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Estimates of the number of large amplitude gusts

Description: Preliminary estimates are presented of the number of occurrences of large amplitude gusts for use in the design of wind energy conversion systems. Existing turbulence information has been combined with an assumed wind speed distribution to arrive at the estimates. The number of large amplitude gusts per year is treated as a function of the annual mean wind speed and terrain roughness. This treatment is based upon the assumptions that the atmosphere has neutral stability during high winds and th… more
Date: March 1, 1978
Creator: Ramsdell, J.V.
Partner: UNT Libraries Government Documents Department
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Measurement program to characterize the wind at a potential WECS site

Description: An onsite meteorological measurement program to characterize the wind at a potential wind turbine installation site is described. The basic informational requirements have been postulated, the analysis described, and an appropriate measurement program has been devised. This phase of siting measurements provides the information for the final installation decision process--which WECS to put at which site.
Date: March 1, 1978
Creator: Verholek, M.G.
Partner: UNT Libraries Government Documents Department
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Screening method for wind energy conversion systems

Description: A screening method is presented for evaluating wind energy conversion systems (WECS) logically and consistently. It is a set of procedures supported by a data base for large conventional WECS. The procedures are flexible enough to accommodate concepts lacking cost and engineering detail, as is the case with many innovative wind energy conversion systems (IWECS). The method uses both value indicators and simplified cost estimating procedures. Value indicators are selected ratios of engineering p… more
Date: March 1, 1980
Creator: McConnell, R.D.
Partner: UNT Libraries Government Documents Department
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Employment and land-use impacts of resource program elements

Description: The Pacific Northwest Laboratory (PNL) evaluated several power resource alternatives under consideration by the Bonneville Power Administration in its Resource Program Environmental Impact Statement (RPEIS). The purpose of this evaluation was to determine the potential impacts of each alternative in terms of land use and employment. We reviewed the literature that describes land-use and employment impacts to derive estimates of each type of effect. These estimates were scaled to a per-megawatt … more
Date: March 1, 1992
Creator: Shankle, S A; Baechler, M C; Blondin, D W & Grover, S E
Partner: UNT Libraries Government Documents Department
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Coastal zone wind energy. Part III: a procedure to determine the wind power potential of the coastal zone

Description: A stepwise procedure is presented for determining the seasonal and/or annual mean potential wind power density for any location on the East and Gulf coasts of the United States. The steps include reference to the dominant wind regimes and mean power densities already obtained to estimate the wind power potential of the location under consideration; methods to calculate the potential wind power distributions and steps to be taken to locate the best site in the area of interest. The method can be… more
Date: March 1, 1982
Creator: Garstang, M.; Pielke, R. & Snow, J.W.
Partner: UNT Libraries Government Documents Department
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SEACC: the systems engineering and analysis computer code for small wind systems

Description: The systems engineering and analysis (SEA) computer program (code) evaluates complete horizontal-axis SWECS performance. Rotor power output as a function of wind speed and energy production at various wind regions are predicted by the code. Efficiencies of components such as gearbox, electric generators, rectifiers, electronic inverters, and batteries can be included in the evaluation process to reflect the complete system performance. Parametric studies can be carried out for blade design char… more
Date: March 1, 1983
Creator: Tu, P.K.C. & Kertesz, V.
Partner: UNT Libraries Government Documents Department
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Improved generator for use with low-speed rotating machines. Final report

Description: The goal of this project was to construct a low-technology, maintenance-free dc electrical generator suited for use with low-speed rotating machines such as windmills or waterwheels. The generator consists of permanent magnets affixed to the circumference of the rotating device, and stationary coils mounted on a semicircular frame. As the device rotates, the magnets move past the coils and magnetically induce an ac voltage in the coils. This voltage is rectified and stored in a battery. No gear… more
Date: March 31, 1983
Creator: Goerz, J.W.
Partner: UNT Libraries Government Documents Department
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NAWIG News: The Quarterly Newsletter of the Native American Wind Interest Group, Spring 2008

Description: The United States is home to more than 700 American Indian tribes and Native Alaska villages and corporations located on 96 million acres. Many of these tribes and villages have excellent wind resources that could be commercially developed to meet their electricity needs or for electricity export. The Wind Powering America program engages Native Americans in wind energy development, and as part of that effort, the NAWIG newsletter informs readers of events in the Native American/wind energy com… more
Date: March 1, 2008
Creator: Baranowski, R.
Partner: UNT Libraries Government Documents Department
open access

Renewable Energy Development on Fort Mojave Reservation Feasiblity Study

Description: The Ft. Mojave tribe, whose reservation is located along the Colorado River in the states of Arizona, California, and Nevada near the point where all three states meet, has a need for increased energy supplies. This need is a direct result of the aggressive and successful economic development projects undertaken by the tribe in the last decade. While it is possible to contract for additional energy supplies from fossil fuel sources it was the desire of the tribal power company, AHA MACAV Power … more
Date: March 17, 2008
Creator: Russell Gum, ERCC analytics LLC
Partner: UNT Libraries Government Documents Department
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Wind turbine reliability :understanding and minimizing wind turbine operation and maintenance costs.

Description: 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,… more
Date: March 1, 2006
Creator: Walford, Christopher A. (Global Energy Concepts. Kirkland, WA)
Partner: UNT Libraries Government Documents Department
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Feasibility Study for Photovoltaics, Wind, solar Hot Water and Hybrid Systems

Description: Southwestern Indian Polytechnic Institute (SIPI) located in Albuquerque New Mexico is a community college that serves American Indians and Alaska Natives. SIPI’s student body represents over 100 Native American Tribes. SIPI completed a renewable energy feasibility study program and established renewable energy hardware on the SIPI campus, which supplements and creates an educational resource to teach renewable energy courses. The SIPI campus is located, and has as student origins, areas, in whi… more
Date: March 26, 2008
Creator: Hooks, Ronald & Montoya, Valerie
Partner: UNT Libraries Government Documents Department
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Cogeneration and Small Power Production Quarterly Report to the California Public Utilities Commission First Quarter - March 1983

Description: In the First Quarter of 1983, the number of signed contracts and committed projects rose from 204 to 224, with a total estimated nominal capacity of these projects of 1,246 MW. Of this nominal capacity, about 259 MW is operational, and the balance is under contract for development. Of the 224 signed contracts and committed projects, 70 were cogeneration and solid waste/biomass projects with a potential of 687 MW. PG and E also had under active discussion 30 cogeneration projects that could gene… more
Date: March 1, 1983
Partner: UNT Libraries Government Documents Department
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Trailing edge modifications for flatback airfoils.

Description: The adoption of blunt trailing edge airfoils (also called flatback airfoils) for the inboard region of large wind turbine blades has been proposed. Blunt trailing edge airfoils would not only provide a number of structural benefits, such as increased structural volume and ease of fabrication and handling, but they have also been found to improve the lift characteristics of thick airfoils. Therefore, the incorporation of blunt trailing edge airfoils would allow blade designers to more freely add… more
Date: March 1, 2008
Creator: Kahn, Daniel L.; van Dam, C.P. & Berg, Dale E.
Partner: UNT Libraries Government Documents Department
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Advanced Power Electronic Interfaces for Distributed Energy Systems Part 1: Systems and Topologies

Description: This report summarizes power electronic interfaces for DE applications and the topologies needed for advanced power electronic interfaces. It focuses on photovoltaic, wind, microturbine, fuel cell, internal combustion engine, battery storage, and flywheel storage systems.
Date: March 1, 2008
Creator: Kramer, W.; Chakraborty, S.; Kroposki, B. & Thomas, H.
Partner: UNT Libraries Government Documents Department
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Siting small wind turbines

Description: A recent survey has indicated that improper siting has been a common cause of dissatisfaction among users of small wind turbines. That is, the user has not received the power output or machine life he expected. Most potential purchasers will need to be reasonably certain of the cost of wind power for their particular application before they decide to buy a wind energy conversion system (WECS). Such an assessment requires an accurate knowledge of wind characteristics at the turbine site. A proce… more
Date: March 1, 1979
Creator: Pennell, W. T. & Wegley, H. L.
Partner: UNT Libraries Government Documents Department
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Field study of the aesthetics of small wind machines: a preliminary report

Description: A field study was conducted at the Rocky Flats Small Wind Systems Test Center to determine if aesthetic preferences exist for particular designs of small wind machines, and to gather data on the importance of aesthetics relative to other wind system issues. Participants on public tours of the Test Center were asked to answer several general questions and to rate the visual appearance of various working parts (rotor and nacelle), towers, and complete machines. Working parts included vertical- an… more
Date: March 1, 1980
Creator: Strojan, C. L.; Lawrence, K. & O'Donnell, D.
Partner: UNT Libraries Government Documents Department
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Estimation of wind characteristics at potential wind energy conversion sites. Volume 1. Technical report

Description: To achieve the DOE goal of placing the most economically viable wind energy conversion system at a site, it becomes necessary to determine the accuracy of the climatology development technique, and to determine the extent of its applicability to sites of differing geographic settings and data station locations. To achieve this goal, the Climatology Development Methodology was applied to eight candidate wind energy sites of differing site geographic settings and data station locations. The perfo… more
Date: March 1, 1978
Creator: Howard, S. M. & Chen, P. C.
Partner: UNT Libraries Government Documents Department
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Improved diagnostic model for estimating wind energy

Description: Because wind data are available only at scattered locations, a quantitative method is needed to estimate the wind resource at specific sites where wind energy generation may be economically feasible. This report describes a computer model that makes such estimates. The model uses standard weather reports and terrain heights in deriving wind estimates; the method of computation has been changed from what has been used previously. The performance of the current model is compared with that of the … more
Date: March 1, 1983
Creator: Endlich, R. M. & Lee, J. D.
Partner: UNT Libraries Government Documents Department
open access

Siting handbook for small wind energy conversion systems

Description: This handbook was written to serve as a siting guide for individuals wishing to install small wind energy conversion systems (WECS); that is, machines having a rated capacity of less than 100 kilowatts. It incorporates half a century of siting experience gained by WECS owners and manufacturers, as well as recently developed siting techniques. The user needs no technical background in meteorology or engineering to understand and apply the siting principles discussed; he needs only a knowledge of… more
Date: March 1, 1980
Creator: Wegley, H. L.; Ramsdell, J. V.; Orgill, M. M. & Drake, R. L.
Partner: UNT Libraries Government Documents Department
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