progress of wind energy projects. Initially designed to support wind energy development by assessing the interaction between turbines and constraining factors, such as the NAS radar systems, TSPEAR is partially populated with information from existing databases and can integrate custom models and tools used throughout the development process.

  12. Kotzebue Wind Project II | Open Energy Information

    Open Energy Info (EERE)

    II Jump to: navigation, search Name Kotzebue Wind Project II Facility Kotzebue Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  13. Tatanka Wind Project II | Open Energy Information

    Open Energy Info (EERE)

    II Jump to: navigation, search Name Tatanka Wind Project II Facility Tatanka Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  14. Highland Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name Highland Wind Project Facility Highland Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  15. Chamberlain Wind Project | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name Chamberlain Wind Project Facility Chamberlain Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  16. CAES Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Project Jump to: navigation, search Name CAES Wind Project Facility CAES Sector Wind energy Facility Type Community Wind Location ID Coordinates 43.522243, -112.053963...

  17. Kotzebue Wind Project III | Open Energy Information

    Open Energy Info (EERE)

    Kotzebue Wind Project III Facility Kotzebue Wind Project Sector Wind energy Facility Type Small Scale Wind Facility Status In Service Owner Kotzebue Elec. Assoc. Developer Kotzebue...

  18. Project Profile: 10-Megawatt Supercritical Carbon Dioxide Turbine...

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

    Project Profile: 10-Megawatt Supercritical Carbon Dioxide Turbine Project Profile: 10-Megawatt Supercritical Carbon Dioxide Turbine NREL logo -- This project is inactive -- The ...

  19. New Modularization Framework Transforms FAST Wind Turbine Modeling Tool |

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

    Department of Energy Modularization Framework Transforms FAST Wind Turbine Modeling Tool New Modularization Framework Transforms FAST Wind Turbine Modeling Tool January 6, 2014 - 10:00am Addthis 2013qtr4_fast_large.gif This is an excerpt from the Fourth Quarter 2013 edition of the Wind Program R&D Newsletter. The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) recently released an expanded version of its FAST wind turbine computer-aided engineering tool under a

  20. Building the Basic PVC Wind Turbine | Department of Energy

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

    Building the Basic PVC Wind Turbine Building the Basic PVC Wind Turbine Below is information about the student activity/lesson plan from your search. Grades 5-8, 9-12 Subject Wind Energy Summary This plan shows how to make a rugged and inexpensive classroom wind turbine that can be used for lab bench-based blade design experiments. While a few specialized parts are needed (a hub and DC motor), the rest of the components are easily found at most hardware stores. Curriculum Technology, Science

  1. Structural damage identification in wind turbine blades using piezoelectric active sensing with ultrasonic validation

    SciTech Connect (OSTI)

    Claytor, Thomas N; Ammerman, Curtt N; Park, Gyu Hae; Farinholt, Kevin M; Farrar, Charles R; Atterbury, Marie K

    2010-01-01

    This paper gives a brief overview of a new project at LANL in structural damage identification for wind turbines. This project makes use of modeling capabilities and sensing technology to understand realistic blade loading on large turbine blades, with the goal of developing the technology needed to automatically detect early damage. Several structural health monitoring (SHM) techniques using piezoelectric active materials are being investigated for the development of wireless, low power sensors that interrogate sections of the wind turbine blade using Lamb wave propagation data, frequency response functions (FRFs), and time-series analysis methods. The modeling and sensor research will be compared with extensive experimental testing, including wind tunnel experiments, load and fatigue tests, and ultrasonic scans - on small- to mid-scale turbine blades. Furthermore, this study will investigate the effect of local damage on the global response of the blade by monitoring low-frequency response changes.

  2. Systems Performance Analyses of Alaska Wind-Diesel Projects; Selawik, Alaska (Fact Sheet)

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2009-04-01

    This fact sheet summarizes a systems performance analysis of the wind-diesel project in Selawik, Alaska. Data provided for this project include community load data, wind turbine output, diesel plant output, thermal load data, average wind speed, average net capacity factor, optimal net capacity factor based on Alaska Energy Authority wind data, average net wind penetration, and estimated fuel savings.

  3. Systems Performance Analyses of Alaska Wind-Diesel Projects; Toksook Bay, Alaska (Fact Sheet)

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2009-04-01

    This fact sheet summarizes a systems performance analysis of the wind-diesel project in Toksook Bay, Alaska. Data provided for this project include community load data, average wind turbine output, average diesel plant output, thermal load data, average net capacity factor, optimal net capacity factor based on Alaska Energy Authority wind data, average net wind penetration, estimated fuel savings, and wind system availability.

  4. Systems Performance Analyses of Alaska Wind-Diesel Projects; Kotzebue, Alaska (Fact Sheet)

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2009-04-01

    This fact sheet summarizes a systems performance analysis of the wind-diesel project in Kotzebue, Alaska. Data provided for this project include wind turbine output, average wind speed, average net capacity factor, and optimal net capacity factor based on Alaska Energy Authority wind data, estimated fuel savings, and wind system availability.

  5. Energy Department Awards $1.8 Million to Develop Wind Turbine...

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

    to Develop Wind Turbine Blades to Access Better Wind Resources and Reduce Costs Energy Department Awards 1.8 Million to Develop Wind Turbine Blades to Access Better Wind ...

  6. MHK Projects/Yukon River Hydrokinetic Turbine Project | Open...

    Open Energy Info (EERE)

    Yukon River Hydrokinetic Turbine Project < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... "minzoom":false,"mappingservice":"googlem...

  7. Dissipation of turbulence in the wake of a wind turbine

    SciTech Connect (OSTI)

    Lundquist, J. K.; Bariteau, L.

    2014-11-06

    The wake of a wind turbine is characterized by increased turbulence and decreased wind speed. Turbines are generally deployed in large groups in wind farms, and so the behaviour of an individual wake as it merges with other wakes and propagates downwind is critical in assessing wind-farm power production. This evolution depends on the rate of turbulence dissipation in the wind-turbine wake, which has not been previously quantified in field-scale measurements. In situ measurements of winds and turbulence dissipation from the wake region of a multi-MW turbine were collected using a tethered lifting system (TLS) carrying a payload of high-rate turbulence probes. Ambient flow measurements were provided from sonic anemometers on a meteorological tower located near the turbine. Good agreement between the tower measurements and the TLS measurements was established for a case without a wind-turbine wake. When an operating wind turbine is located between the tower and the TLS so that the wake propagates to the TLS, the TLS measures dissipation rates one to two orders of magnitude higher in the wake than outside of the wake. These data, collected between two and three rotor diameters D downwind of the turbine, document the significant enhancement of turbulent kinetic energy dissipation rate within the wind-turbine wake. These wake measurements suggest that it may be useful to pursue modelling approaches that account for enhanced dissipation. Furthermore. comparisons of wake and non-wake dissipation rates to mean wind speed, wind-speed variance, and turbulence intensity are presented to facilitate the inclusion of these measurements in wake modelling schemes.

  8. Dissipation of turbulence in the wake of a wind turbine

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

    Lundquist, J. K.; Bariteau, L.

    2014-11-06

    The wake of a wind turbine is characterized by increased turbulence and decreased wind speed. Turbines are generally deployed in large groups in wind farms, and so the behaviour of an individual wake as it merges with other wakes and propagates downwind is critical in assessing wind-farm power production. This evolution depends on the rate of turbulence dissipation in the wind-turbine wake, which has not been previously quantified in field-scale measurements. In situ measurements of winds and turbulence dissipation from the wake region of a multi-MW turbine were collected using a tethered lifting system (TLS) carrying a payload of high-ratemore » turbulence probes. Ambient flow measurements were provided from sonic anemometers on a meteorological tower located near the turbine. Good agreement between the tower measurements and the TLS measurements was established for a case without a wind-turbine wake. When an operating wind turbine is located between the tower and the TLS so that the wake propagates to the TLS, the TLS measures dissipation rates one to two orders of magnitude higher in the wake than outside of the wake. These data, collected between two and three rotor diameters D downwind of the turbine, document the significant enhancement of turbulent kinetic energy dissipation rate within the wind-turbine wake. These wake measurements suggest that it may be useful to pursue modelling approaches that account for enhanced dissipation. Furthermore. comparisons of wake and non-wake dissipation rates to mean wind speed, wind-speed variance, and turbulence intensity are presented to facilitate the inclusion of these measurements in wake modelling schemes.« less

  9. Wind turbine reliability : a database and analysis approach.

    SciTech Connect (OSTI)

    Linsday, James; Briand, Daniel; Hill, Roger Ray; Stinebaugh, Jennifer A.; Benjamin, Allan S.

    2008-02-01

    The US wind Industry has experienced remarkable growth since the turn of the century. At the same time, the physical size and electrical generation capabilities of wind turbines has also experienced remarkable growth. As the market continues to expand, and as wind generation continues to gain a significant share of the generation portfolio, the reliability of wind turbine technology becomes increasingly important. This report addresses how operations and maintenance costs are related to unreliability - that is the failures experienced by systems and components. Reliability tools are demonstrated, data needed to understand and catalog failure events is described, and practical wind turbine reliability models are illustrated, including preliminary results. This report also presents a continuing process of how to proceed with controlling industry requirements, needs, and expectations related to Reliability, Availability, Maintainability, and Safety. A simply stated goal of this process is to better understand and to improve the operable reliability of wind turbine installations.

  10. Turbine Inflow Characterization at the National Wind Technology Center

    SciTech Connect (OSTI)

    Clifton, A.; Schreck, S.; Scott, G.; Kelley, N.; Lundquist, J. K.

    2012-01-01

    Utility-scale wind turbines operate in dynamic flows that can vary significantly over timescales from less than a second to several years. To better understand the inflow to utility-scale turbines, two inflow towers were installed and commissioned at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center near Boulder, Colorado, in 2011. These towers are 135 m tall and instrumented with a combination of sonic anemometers, cup anemometers, wind vanes, and temperature measurements to characterize the inflow wind speed and direction, turbulence, stability and thermal stratification to two utility-scale turbines. Herein, we present variations in mean and turbulent wind parameters with height, atmospheric stability, and as a function of wind direction that could be important for turbine operation as well as persistence of turbine wakes. Wind speed, turbulence intensity, and dissipation are all factors that affect turbine performance. Our results show that these all vary with height across the rotor disk, demonstrating the importance of measuring atmospheric conditions that influence wind turbine performance at multiple heights in the rotor disk, rather than relying on extrapolation from lower levels.

  11. Turbine Inflow Characterization at the National Wind Technology Center: Preprint

    SciTech Connect (OSTI)

    Clifton, A.; Schreck, S.; Scott, G.; Kelley, N.; Lundquist, J.

    2012-01-01

    Utility-scale wind turbines operate in dynamic flows that can vary significantly over timescales from less than a second to several years. To better understand the inflow to utility-scale turbines, two inflow towers were installed and commissioned at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center near Boulder, Colorado, in 2011. These towers are 135 m tall and instrumented with a combination of sonic anemometers, cup anemometers, wind vanes, and temperature measurements to characterize the inflow wind speed and direction, turbulence, stability and thermal stratification to two utility-scale turbines. Herein, we present variations in mean and turbulent wind parameters with height, atmospheric stability, and as a function of wind direction that could be important for turbine operation as well as persistence of turbine wakes. Wind speed, turbulence intensity, and dissipation are all factors that affect turbine performance. Our results shown that these all vary with height across the rotor disk, demonstrating the importance of measuring atmospheric conditions that influence wind turbine performance at multiple heights in the rotor disk, rather than relying on extrapolation from lower levels.

  12. NREL Announces Partnership Opportunity for Multimegawatt Wind Turbine

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

    Drivetrain Testing - News Releases | NREL Announces Partnership Opportunity for Multimegawatt Wind Turbine Drivetrain Testing March 23, 2011 Golden, Colo., March 21, 2011 - The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) has released its first call for proposals from wind industry companies interested in forming a partnership with NREL to test a multimegawatt wind turbine drivetrain. The drivetrain will be tested in NREL's new 5 megawatt drivetrain test facility,

  13. International Effort Advances Offshore Wind Turbine Design Codes |

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

    Department of Energy International Effort Advances Offshore Wind Turbine Design Codes International Effort Advances Offshore Wind Turbine Design Codes September 12, 2014 - 12:16pm Addthis For the past several years, the U.S. Department of Energy's National Renewable Energy Laboratory has teamed with the Fraunhofer Institute for Wind Energy and Energy System Technology (IWES) in Germany to lead an international effort under the International Energy Agency's (IEA) Task 30 to improve the tools

  14. EA-1611: Colorado Highlands Wind Project, Logan County, Colorado

    Broader source: Energy.gov [DOE]

    DOE’s Western Area Power Administration prepared an EA in 2009 to assess the potential environmental impacts of interconnecting the proposed Colorado Highlands Wind Project to Western’s transmission system. The EA analyzed a proposal for 60 wind turbine generators with a total output nameplate capacity of 90 megawatts (MW). Western prepared a supplemental EA to assess the potential environmental impacts of the proposed expansion of the project by 11 wind turbine generators that would add approximately 20 MW. Additional information is available on the Western Area Power Administration webpage for this project.

  15. Orme School Wind Project | Open Energy Information

    Open Energy Info (EERE)

    - Yankton School District Wind Project

  16. Lifting system and apparatus for constructing wind turbine towers

    DOE Patents [OSTI]

    Livingston, Tracy; Schrader, Terry; Goldhardt, James; Lott, James

    2011-02-01

    The disclosed invention is utilized for mounting a wind turbine and blade assembly on the upper end of a wind turbine tower. The invention generally includes a frame or truss that is pivotally secured to the top bay assembly of the tower. A transverse beam is connected to the frame or truss and extends fore of the tower when the frame or truss is in a first position and generally above the tower when in a second position. When in the first position, a wind turbine or blade assembly can be hoisted to the top of the tower. The wind turbine or blade assembly is then moved into position for mounting to the tower as the frame or truss is pivoted to a second position. When the turbine and blade assembly are secured to the tower, the frame or truss is disconnected from the tower and lowered to the ground.

  17. WIND TURBINE DRIVETRAIN TEST FACILITY DATA ACQUISITION SYSTEM

    SciTech Connect (OSTI)

    Mcintosh, J.

    2012-01-03

    The Wind Turbine Drivetrain Test Facility (WTDTF) is a state-of-the-art industrial facility used for testing wind turbine drivetrains and generators. Large power output wind turbines are primarily installed for off-shore wind power generation. The facility includes two test bays: one to accommodate turbine nacelles up to 7.5 MW and one for nacelles up to 15 MW. For each test bay, an independent data acquisition system (DAS) records signals from various sensors required for turbine testing. These signals include resistance temperature devices, current and voltage sensors, bridge/strain gauge transducers, charge amplifiers, and accelerometers. Each WTDTF DAS also interfaces with the drivetrain load applicator control system, electrical grid monitoring system and vibration analysis system.

  18. Capstone Turbine Project | Department of Energy

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

    Capstone Turbine Project Capstone Turbine Project February 5, 2016 - 9:00am Addthis C370 Production Concept Layouts C370 Production Concept Layouts The standard small turbines currently on the market have little or no heat recovery capability and use conventional high temperature nickel alloys that limit engine efficiency. Significant amounts of energy could be saved if technologies were available to allow operation at higher temperatures with substantial heat recovery. To address this

  19. EA-1777: Lincoln Electric's Wind Energy Project in Euclid, OH

    Broader source: Energy.gov [DOE]

    Lincoln Electric proposes to construct and operate a 2.5 MW single turbine wind energy project at Lincoln Electric’s World Headquarters facility located at 22800 Saint Clair Avenue, Euclid, Ohio. The wind turbine would provide 2.5 MW of renewable energy to fulfill up to ten percent (10%) of the Lincoln Electric Headquarters’ annual electricity demand and help to reduce greenhouse gas emissions.

  20. Structural health monitoring of wind turbines

    SciTech Connect (OSTI)

    Simmermacher, T.; James, G.H. III.; Hurtado, J.E.

    1997-09-01

    To properly determine what is needed in a structural health monitoring system, actual operational structures need to be studied. We have found that to effectively monitor the structural condition of an operational structure four areas must be addressed: determination of damage-sensitive parameters, test planning, information condensation, and damage identification techniques. In this work, each of the four areas has been exercised on an operational structure. The structures studied were all be wind turbines of various designs. The experiments are described and lessons learned will be presented. The results of these studies include a broadening of experience in the problems of monitoring actual structures as well as developing a process for implementing such monitoring systems.

  1. Wind turbine rotor hub and teeter joint

    DOE Patents [OSTI]

    Coleman, Clint; Kurth, William T.; Jankowski, Joseph

    1994-10-11

    A rotor hub is provided for coupling a wind turbine rotor blade and a shaft. The hub has a yoke with a body which is connected to the shaft, and extension portions which are connected to teeter bearing blocks, each of which has an aperture. The blocks are connected to a saddle which envelops the rotor blade by one or two shafts which pass through the apertures in the bearing blocks. The saddle and blade are separated by a rubber interface which provides for distribution of stress over a larger portion of the blade. Two teeter control mechanisms, which may include hydraulic pistons and springs, are connected to the rotor blade and to the yoke at extension portions. These control mechanisms provide end-of-stroke damping, braking, and stiffness based on the teeter angle and speed of the blade.

  2. Offshore Code Comparison Collaboration within IEA Wind Task 23: Phase IV Results Regarding Floating Wind Turbine Modeling; Preprint

    SciTech Connect (OSTI)

    Jonkman, J.; Larsen, T.; Hansen, A.; Nygaard, T.; Maus, K.; Karimirad, M.; Gao, Z.; Moan, T.; Fylling, I.

    2010-04-01

    Offshore wind turbines are designed and analyzed using comprehensive simulation codes that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. This paper describes the latest findings of the code-to-code verification activities of the Offshore Code Comparison Collaboration, which operates under Subtask 2 of the International Energy Agency Wind Task 23. In the latest phase of the project, participants used an assortment of codes to model the coupled dynamic response of a 5-MW wind turbine installed on a floating spar buoy in 320 m of water. Code predictions were compared from load-case simulations selected to test different model features. The comparisons have resulted in a greater understanding of offshore floating wind turbine dynamics and modeling techniques, and better knowledge of the validity of various approximations. The lessons learned from this exercise have improved the participants' codes, thus improving the standard of offshore wind turbine modeling.

  3. Panel resonant behavior of wind turbine blades.

    SciTech Connect (OSTI)

    Paquette, Joshua A.; Griffith, Daniel Todd

    2010-03-01

    The principal design drivers in the certification of wind turbine blades are ultimate strength, fatigue resistance, adequate tip-tower clearance, and buckling resistance. Buckling resistance is typically strongly correlated to both ultimate strength and fatigue resistance. A composite shell with spar caps forms the airfoil shape of a blade and reinforcing shear webs are placed inside the blade to stiffen the blade in the flap-wise direction. The spar caps are dimensioned and the shear webs are placed so as to add stiffness to unsupported panel regions and reduce their length. The panels are not the major flap-wise load carrying element of a blade; however, they must be designed carefully to avoid buckling while minimizing blade weight. Typically, buckling resistance is evaluated by consideration of the load-deflection behavior of a blade using finite element analysis (FEA) or full-scale static testing of blades under a simulated extreme loading condition. The focus of this paper is on the use of experimental modal analysis to measure localized resonances of the blade panels. It can be shown that the resonant behavior of these panels can also provide a means to evaluate buckling resistance by means of analytical or experimental modal analysis. Further, panel resonances have use in structural health monitoring by observing changes in modal parameters associated with panel resonances, and use in improving panel laminate model parameters by correlation with test data. In recent modal testing of wind turbine blades, a set of panel modes were measured. This paper will report on the findings of these tests and accompanying numerical and analytical modeling efforts aimed at investigating the potential uses of panel resonances for blade evaluation, health monitoring, and design.

  4. EIS-0418: PrairieWinds Project, South Dakota | Department of...

    Office of Environmental Management (EM)

    General Electric 1.5-MW wind turbine generators, electrical collector lines, collector substation, transmission line, communications system, and wind turbine service access roads. ...

  5. Wind turbine having a direct-drive drivetrain

    DOE Patents [OSTI]

    Bevington, Christopher M.; Bywaters, Garrett L.; Coleman, Clint C.; Costin, Daniel P.; Danforth, William L.; Lynch, Jonathan A.; Rolland, Robert H.

    2011-02-22

    A wind turbine comprising an electrical generator that includes a rotor assembly. A wind rotor that includes a wind rotor hub is directly coupled to the rotor assembly via a simplified connection. The wind rotor and generator rotor assembly are rotatably mounted on a central spindle via a bearing assembly. The wind rotor hub includes an opening having a diameter larger than the outside diameter of the central spindle adjacent the bearing assembly so as to allow access to the bearing assembly from a cavity inside the wind rotor hub. The spindle is attached to a turret supported by a tower. Each of the spindle, turret and tower has an interior cavity that permits personnel to traverse therethrough to the cavity of the wind rotor hub. The wind turbine further includes a frictional braking system for slowing, stopping or keeping stopped the rotation of the wind rotor and rotor assembly.

  6. Wind turbine/generator set and method of making same

    SciTech Connect (OSTI)

    Bevington, Christopher M.; Bywaters, Garrett L.; Coleman, Clint C.; Costin, Daniel P.; Danforth, William L.; Lynch, Jonathan A.; Rolland, Robert H.

    2013-06-04

    A wind turbine comprising an electrical generator that includes a rotor assembly. A wind rotor that includes a wind rotor hub is directly coupled to the rotor assembly via a simplified connection. The wind rotor and generator rotor assembly are rotatably mounted on a central spindle via a bearing assembly. The wind rotor hub includes an opening having a diameter larger than the outside diameter of the central spindle adjacent the bearing assembly so as to allow access to the bearing assembly from a cavity inside the wind rotor hub. The spindle is attached to a turret supported by a tower. Each of the spindle, turret and tower has an interior cavity that permits personnel to traverse therethrough to the cavity of the wind rotor hub. The wind turbine further includes a frictional braking system for slowing, stopping or keeping stopped the rotation of the wind rotor and rotor assembly.

  7. Offshore Wind Projects | Department of Energy

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

    Projects Offshore Wind Projects This report covers the Wind and Water Power Program's offshore wind energy projects from fiscal years 2006 to 2016. Offshore Wind Energy Projects 2006-2016 (4.2 MB) More Documents & Publications Testing, Manufacturing, and Component Development Projects Wind Integration, Transmission, and Resource Assessment and Characterization Projects Wind Integration, Transmission, and Resource Assessment and Characterization Projects

  8. Yaw dynamics of horizontal axis wind turbines

    SciTech Connect (OSTI)

    Hansen, A.C. )

    1992-05-01

    Designers of a horizontal axis wind turbine yaw mechanism are faced with a difficult decision. They know that if they elect to use a yaw- controlled rotor then the system will suffer increased initial cost and increased inherent maintenance and reliability problems. On the other hand, if they elect to allow the rotor to freely yaw they known they will have to account for unknown and random, though bounded, yaw rates. They will have a higher-risk design to trade-off against the potential for cost savings and reliability improvement. The risk of a yaw-free system could be minimized if methods were available for analyzing and understanding yaw behavior. The complexity of yaw behavior has, until recently, discouraged engineers from developing a complete yaw analysis method. The objectives of this work are to (1) provide a fundamental understanding of free-yaw mechanics and the design concepts most effective at eliminating yaw problems, and (2) provide tested design tools and guidelines for use by free-yaw wind systems manufacturers. The emphasis is on developing practical and sufficiently accurate design methods.

  9. Wapsipinicon Wind Project | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name Wapsipinicon Wind Project Facility Wapsipinicon Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner EnXco...

  10. 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.

  11. Aeroelastic stability analysis of a Darrieus wind turbine

    SciTech Connect (OSTI)

    Popelka, D.

    1982-02-01

    An aeroelastic stability analysis has been developed for predicting flutter instabilities on vertical axis wind turbines. The analytical model and mathematical formulation of the problem are described as well as the physical mechanism that creates flutter in Darrieus turbines. Theoretical results are compared with measured experimental data from flutter tests of the Sandia 2 Meter turbine. Based on this comparison, the analysis appears to be an adequate design evaluation tool.

  12. Investigation of Various Wind Turbine Drivetrain Condition Monitoring Techniques (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.

    2011-08-01

    This presentation was given at the 2011 Wind Turbine Reliability Workshop sponsored by Sandia National Laboratories in Albuquerque, NM on August 2-3, 2011. It discusses work for the Gearbox Reliability Collaborative including downtime caused by turbine subsystems, annual failure frequency of turbine subsystems, cost benefits of condition monitoring (CM), the Gearbox Reliability Collaborative's condition monitoring approach and rationale, test setup, and results and observations.

  13. Wind Turbine Inspection Technology Reaches New Heights | GE Global...

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

    Wind Turbine Inspection Technology Reaches New Heights Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new ...

  14. SMART Wind Turbine Rotor: Design and Field Test

    SciTech Connect (OSTI)

    Berg, Jonathan C.; Resor, Brian R.; Paquette, Joshua A.; White, Jonathan R.

    2014-01-29

    This report documents the design, fabrication, and testing of the SMART Rotor. This work established hypothetical approaches for integrating active aerodynamic devices (AADs) into the wind turbine structure and controllers.

  15. Innovative Drivetrain Testing for Wind Turbines Nears Completion

    Office of Energy Efficiency and Renewable Energy (EERE)

    Wind turbines wouldn't do their job without a drivetrain--and EERE's National Renewable Energy Laboratory has developed a new system that promises greater efficiency at less cost.

  16. 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...

  17. Aeroelastic Instabilities of Large Offshore and Onshore Wind Turbines: Preprint

    SciTech Connect (OSTI)

    Bir, G.; Jonkman, J.

    2007-08-01

    This paper examines the aeroelastic stability of a 5-MW conceptual wind turbine mounted on a floating barge and presents results for onshore and offshore configurations for various conditions.

  18. Environmental Wind Projects | Department of Energy

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

    Environmental Wind Projects Environmental Wind Projects This report covers the Wind and Water Power Technologies Office's environmental wind projects from fiscal years 2006 to 2015. Environmental Projects Report 2006-2015 (2.24 MB) More Documents & Publications Testing, Manufacturing, and Component Development Projects Wind Integration, Transmission, and Resource Assessment and Characterization Projects Wind Integration, Transmission, and Resource Assessment and Characterization Pr

  19. Comparison of Wind-Turbine Aeroelastic Codes Used for Certification: Preprint

    SciTech Connect (OSTI)

    Buhl, M. L., Jr.; Manjock, A.

    2006-01-01

    NREL created aeroelastic simulators for horizontal-axis wind turbines accepted by Germanischer Lloyd (GL) WindEnergie GmbH for manufacturers to use for on-shore wind turbine certification.

  20. Sandia Vertical-Axis Wind-Turbine Research Presented at Science...

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

    Vertical-Axis Wind-Turbine Research Presented at Science of Making Torque from Wind ... Twitter Google + Vimeo GovDelivery SlideShare Sandia Vertical-Axis Wind-Turbine Research ...

  1. WINDExchange: Resources and Tools for Siting Wind Turbines

    Wind Powering America (EERE)

    Deployment Activities Printable Version Bookmark and Share Regional Resource Centers Economic Development Siting Resources & Tools Resources for Siting Wind Turbines This page lists information resources such as publications, websites, and news for siting wind turbines. Search the WINDExchange Database Choose a Type of Information All News Publications Web Resource Videos Start Search Clear Search Date State Type of Information Program Area Title 7/19/2016 News Siting Global Partners Launch

  2. Hyannis Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Project Jump to: navigation, search Name Hyannis Wind Project Facility Hyannis Sector Wind energy Facility Type Community Wind Location NE Coordinates 41.998692,...

  3. Systems Performance Analyses of Alaska Wind-Diesel Projects; Kasigluk, Alaska (Fact Sheet)

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2009-04-01

    This fact sheet summarizes a systems performance analysis of the wind-diesel project in Kasigluk, Alaska. Data provided for this project include community load data, average wind turbine output, average diesel plant output, thermal load data, average net capacity factor, average net wind penetration, estimated fuel savings, and wind system availability.

  4. Systems Performance Analyses of Alaska Wind-Diesel Projects; St. Paul, Alaska (Fact Sheet)

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2009-04-01

    This fact sheet summarizes a systems performance analysis of the wind-diesel project in St. Paul, Alaska. Data provided for this project include load data, average wind turbine output, average diesel plant output, dump (controlling) load, average net capacity factor, average net wind penetration, estimated fuel savings, and wind system availability.

  5. DOE/SNL-TTU scaled wind farm technology facility : research opportunities for study of turbine-turbine interaction.

    SciTech Connect (OSTI)

    Barone, Matthew Franklin; White, Jonathan

    2011-09-01

    The proposed DOE/Sandia Scaled Wind Farm Technology Facility (SWiFT) hosted by Texas Tech University at Reese Technology Center in Lubbock, TX, will provide a facility for experimental study of turbine-turbine interaction and complex wind farm aerodynamics. This document surveys the current status of wind turbine wake and turbine-turbine interaction research, identifying knowledge and data gaps that the proposed test site can potentially fill. A number of turbine layouts is proposed, allowing for up to ten turbines at the site.

  6. AWEA Wind Project Siting Seminar

    Broader source: Energy.gov [DOE]

    The AWEA Wind Project Siting Seminar takes an in-depth look at the latest siting challenges and identify opportunities to reduce risks associated with the siting and operation of wind farms to...

  7. NASA Building 12 Wind Turbines | Open Energy Information

    Open Energy Info (EERE)

    in December 2014, the NASA Building 12 installation consists of four Urban Green Energy Eddy GT turbines. The project was constructed as part of a larger Building 12...

  8. Understanding Trends in Wind Turbine Prices Over the Past Decade

    SciTech Connect (OSTI)

    Bolinger, Mark; Wiser, Ryan

    2011-10-26

    Taking a bottom-up approach, this report examines seven primary drivers of wind turbine prices in the United States, with the goal of estimating the degree to which each contributed to the doubling in turbine prices from 2002 through 2008, as well as the subsequent decline in prices through 2010 (our analysis does not extend into 2011 because several of these drivers are best gauged on a full-year basis due to seasonality issues). The first four of these drivers can be considered, at least to some degree, endogenous influences – i.e., those that are largely within the control of the wind industry – and include changes in: 1) Labor costs, which have historically risen during times of tight turbine supply; 2) Warranty provisions, which reflect technology performance and reliability, and are most often capitalized in turbine prices; 3) Turbine manufacturer profitability, which can impact turbine prices independently of costs; and 4) Turbine design, which for the purpose of this analysis is principally manifested through increased turbine size. The other three drivers analyzed in this study can be considered exogenous influences, in that they can impact wind turbine costs but fall mostly outside of the direct control of the wind industry. These exogenous drivers include changes in: 5) Raw materials prices, which affect the cost of inputs to the manufacturing process; 6) Energy prices, which impact the cost of manufacturing and transporting turbines; and 7) Foreign exchange rates, which can impact the dollar amount paid for turbines and components imported into the United States.

  9. Method and apparatus for wind turbine air gap control

    DOE Patents [OSTI]

    Grant, James Jonathan; Bagepalli, Bharat Sampathkumaran; Jansen, Patrick Lee; DiMascio, Paul Stephen; Gadre, Aniruddha Dattatraya; Qu, Ronghai

    2007-02-20

    Methods and apparatus for assembling a wind turbine generator are provided. The wind turbine generator includes a core and a plurality of stator windings circumferentially spaced about a generator longitudinal axis, a rotor rotatable about the generator longitudinal axis wherein the rotor includes a plurality of magnetic elements coupled to a radially outer periphery of the rotor such that an airgap is defined between the stator windings and the magnetic elements and the plurality of magnetic elements including a radially inner periphery having a first diameter. The wind turbine generator also includes a bearing including a first member in rotatable engagement with a radially inner second member, the first member including a radially outer periphery, a diameter of the radially outer periphery of the first member being substantially equal to the first diameter, the rotor coupled to the stator through the bearing such that a substantially uniform airgap is maintained.

  10. 2008 Wind Energy Projects, Wind Powering America (Poster)

    SciTech Connect (OSTI)

    Not Available

    2009-01-01

    The Wind Powering America program produces a poster at the end of every calendar year that depicts new U.S. wind energy projects. The 2008 poster includes the following projects: Stetson Wind Farm in Maine; Dutch Hill Wind Farm in New York; Grand Ridge Wind Energy Center in Illinois; Hooper Bay, Alaska; Forestburg, South Dakota; Elbow Creek Wind Project in Texas; Glacier Wind Farm in Montana; Wray, Colorado; Smoky Hills Wind Farm in Kansas; Forbes Park Wind Project in Massachusetts; Spanish Fork, Utah; Goodland Wind Farm in Indiana; and the Tatanka Wind Energy Project on the border of North Dakota and South Dakota.

  11. Coupled Dynamic Modeling of Floating Wind Turbine Systems: Preprint

    SciTech Connect (OSTI)

    Wayman, E. N.; Sclavounos, P. D.; Butterfield, S.; Jonkman, J.; Musial, W.

    2006-03-01

    This article presents a collaborative research program that the Massachusetts Institute of Technology (MIT) and the National Renewable Energy Laboratory (NREL) have undertaken to develop innovative and cost-effective floating and mooring systems for offshore wind turbines in water depths of 10-200 m. Methods for the coupled structural, hydrodynamic, and aerodynamic analysis of floating wind turbine systems are presented in the frequency domain. This analysis was conducted by coupling the aerodynamics and structural dynamics code FAST [4] developed at NREL with the wave load and response simulation code WAMIT (Wave Analysis at MIT) [15] developed at MIT. Analysis tools were developed to consider coupled interactions between the wind turbine and the floating system. These include the gyroscopic loads of the wind turbine rotor on the tower and floater, the aerodynamic damping introduced by the wind turbine rotor, the hydrodynamic damping introduced by wave-body interactions, and the hydrodynamic forces caused by wave excitation. Analyses were conducted for two floater concepts coupled with the NREL 5-MW Offshore Baseline wind turbine in water depths of 10-200 m: the MIT/NREL Shallow Drafted Barge (SDB) and the MIT/NREL Tension Leg Platform (TLP). These concepts were chosen to represent two different methods of achieving stability to identify differences in performance and cost of the different stability methods. The static and dynamic analyses of these structures evaluate the systems' responses to wave excitation at a range of frequencies, the systems' natural frequencies, and the standard deviations of the systems' motions in each degree of freedom in various wind and wave environments. This article in various wind and wave environments. This article explores the effects of coupling the wind turbine with the floating platform, the effects of water depth, and the effects of wind speed on the systems' performance. An economic feasibility analysis of the two concepts

  12. Final Technical Report Recovery Act: Online Nonintrusive Condition Monitoring and Fault Detection for Wind Turbines

    SciTech Connect (OSTI)

    Wei Qiao

    2012-05-29

    The penetration of wind power has increased greatly over the last decade in the United States and across the world. The U.S. wind power industry installed 1,118 MW of new capacity in the first quarter of 2011 alone and entered the second quarter with another 5,600 MW under construction. By 2030, wind energy is expected to provide 20% of the U.S. electricity needs. As the number of wind turbines continues to grow, the need for effective condition monitoring and fault detection (CMFD) systems becomes increasingly important [3]. Online CMFD is an effective means of not only improving the reliability, capacity factor, and lifetime, but it also reduces the downtime, energy loss, and operation and maintenance (O&M) of wind turbines. The goal of this project is to develop novel online nonintrusive CMFD technologies for wind turbines. The proposed technologies use only the current measurements that have been used by the control and protection system of a wind turbine generator (WTG); no additional sensors or data acquisition devices are needed. Current signals are reliable and easily accessible from the ground without intruding on the wind turbine generators (WTGs) that are situated on high towers and installed in remote areas. Therefore, current-based CMFD techniques have great economic benefits and the potential to be adopted by the wind energy industry. Specifically, the following objectives and results have been achieved in this project: (1) Analyzed the effects of faults in a WTG on the generator currents of the WTG operating at variable rotating speed conditions from the perspective of amplitude and frequency modulations of the current measurements; (2) Developed effective amplitude and frequency demodulation methods for appropriate signal conditioning of the current measurements to improve the accuracy and reliability of wind turbine CMFD; (3) Developed a 1P-invariant power spectrum density (PSD) method for effective signature extraction of wind turbine faults with

  13. Electrical generation using a vertical-axis wind turbine

    SciTech Connect (OSTI)

    Clark, R.N.

    1982-12-01

    Traditionally, windmills have been of the propeller or multiblade types, both of which have their rotational axis parallel to the flow of the wind. A vertical-axis wind turbine has its rotational axis perpendicular to the flow of wind and requires no orientation to keep the rotor in the windstream. The vertical-axis wind turbine operates on the same principle as an airfoil and produces lift and drag as any airfoil. A newly designed 100-kW vertical-axis wind turbine has been operated for one year at the USDA Conservation and Production Research Laboratory, Bushland, TX. The turbine has an induction generator and supplies power to a sprinkler irrigation system with excess power being sold to the electric utility. The turbine begins producing power at 5.5 m/s windspeed and reaches its rated output of 100-kW at 15 m/s. The unit has obtained a peak efficiency of 48% at a windspeed of 8 m/s or 81% of theoretical maximum. Using 17 years of windspeed data from the National Weather Service, the annual energy output is estimated at 200,000 kWh. The unit has experienced several operational problems during its initial testing. Guy cables were enlarged to provide greater stiffness to reduce blade stress levels, lightning shorted the main contactor, and the brake system required a complete redesign and modification. The turbine was operational about 60% of the time.

  14. Wind farm production cost: Optimum turbine size and farm capacity in the actual market

    SciTech Connect (OSTI)

    Laali, A.R.; Meyer, J.L.; Bellot, C.; Louche, A.

    1996-12-31

    Several studies are undertaken in R&D Division of EDF in collaboration with ERASME association in order to have a good knowledge of the wind energy production costs. These studies are performed in the framework of a wind energy monitoring project and concern the influence of a few parameters like wind farm capacity, turbine size and wind speed on production costs, through an analysis of the actual market trend. Some 50 manufacturers and 140 different kind of wind turbines are considered for this study. The minimum production cost is situated at 800/900 kW wind turbine rated power. This point will probably move to more important powers in the future. This study is valid only for average conditions and some special parameters like particular climate conditions or lack of infrastructure for a special site the could modify the results shown on the curves. The variety of wind turbines (rated power as a function of rotor diameter, height and specific rated power) in the actual market is analyzed. A brief analysis of the market trend is also performed. 7 refs., 7 figs.

  15. The development of CACTUS : a wind and marine turbine performance simulation code.

    SciTech Connect (OSTI)

    Barone, Matthew Franklin; Murray, Jonathan

    2010-12-01

    CACTUS (Code for Axial and Cross-flow TUrbine Simulation) is a turbine performance simulation code, based on a free wake vortex method, under development at Sandia National Laboratories (SNL) as part of a Department of Energy program to study marine hydrokinetic (MHK) devices. The current effort builds upon work previously done at SNL in the area of vertical axis wind turbine simulation, and aims to add models to handle generic device geometry and physical models specific to the marine environment. An overview of the current state of the project and validation effort is provided.

  16. Are flying wildlife attracted to (or do they avoid) wind turbines?

    SciTech Connect (OSTI)

    Larkin, Ronald

    2010-03-31

    A DOE-sponsored research project found strong evidence that flying wildlife avoid or are attracted to commercial-scale wind turbines from a distance. Some nocturnally migrating birds avoid flying near turbines and few or none change flight paths to approach them. High-flying bats less often avoid flying near turbines and some are attracted to them from a distance, although bats’ flight paths were often complex and convoluted. The findings are being prepared for submission to a peer-reviewed scientific journal (Larkin, in prep 2013).

  17. Review of Wind Turbine Wake Models and Future Directions (Presentation)

    SciTech Connect (OSTI)

    Churchfield, M. J.

    2013-08-01

    This presentation gives a brief overview to wind turbine wake modeling, ranging from models used in the 1980s up to the present. The presentation shows the strengths and weaknesses of various models and discusses the needs of the wind energy industry and research sectors. Both power production and loads analysis are discussed.

  18. Wind Turbine Blade Design | GE Global Research

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

    Resource Assessment and Characterization Wind Resource Assessment and Characterization A crucial factor in the development, siting, and operation of a wind farm is the ability to assess and characterize available wind resources. The Wind Program supports efforts to accurately define, measure, and forecast the nation's land-based and offshore wind resources. More accurate prediction and measurement of wind speed and direction allow wind farms to supply clean, renewable power to businesses and

  19. Energy Department Awards $1.8 Million to Develop Wind Turbine Blades to

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

    Access Better Wind Resources and Reduce Costs | Department of Energy .8 Million to Develop Wind Turbine Blades to Access Better Wind Resources and Reduce Costs Energy Department Awards $1.8 Million to Develop Wind Turbine Blades to Access Better Wind Resources and Reduce Costs September 15, 2015 - 9:00am Addthis The Energy Department today announced the selection of two organizations to develop larger wind turbine blades that can take advantage of better wind resources and can lower costs.

  20. Reliable, Lightweight Transmissions For Off-Shore, Utility Scale Wind Turbines

    SciTech Connect (OSTI)

    Jean-Claude Ossyra

    2012-10-25

    The objective of this project was to reduce the technical risk for a hydrostatic transmission based drivetrain for high-power utility-size wind turbines. A theoretical study has been performed to validate the reduction of cost of energy (CoE) for the wind turbine, identify risk mitigation strategies for the drive system and critical components, namely the pump, shaft connection and hydrostatic transmission (HST) controls and address additional benefits such as reduced deployment costs, improved torque density and improved mean time between repairs (MTBR).

  1. An assessment of the economic impact of the wind turbine supply chain in Illinois

    SciTech Connect (OSTI)

    Carlson, J. Lon; Loomis, David G.; Payne, James

    2010-08-15

    The enormous growth of wind energy in Illinois and around the country has led to a shortage of wind turbines. Turbine manufacturers have sold out their capacity into 2010. To the extent that Illinois manufacturing can integrate itself into the wind turbine supply chain, Illinois can enjoy the economic benefits from both having wind farms and supplying the parts to build them. (author)

  2. Nine Projects Selected for Funding through University Turbine...

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

    funding through the NETL-managed University Turbine Systems Research Program. The Program funds a portfolio of gas turbine-focused university projects to facilitate the ...

  3. Searchlight Wind Energy Project FEIS Appendix E

    Office of Environmental Management (EM)

    ... Proposed Wind Generation SECTION A. PROJECT INFORMATION 1. Project Name Searchlight Wind Energy Project 4. Location Township... 5. Location Sketch 2. Key Observation Point ...

  4. 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.

  5. Power Performance Test Report for the Viryd CS8 Wind Turbine

    SciTech Connect (OSTI)

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

    2012-12-01

    This report contains the results of the power performance test that was performed on a Viryd CS8 wind turbine as part of the DOE Independent Testing project. The test is an accredited test to the IEC 61400-12-1 power performance standard.

  6. Final Technical Report - Kotzebue Wind Power Project - Volume II

    SciTech Connect (OSTI)

    Rana Zucchi, Global Energy Concepts, LLC; Brad Reeve, Kotzebue Electric Association; DOE Project Officer - Doug Hooker

    2007-10-31

    The Kotzebue Wind Power Project is a joint undertaking of the U.S. Department of Energy (DOE); Kotzebue Electric Association (KEA); and the Alaska Energy Authority (AEA). The goal of the project is to develop, construct, and operate a wind power plant interconnected to a small isolated utility grid in an arctic climate in Northwest Alaska. The primary objective of KEA’s wind energy program is to bring more affordable electricity and jobs to remote Alaskan communities. DOE funding has allowed KEA to develop a multi-faceted approach to meet these objectives that includes wind project planning and development, technology transfer, and community outreach. The first wind turbines were installed in the summer of 1997 and the newest turbines were installed in the spring of 2007. The total installed capacity of the KEA wind power project is 1.16 MW with a total of 17 turbines rated between 65 kW and 100 kW. The operation of the wind power plant has resulted in a wind penetration on the utility system in excess of 35% during periods of low loads. This document and referenced attachments are presented as the final technical report for the U.S. Department of Energy (DOE) grant agreement DE-FG36-97GO10199. Interim deliverables previously submitted are also referenced within this document and where reasonable to do so, specific sections are incorporated in the report or attached as appendices.

  7. Wind Turbine Structural Health Monitoring - Energy Innovation Portal

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

    Structural Health Monitoring Los Alamos National Laboratory Contact LANL About This Technology Technology Marketing SummaryLANL researchers are developing unique sensors in tandem with proprietary high-fidelity finite element models as well as the LANL WindBlade modeling and simulation capability that couples aeroelastic dynamic force loads with atmospheric wind conditions and system environment. The LANL Intelligent Wind Turbine Program is seeking dialogue with potential industrial

  8. Wind Turbine Tower for Storing Hydrogen and Energy - Energy Innovation

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

    Portal Wind Energy Wind Energy Hydrogen and Fuel Cell Hydrogen and Fuel Cell Energy Storage Energy Storage Find More Like This Return to Search Wind Turbine Tower for Storing Hydrogen and Energy National Renewable Energy Laboratory Contact NREL About This Technology Technology Marketing Summary Around the world, there is an increasing demand for satisfying energy requirements in ways that use less or no fossil fuels. These alternatives need to be reliable, cost effective, and environmentally

  9. Methods and apparatus for cooling wind turbine generators

    DOE Patents [OSTI]

    Salamah, Samir A.; Gadre, Aniruddha Dattatraya; Garg, Jivtesh; Bagepalli, Bharat Sampathkumaran; Jansen, Patrick Lee; Carl, Jr., Ralph James

    2008-10-28

    A wind turbine generator includes a stator having a core and a plurality of stator windings circumferentially spaced about a generator longitudinal axis. A rotor is rotatable about the generator longitudinal axis, and the rotor includes a plurality of magnetic elements coupled to the rotor and cooperating with the stator windings. The magnetic elements are configured to generate a magnetic field and the stator windings are configured to interact with the magnetic field to generate a voltage in the stator windings. A heat pipe assembly thermally engaging one of the stator and the rotor to dissipate heat generated in the stator or rotor.

  10. Alstom 3-MW Wind Turbine Installed at NWTC (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-09-01

    The 3-MW Alstom wind turbine was installed at NREL's NWTC in October 2010. Test data will be used to validate advanced turbine design and analysis tools. NREL signed a Cooperative Research and Development Agreement with Alstom in 2010 to conduct certification testing on the company's 3-MW ECO 100 wind turbine and to validate models of Alstom's unique drivetrain concept. The turbine was installed at NREL's National Wind Technology Center (NWTC) in October 2010 and engineers began certification testing in 2011. Tests to be conducted by NREL include a power quality test to finalize the International Electrotechnical Commission (IEC) requirements for type certification of the 60-Hz unit. The successful outcome of this test will enable Alstom to begin commercial production of ECO 100 in the United States. NREL also will obtain additional measurements of power performance, acoustic noise, and system frequency to complement the 50 Hz results previously completed in Europe. After NREL completes the certification testing on the ECO 100, it will conduct long-term testing to validate gearbox performance to gain a better understanding of the machine's unique ALSTOM PURE TORQUE{trademark} drivetrain concept. In conventional wind turbines, the rotor is supported by the shaft-bearing gearbox assembly. Rotor loads are partially transmitted to the gearbox and may reduce gearbox reliability. In the ALSTOM PURE TORQUE concept, the rotor is supported by a cast frame running through the hub, which transfers bending loads directly to the tower. Torque is transmitted to the shaft through an elastic coupling at the front of the hub. According to Alstom, this system will increase wind turbine reliability and reduce operation and maintenance costs by isolating the gearbox from rotor loads. Gearbox reliability has challenged the wind energy industry for more than two decades. Gearbox failures require expensive and time-consuming replacement, significantly increasing the cost of wind plant

  11. Wild Horse Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Power Project Jump to: navigation, search Name Wild Horse Wind Power Project Facility Wild Horse Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind...

  12. Mill Run Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Run Wind Power Project Jump to: navigation, search Name Mill Run Wind Power Project Facility Mill Run Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind...

  13. Advanced Offshore Wind Turbine/Foundation Concept for the Great Lakes

    SciTech Connect (OSTI)

    Afjeh, Abdollah A.; Windpower, Nautica; Marrone, Joseph; Wagner, Thomas

    2013-08-29

    This project investigated a conceptual 2-bladed rotor wind turbine design and assessed its feasibility for installation in the Great Lakes. The levelized cost of energy was used for this purpose. A location in Lake Erie near the coast of Cleveland, Ohio was selected as the application site. The loading environment was defined using wind and wave data collected at a weather station in Lake Erie near Cleveland. In addition, the probability distributions of the annual significant wave height and wind speed were determined. A model of the dependence of the above two quantities was also developed and used in the study of wind turbine system loads. Loads from ice floes and ridges were also included.The NREL 5 MW 3-bladed rotor wind turbine concept was used as the baseline design. The proposed turbine design employs variable pitch blade control with tip-brakes and a teeter mechanism. The rotor diameter, rated power and the tower dimensions were selected to closely match those of the NREL 5 MW wind turbine.A semi-floating gravity base foundation was designed for this project primarily to adapt to regional logistical constraints to transport and install the gravity base foundation. This foundation consists of, from bottom to top, a base plate, a buoyancy chamber, a taper zone, a column (with ice cone), and a service platform. A compound upward-downward ice cone was selected to secure the foundation from moving because of ice impact.The turbine loads analysis was based on International ElectroTechnical Committee (IEC) Standard 61400-1, Class III winds. The NREL software FAST was the primary computational tool used in this study to determine all design load cases. An initial set of studies of the dynamics of wind turbines using Automatic Dynamic Analysis of Mechanical Systems (ADAMS) demonstrated that FAST and ADAMS load predictions were comparable. Because of its relative simplicity and short run times, FAST was selected for this study. For ice load calculations, a method

  14. EA-1970: Fishermen’s Energy LLC Offshore Wind Demonstration Project, offshore Atlantic City, New Jersey

    Broader source: Energy.gov [DOE]

    DOE is proposing to provide funding to Fishermen’s Atlantic City Windfarm, LLC to construct and operate up to six wind turbine generators, for an offshore wind demonstration project, approximately 2.8 nautical miles off the coast of Atlantic City, NJ. The proposed action includes a cable crossing from the turbines to an on-shore existing substation.

  15. Session: Wind industry project development

    SciTech Connect (OSTI)

    Gray, Tom; Enfield, Sam

    2004-09-01

    This first session at the Wind Energy and Birds/Bats workshop consisted of two presentations followed by a question and answer period. The session was intended to provide a general overview of wind energy product development, from the industry's perspective. Tom Gray of AWEA presented a paper titled ''State of the Wind Energy Industry in 2004'', highlighting improved performance and lower cost, efforts to address avian impacts, a status of wind energy in comparison to other energy-producing sources, and ending on expectations for the near future. Sam Enfield of Atlantic Renewable Energy Corporation presented a paper titled ''Key Factors for Consideration in Wind Plant Siting'', highlighting factors that wind facility developers must consider when choosing a site to build wind turbines and associated structures. Factors covered include wind resources available, ownership and land use patterns, access to transmission lines, accessibility and environmental impacts. The question and answer sum mary included topics related to risk taking, research and development, regulatory requirements, and dealing with utilities.

  16. Aquantis C-Plane Ocean Current Turbine Project

    SciTech Connect (OSTI)

    Fleming, Alex

    2015-09-16

    The Aquantis 2.5 MW Ocean Current Generation Device technology developed by Dehlsen Associates, LLC (DA) is a derivation of wind power generating technology (a means of harnessing a slow moving fluid) adapted to the ocean environment. The Aquantis Project provides an opportunity for accelerated technological development and early commercialization, since it involves the joining of two mature disciplines: ocean engineering and wind turbine design. The Aquantis Current Plane (C-Plane) technology is an ocean current turbine designed to extract kinetic energy from a current flow. The technology is capable of achieving competitively priced, continuous, base-load, and reliable power generation from a source of renewable energy not before possible in this scale or form.

  17. Omaha Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Omaha Public Power District Developer Omaha Public Power District Energy...

  18. AWEA Wind Resource & Project Energy Assessment

    Broader source: Energy.gov [DOE]

    Join the wind industry's leading owners, project developers, and wind assessors as they share latest challenges facing the wind resource assessment community. During this technical event you will...

  19. Sherrod Elementary Wind Project | Open Energy Information

    Open Energy Info (EERE)

    search Name Sherrod Elementary Wind Project Facility Sherrod Elementary Sector Wind energy Facility Type Community Wind Location AK Coordinates 61.648163,...

  20. Dakota Valley Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name Dakota Valley Wind Project Facility Dakota Valley Sector Wind energy Facility Type Community Wind Location SD Coordinates 42.548355, -96.524841...

  1. KDOT Osborne Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name KDOT Osborne Wind Project Facility KDOT Osborne Sector Wind energy Facility Type Community Wind Location KS Coordinates 39.456077, -98.695613...

  2. Greenbush Kansas Wind Project | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name Greenbush Kansas Wind Project Facility Greenbush Kansas Sector Wind energy Facility Type Community Wind Location KS Coordinates 37.51403, -94.987839...

  3. KDOT Grainfield Wind Project | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name KDOT Grainfield Wind Project Facility KDOT Grainfield Sector Wind energy Facility Type Community Wind Location KS Coordinates 39.11006, -100.468124...

  4. Northumberland Schools Wind Project | Open Energy Information

    Open Energy Info (EERE)

    search Name Northumberland Schools Wind Project Facility Northumberland Schools Sector Wind energy Facility Type Community Wind Location VA Coordinates 37.917591, -76.473579...

  5. Miller Schools Wind Project | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name Miller Schools Wind Project Facility Miller Schools Sector Wind energy Facility Type Community Wind Location SD Coordinates 44.521069, -98.979942...

  6. Smoky Valley Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name Smoky Valley Wind Project Facility Smoky Valley Sector Wind energy Facility Type Community Wind Location KS Coordinates 38.578766, -97.683563...

  7. Cedar Rapids Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name Cedar Rapids Wind Project Facility Cedar Rapids Sector Wind energy Facility Type Community Wind Location NE Coordinates 41.562199, -98.148048...

  8. Kit Carson Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name Kit Carson Wind Project Facility Kit Carson Sector Wind energy Facility Type Community Wind Facility Status In Service Address 102 W 5th...

  9. North Dakota Company Wins Praise for Wind Projects | Department of Energy

    Energy Savers [EERE]

    North Dakota Company Wins Praise for Wind Projects North Dakota Company Wins Praise for Wind Projects March 12, 2010 - 4:48pm Addthis Construction teams set up a turbine foundation in Minot, N.D. | Photo courtesy of Basin Electric Power Cooperative Construction teams set up a turbine foundation in Minot, N.D. | Photo courtesy of Basin Electric Power Cooperative Stephen Graff Former Writer & editor for Energy Empowers, EERE Wind energy is taking off in the Dakotas, contributing hundreds of

  10. Full-scale wind turbine rotor aerodynamics research

    SciTech Connect (OSTI)

    Simms, D A; Butterfield, C P

    1994-11-01

    The United States Department of Energy and the National Renewable Energy Laboratory (NREL) are conducting research to improve wind turbine technology at the NREL National Wind Technology Center (NWTC). One program, the Combined Experiment, has focused on making measurements needed to understand aerodynamic and structural responses of horizontal-axis wind turbines (HAWT). A new phase of this program, the Unsteady Aerodynamics Experiment, will focus on quantifying unsteady aerodynamic phenomena prevalent in stall-controlled HAWTs. Optimally twisted blades and innovative instrumentation and data acquisition systems will be used in these tests. Data can now be acquired and viewed interactively during turbine operations. This paper describes the NREL Unsteady Aerodynamics Experiment and highlights planned future research activities.

  11. Adaptive pitch control for variable speed wind turbines

    DOE Patents [OSTI]

    Johnson, Kathryn E.; Fingersh, Lee Jay

    2012-05-08

    An adaptive method for adjusting blade pitch angle, and controllers implementing such a method, for achieving higher power coefficients. Average power coefficients are determined for first and second periods of operation for the wind turbine. When the average power coefficient for the second time period is larger than for the first, a pitch increment, which may be generated based on the power coefficients, is added (or the sign is retained) to the nominal pitch angle value for the wind turbine. When the average power coefficient for the second time period is less than for the first, the pitch increment is subtracted (or the sign is changed). A control signal is generated based on the adapted pitch angle value and sent to blade pitch actuators that act to change the pitch angle of the wind turbine to the new or modified pitch angle setting, and this process is iteratively performed.

  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. Lithium-Ion Ultracapacitors integrated with Wind Turbines Power Conversion Systems to Extend Operating Life and Improve Output Power Quality

    SciTech Connect (OSTI)

    Adel Nasiri

    2012-05-23

    In this project we designed and modeled a system for a full conversion wind turbine and built a scaled down model which utilizes Lithium-Ion Capacitors on the DC bus. One of the objectives is to reduce the mechanical stress on the gearbox and drivetrain of the wind turbine by adjusting the torque on generator side according to incoming wind power. Another objective is to provide short-term support for wind energy to be more “grid friendly” in order to ultimately increase wind energy penetration. These supports include power smoothing, power ramp rate limitation, low voltage ride through, and frequency (inertia) support. This research shows how energy storage in small scale and in an economical fashion can make a significant impact on performance of wind turbines. Gearbox and drivetrain premature failures are among high cost maintenance items for wind turbines. Since the capacitors are directly applied on the turbine DC bus and their integration does not require addition hardware, the cost of the additional system can be reasonable for the wind turbine manufacturers and utility companies.

  14. Turbines

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

    Turbines Hydrogen Turbine photo Hydrogen Turbines The NETL Hydrogen Turbine Program manages a research, development, and demonstration (RD&D) portfolio of projects designed to remove environmental concerns about the future use of fossil fuels through development of revolutionary, near-zero-emission advanced turbine technologies. More Information Advanced Research The American Recovery and Reinvestment Act (ARRA) funds gas turbine technology research and development to improve the efficiency,

  15. Wind turbine with automatic pitch and yaw control

    DOE Patents [OSTI]

    Cheney, Jr., Marvin Chapin; Spierings, Petrus A. M.

    1978-01-01

    A wind turbine having a flexible central beam member supporting aerodynamic blades at opposite ends thereof and fabricated of uni-directional high tensile strength material bonded together into beam form so that the beam is lightweight, and has high tensile strength to carry the blade centrifugal loads, low shear modulus to permit torsional twisting thereof for turbine speed control purposes, and adequate bending stiffness to permit out-of-plane deflection thereof for turbine yard control purposes. A selectively off-set weighted pendulum member is pivotally connected to the turbine and connected to the beam or blade so as to cause torsional twisting thereof in response to centrifugal loading of the pendulum member for turbine speed control purposes.

  16. 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 Content Group Activity By term Q & A Feeds Groups Menu You...

  17. Photo of the Week: Argonne's 10 kW Wind Turbine | Department...

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

    Photo of the Week: Argonne's 10 kW Wind Turbine Photo of the Week: Argonne's 10 kW Wind Turbine November 9, 2012 - 11:57am Addthis At Argonne National Laboratory, the power...

  18. AWEA O&M Recommended Practices Series Part VII: Wind Turbine...

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

    AWEA O&M Recommended Practices Series Part VII: Wind Turbine Gear Lubricant Flushing Procedures AWEA O&M Recommended Practices Series Part VII: Wind Turbine Gear Lubricant Flushing...

  19. 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 ...

  20. Gamesa Installs 2-MW Wind Turbine at NWTC | Department of Energy

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

    Gamesa Installs 2-MW Wind Turbine at NWTC Gamesa Installs 2-MW Wind Turbine at NWTC December 19, 2011 - 3:12pm Addthis This is an excerpt from the Fourth Quarter 2011 edition of ...

  1. Memorandum of Understanding between the U.S. Wind Turbine Manufacturer...

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

    and the signing members of the wind turbine industry (the Parties) agree to work ... of Understanding between the U.S. Wind Turbine Manufacturers and the U.S. Department of ...

  2. Photo of the Week: Argonne's 10 kW Wind Turbine | Department...

    Office of Environmental Management (EM)

    Argonne's 10 kW Wind Turbine Photo of the Week: Argonne's 10 kW Wind Turbine November 9, 2012 - 11:57am Addthis At Argonne National Laboratory, the power generated by this 10 kW ...

  3. Department of Energy to Invest up to $4 Million for Wind Turbine...

    Office of Environmental Management (EM)

    up to 4 Million for Wind Turbine Blade Testing Facilities Department of Energy to Invest up to 4 Million for Wind Turbine Blade Testing Facilities June 25, 2007 - 2:07pm Addthis ...

  4. Dual-Axis Resonance Testing of Wind Turbine Blades - Energy Innovation...

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

    Return to Search Dual-Axis Resonance Testing of Wind Turbine Blades National Renewable ... of time needed to fatigue test wind turbine blades.
    Dual-axis testing can ...

  5. First U.S. Grid-Connected Offshore Wind Turbine Installed Off...

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

    A 65-foot tall, 20-kilowatt wind turbine with a white rotor and a yellow tower on a ... Academy and Cianbro to launch a deepwater offshore floating wind turbine near Bangor. ...

  6. A drone's-eye view of a wind turbine | GE Global Research

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

    Flying above the innovative ecoROTR wind turbine in a drone Click to email this to a ... Flying above the innovative ecoROTR wind turbine in a drone GE spent a week flying ...

  7. Influence of Control on the Pitch Damping of a Floating Wind Turbine

    SciTech Connect (OSTI)

    Jonkman, J. M.

    2008-03-01

    This paper presents the influence of conventional wind turbine blade-pitch control actions on the pitch damping of a wind turbine supported by an offshore floating barge with catenary moorings.

  8. File:Wind-turbine-economics-lp-HS.pdf | Open Energy Information

    Open Energy Info (EERE)

    Wind-turbine-economics-lp-HS.pdf Jump to: navigation, search File File history File usage Metadata File:Wind-turbine-economics-lp-HS.pdf Size of this preview: 463 599 pixels....

  9. 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.

  10. Wind Turbine Gearbox Failure Modes - A Brief (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.; McDade, M.; Errichello, R.

    2011-10-01

    Wind turbine gearboxes are not always meeting 20-year design life. Premature failure of gearboxes increases cost of energy, turbine downtime, unplanned maintenance, gearbox replacement and rebuild, and increased warranty reserves. The problem is widespread, affects most Original Equipment Manufacturers, and is not caused by manufacturing practices. There is a need to improve gearbox reliability and reduce turbine downtime. The topics of this presentation are: GRC (Gearbox Reliability Collaborative) technical approach; Gearbox failure database; Recorded incidents summary; Top failure modes for bearings; Top failure modes for gears; GRC test gearbox; Bearing nomenclature; Test history; Real damage; Gear sets; Bearings; Observations; and Summary. 5 refs.

  11. Analysis of the effects of integrating wind turbines into a conventional utility: a case study. Final report

    SciTech Connect (OSTI)

    Goldenblatt, M.K.; Wegley, H.L.; Miller, A.H.

    1982-08-01

    The impact on a utility incorporating wind turbine generation due to wind speed sampling frequency, wind turbine performance model, and wind speed forecasting accuracy is examined. The utility analyzed in the study was the Los Angeles Department of Water and Power and the wind turbine assumed was the MOD-2. The sensitivity of the economic value of wind turbine generation to wind speed sampling frequency and wind turbine modeling technique is examined as well as the impact of wind forecasting accuracy on utility operation and production costs. Wind speed data from San Gorgonio Pass, California during 1979 are used to estimate wind turbine performance using four different simulation methods. (LEW)

  12. Analysis of the effects of integrating wind turbines into a conventional utility: a case study. Revised final report

    SciTech Connect (OSTI)

    Goldenblatt, M.K.; Wegley, H.L.; Miller, A.H.

    1983-03-01

    The impact on a utility incorporating wind turbine generation due to wind speed sampling frequency, wind turbine performance model, and wind speed forecasting accuracy is examined. The utility analyzed in this study was the Los Angeles Department of Water and Power, and the wind turbine assumed was the MOD-2. The sensitivity of the economic value of wind turbine generation to wind speed sampling frequency and wind turbine modeling technique is examined as well as the impact of wind forecasting accuracy on utility operation and production costs. Wind speed data from San Gorgonio Pass, California during 1979 are used to estimate wind turbine performance using four different simulation methods. (LEW)

  13. Torque ripple in a Darrieus, vertical axis wind turbine

    SciTech Connect (OSTI)

    Reuter, R.C. Jr.

    1980-09-01

    Interaction between a steady wind and a rotating, Darrieus, vertical axis wind turbine produces time periodic aerodynamic loads which cause time dependent torque variations, referred to as torque ripple, to occur in the mechanical link between the turbine and the electrical generator. There is concern for the effect of torque ripple upon fatigue life of drive train components and upon power quality. An analytical solution characterizing the phenomenon of torque ripple has been obtained which is based upon a Fourier expansion of the time dependent features of the problem. Numerical results for torque ripple, some experimental data, determination of acceptable levels and methods of controlling it, are presented and discussed.

  14. EA-1857: Wind Turbine Power Generation Complex at Idaho National Laboratory

    Broader source: Energy.gov [DOE]

    This EA would evaluate the environmental impacts of the proposed wind turbine power generation complex at Idaho National Laboratory, Idaho.

  15. Simulating Turbulent Wind Fields for Offshore Turbines in Hurricane-Prone Regions (Poster)

    SciTech Connect (OSTI)

    Guo, Y.; Damiani, R.; Musial, W.

    2014-04-01

    Extreme wind load cases are one of the most important external conditions in the design of offshore wind turbines in hurricane prone regions. Furthermore, in these areas, the increase in load with storm return-period is higher than in extra-tropical regions. However, current standards have limited information on the appropriate models to simulate wind loads from hurricanes. This study investigates turbulent wind models for load analysis of offshore wind turbines subjected to hurricane conditions. Suggested extreme wind models in IEC 61400-3 and API/ABS (a widely-used standard in oil and gas industry) are investigated. The present study further examines the wind turbine response subjected to Hurricane wind loads. Three-dimensional wind simulator, TurbSim, is modified to include the API wind model. Wind fields simulated using IEC and API wind models are used for an offshore wind turbine model established in FAST to calculate turbine loads and response.

  16. Energy 101: Wind Turbines | Department of Energy

    Energy Savers [EERE]

    One thing you might not realize is that wind is actually a form of solar energy. This is because wind is produced by the sun heating Earth's atmosphere, the rotation of the earth, ...

  17. 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.

  18. Review of Operation and Maintenance Experience in the DOE-EPRI Wind Turbine Verification Program

    SciTech Connect (OSTI)

    Conover, K.; VandenBosche, J.; Rhoads, H.; Smith, B.

    2000-09-05

    All the projects within the US Department of Energy (DOE) Electrical Power Research Institute (EPRI) Wind Turbine Verification Program (TVP) are now in operation. As a result, the emphasis of the owners and operators has shifted from installation and commissioning to a focus on optimizing the operation and maintenance (O and M) activities of the projects. Each project utilizes a unique strategy for performing O and M. O and M personnel for projects in Searsburg, Vermont; Glenmore, Wisconsin; Algona, Iowa; Springview, Nebraska; Kotzebue, Alaska; and Big Spring, Texas include on-site vendor representatives, dedicated utility personnel, and utility personnel who split their time between the wind turbines and other utility responsibilities. Each project has its own set of priorities for balancing turbine availability against safety, minimizing overtime pay, and other utility responsibilities. Various strategies have also been employed to ensure access to tools and spare parts. This paper compares and contrasts the various O and M strategies at TVP projects and reviews the causes of turbine downtime and the frequency and duration of faults.

  19. Wessington Springs Wind Project | Open Energy Information

    Open Energy Info (EERE)

    - Yankton School District Wind Project

  20. Community Renewable Energy Deployment: Haxtun Wind Project |...

    Open Energy Info (EERE)

    Haxtun Wind Project Jump to: navigation, search Name Community Renewable Energy Deployment: Haxtun Wind Project AgencyCompany Organization US Department of Energy Focus Area...