Results 21 to 30 of about 935,111 (345)

Wind profile prediction using linear Markov chains: A linear algebra approach [PDF]

open access: yes, 2018
To predict the future wind speed and wind direction is of relevance to the wind industry to maximize the power generation. In this regards, this article describes a methodology for the construction of predictive models based on linear Markov chains under
García Planas, María Isabel   +1 more
core   +2 more sources

Dependence of daily precipitation and wind speed over coastal areas: evidence from China's coastline

open access: yesHydrology Research, 2023
Rainfall and wind speed are two important meteorological variables that have a significant impact on agriculture, human health, and socio-economic development.
Xuyang Qi   +7 more
doaj   +1 more source

Reconstruction of Helio-latitudinal Structure of the Solar Wind Proton Speed and Density [PDF]

open access: yes, 2015
The modeling of the heliosphere requires continuous three-dimensional solar wind data. The in-situ out-of-ecliptic measurements are very rare, so that other methods of solar wind detection are needed.
Bzowski, Maciej   +3 more
core   +2 more sources

Wind Speed Prediction via Collaborative Filtering on Virtual Edge Expanding Graphs

open access: yesMathematics, 2022
Accurate and stable wind speed prediction is crucial for the safe operation of large-scale wind power grid connections. Existing methods are typically limited to a certain fixed area when learning the information of the wind speed sequence, which cannot ...
Xiang Ying   +6 more
doaj   +1 more source

Using conditional kernel density estimation for wind power density forecasting [PDF]

open access: yes, 2012
Of the various renewable energy resources, wind power is widely recognized as one of the most promising. The management of wind farms and electricity systems can benefit greatly from the availability of estimates of the probability distribution of wind ...
Bremnes J. B.   +11 more
core   +1 more source

Development and application of automatic on-line measuring device for roadway air volume

open access: yesMeikuang Anquan, 2022
In order to realize the on-line and accurate measurement of roadway air volume, taking the return air roadway and auxiliary transportation roadway in Shangsitou north wing of Wangpo Coal Mine as the research object, the wind speed structure field of ...
SUN Yongxin   +8 more
doaj   +1 more source

Wind turbine condition assessment through power curve copula modeling [PDF]

open access: yes, 2012
Power curves constructed from wind speed and active power output measurements provide an established method of analyzing wind turbine performance. In this paper it is proposed that operational data from wind turbines are used to estimate bivariate ...
Galloway, Stuart   +2 more
core   +1 more source

An Analysis of Variable-Speed Wind Turbine Power-Control Methods with Fluctuating Wind Speed [PDF]

open access: yesEnergies, 2013
Variable-speed wind turbines (VSWTs) typically use a maximum power-point tracking (MPPT) method to optimize wind-energy acquisition. MPPT can be implemented by regulating the rotor speed or by adjusting the active power. The former, termed speed-control mode (SCM), employs a speed controller to regulate the rotor, while the latter, termed power-control
Yun-Su Kim, Il-Yop Chung, Seung-Il Moon
openaire   +3 more sources

Flux-tube geometry and solar wind speed during an activity cycle [PDF]

open access: yes, 2016
The solar wind speed at 1 AU shows variations in latitude and in time which reflect the evolution of the global background magnetic field during the activity cycle.
Brun, A. S.   +2 more
core   +2 more sources

A Novel Statistical Method to Temporally Downscale Wind Speed Weibull Distribution Using Scaling Property

open access: yesEnergies, 2018
To improve our capacity to use available wind speed data, it is necessary to develop a new statistical temporal downscaling method that uses one or a few input variables of any temporal scale for mean wind speed data to obtain wind statistics at finer ...
Ju-Young Shin   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy