Download or read book Stochastic Modelling of Site Wind Characteristics written by and published by . This book was released on 1977 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stochastic Modelling of Site Wind Characteristics written by Ross B. Corotis and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The economic feasibility of installing a wind energy conversion system at a given site depends on an accurate assessment of the wind characteristics at that site. To accomplish this, data records must be analyzed effectively. This report utilizes statistical methods and probability models to determine optimal evaluation procedures for survey data. Several years of hourly records from five typical Midwest sites, one high tower Midwest site, and one Rocky Mountain site provide a data base to develop the models and procedures. The minimum duration of survey is analyzed as a function of desired confidence level and acceptable tolerance range. Alternate survey procedures are discussed in terms of total survey duration and number of recorded values. Single year velocity records appear acceptable for velocity statistics, but are marginal for wind power estimates unless additional information is available. Persistence of the wind is measured in terms of velocity run duration, and a simple but apparently general model is developed for the probability of run duration. This model, which is calibrated to the average velocity, is based on the co linearity of probability versus run duration after each has been logarithmically transformed. Autocorrelation and cross correlation functions of both wind velocity and wind power are analyzed. The observed histograms for velocities exhibit a reasonable fit to both the Chi -2 and Weibull distributions, and the wind power appears to agree with distributions derived from these.

Download or read book Stochastic Modelling of Wind Characteristics written by Edward Brendan McWilliams and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stochastic Analysis of Wind Characteristics at Wind Energy Conversion System Sites written by Jiann-Jong Lou and published by . This book was released on 1982 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stochastic Modelling of Site Wind Characterisitics written by Ross B. Corotis and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Conference and Workshop on Wind Energy Characteristics and Wind Energy Siting 1979 written by and published by . This book was released on 1979 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stochastic Analysis of Wind Characteristics for Energy Conversion written by Arden Burdet Sigl and published by . This book was released on 1978 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federal Wind Energy Program written by and published by . This book was released on 1975 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Approaches to Stochastic Simulation of Waked Wind Fields in Wind Turbine Arrays written by Jae Sang Moon and published by . This book was released on 2016 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind turbines in a wind plant do not always experience free-stream flow fields. The flow fields inside a wind plant or wind farm, waked by upwind turbines, exhibit different dynamic characteristics. The International Electrotechnical Commission (IEC) standard 61400-1 for the design of wind turbines only considers a deterministic wake model for the design of a wind plant. This study is focused on the stochastic modeling of waked wind fields for assessing turbine loads using a regression-based approach. The waked wind velocity field is generated using Large-Eddy Simulation (LES). Stochastic characteristics of the generated waked wind velocity field, including the mean and turbulence components, are analyzed. Proper orthogonal decomposition (POD) and spectral methods are proposed to develop reduced-order engineering model-based wind velocity fields as alternatives to the LES-generated waked fields. The reduced-order model-based simulation employs either a subset of the POD eigenmodes or Fourier-based spectral simulation with parameters derived from LES in illustrations with a wake-generating turbine. With the spectral model, wake-related spectral parameters are estimated using Multivariate Multiple Linear Regression (MMLR). To validate the simulated wind fields based on the reduced-order models, wind turbine tower and blade loads are generated using aeroelastic simulation for a utility-scale wind turbine model and compared with those based on LES. This study also discusses the construction of a stochastic expanded-wake model for wind turbines experiencing fully and partially waked situations. The study's overall objective is to offer efficient stochastic approaches that are computationally tractable, when assessing the performance and loads of turbines operating in wakes. Validation studies are carried out by comparion with loads computed directly from LES wake fields.

Download or read book Summary Report Federal Wind Energy Program written by United States. Energy Research and Development Administration and published by . This book was released on 1975 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survey of Historical and Current Site Selection Techniques for the Placement of Small Wind Energy Conversion Systems written by American Wind Energy Association and published by . This book was released on 1977 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Time Series Analyses for WECS Applications written by Jack W. Reed and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A methodology for wind power analyses of wind spped time series is described, including computation flow diagrams and a FORTRAN program listing. Examples of results are presented but complete outputs will follow in specialized reports. Primary calculation states are (a)data homogenization for moved anemometers, (b) extrapolations to selected standardized heights, (c) distribution smoothing for observation bias, (d) power distribution function calculation, (e) turbine speed limit effects analysis, (f) time variability assessment, and (g) analysis of light wind durations.

Download or read book Inventory of advanced energy technologies and energy conservation research and development 1976 1978 written by Oak Ridge National Laboratory and published by . This book was released on 1979 with total page 2238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1984 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Power written by S. M. Muyeen and published by BoD – Books on Demand. This book was released on 2010-06-01 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the result of inspirations and contributions from many researchers of different fields. A wide verity of research results are merged together to make this book useful for students and researchers who will take contribution for further development of the existing technology. I hope you will enjoy the book, so that my effort to bringing it together for you will be successful. In my capacity, as the Editor of this book, I would like to thanks and appreciate the chapter authors, who ensured the quality of the material as well as submitting their best works. Most of the results presented in to the book have already been published on international journals and appreciated in many international conferences.

Download or read book National Solar Energy Research Development and Demonstration Program definition Report Solar Energy Research Development and Demonstration Act of 1974 Oversight Hearings written by United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Research, Development, and Demonstration and published by . This book was released on 1975 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: