Results 71 to 80 of about 3,633,789 (192)

Predicting The Wind Speeds Of Solar-Like Stars

open access: yes, 2016
Some aspects of stellar magnetic activity such as X-ray emission are relatively easy to observe, while others, such as the geometry of the magnetic field are rather more difficult. Indeed, typically only the large-scale (or low-order) components of the field can be mapped.
Jardine, Moira, See, V., Vidotto, A.
openaire   +3 more sources

Evaluation of simple wind power forecasting methods applied to a long-term wind record from Scotland [PDF]

open access: yes, 2012
We present an analysis of the ability to predict the power output from a nominal wind turbine or wind farm a few hours ahead using only locally available data – either the current and recent wind speed or power output. A third method combines the current
Fruh, Wolf-Gerrit; id_orcid
core  

Applicability Evaluation of Wind Turbine Wake Models

open access: yes南方能源建设
[Introduction] The wake effect of wind turbines is an important cause of energy loss in wind farms. The wake study of wind turbines is beneficial to optimization of the turbine arrangement and improvement of the economic efficiency of wind farms. [Method]
Sheng LI   +4 more
doaj   +1 more source

Improving multi-modal wind speed prediction of short and medium term with a bi-clustered machine learning method [PDF]

open access: yesAtmospheric Measurement Techniques
Accurate prediction of wind speed is of great importance for stable and reliable operation of wind farms. However, the single numerical model forecast cannot provide precise wind speed outputs due to the defect of its physical parameterization scheme ...
Y. Zhang   +12 more
doaj   +1 more source

A Novel Hybrid Strategy Using Three-Phase Feature Extraction and a Weighted Regularized Extreme Learning Machine for Multi-Step Ahead Wind Speed Prediction

open access: yesEnergies, 2018
With the growing penetration of wind power into electric grids, improving wind speed prediction accuracy has become particularly valuable for the exploitation of wind power.
Jujie Wang, Yanfeng Wang, Yaning Li
doaj   +1 more source

Forecasting Short-Term Wind Speed Based on IEWT-LSSVM Model Optimized by Bird Swarm Algorithm

open access: yesIEEE Access, 2019
Accurate wind speed prediction can improve the utilization efficiency of wind energy effectively. However, the original time series signals of wind speed present nonlinear or non-stationary characteristics, which make wind speed forecasting very ...
Ling Xiang, Zeqi Deng, Aijun Hu
doaj   +1 more source

Introduction to special issue on high speed solar wind streams and geospace interactions (HSS-GI) [PDF]

open access: yes, 2009
This special issue of the Journal of Atmospheric and Solar-Terrestrial Physics is devoted to research into high speed solar wind streams (HSSs) and their effects on the region of near-Earth space commonly known as ‘geospace’.
Morley, S.K.   +7 more
core   +1 more source

Joint segmentation of wind speed and direction using a hierarchical model [PDF]

open access: yes, 2007
The problem of detecting changes in wind speed and direction is considered. Bayesian priors, with various degrees of certainty, are used to represent relationships between the two time series.
Dobigeon, Nicolas, Tourneret, Jean-Yves
core   +1 more source

A design of power prediction algorithm based on health assessment optimized neural network

open access: yesJournal of Engineering and Applied Science
Wind power prediction holds significant value for the stability of the electrical grid when wind power is connected to the grid. Using neural networks for wind power prediction may have some limitations, such as slow speed and low accuracy.
Xin Xie   +6 more
doaj   +1 more source

Performance of different hybrid algorithms for prediction of wind speed behavior

open access: yes, 2019
This study seeks to provide a new method by proposing three hybrid algorithms. The proposed algorithms include genetic neural network hybrid algorithm, simulated annealing neural network hybrid algorithm, and shuffled frog-leaping neural network hybrid ...
Goli, Alireza   +6 more
core   +1 more source

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