Results 21 to 30 of about 1,669,794 (250)

Photosynthetic Active Radiation, Solar Irradiance and the CIE Standard Sky Classification

Applied Sciences, 2020
Plant growth is directly related to levels of photosynthetic photon flux density, Qp. The improvement of plant-growth models therefore requires accurate estimations of the Qp parameter that is often indirectly calculated on the basis of its relationship ...
Ana García-Rodríguez, Sol García-Rodríguez, Montserrat Díez-Mediavilla, Cristina Alonso-Tristán   +3 more
doaj   +1 more source

A Low-Cost Luxometer Benchmark for Solar Illuminance Measurement System Based on the Internet of Things

Sensors, 2022
Natural illumination has an important place in home automation applications. Among other advantages, it contributes to better visual health, energy savings, and lower CO2 emissions.
Omar Guillán Lorenzo, Andrés Suárez-García, David González Peña, Manuel García Fuente, Diego Granados-López   +4 more
doaj   +1 more source

Virtual composite impedance circulating current suppression strategy with adaptive adjustment capability

IET Generation, Transmission & Distribution, 2023
In the process of accessing distributed power sources in microgrid, there will be serious coupling between active power and reactive power, which will lead to significant changes in the inverter outlet voltage and impedance and increase the circulating ...
Jihong Zhang, Yunfei Liu, Yili Wei, Xin Zhang, Zhenkui Wu   +4 more
doaj   +1 more source

Design and implementation of a general batch simulation tool of SOWFA and its application in training a single-turbine surrogate

Energy Reports, 2023
Simulator fOr Wind Farm Applications (SOWFA) is a powerful wind farm simulation tool. It is widely used in wake effect research. However, the integration between AI and SOWFA is weak. Without AI, it is difficult for us to fully use SOWFA.
Tannan Xiao, Yuqi Cao, Bingfeng Liang, Yang Wang, Jing Wang, Ying Chen   +5 more
doaj   +1 more source

Research on participation of flywheel energy storage in wind farm frequency regulation control

Zhejiang dianli, 2022
In view of a whole series of problems such as the reduction of system inertia， the increase of frequency fluctuation， and the deterioration of power quality caused by large-scale wind power integration， a flywheel with high power density is designed for ...
ZHANG Jihong, CUI Tianxiang, XIONG Wei, WU Zhengkui, ZHANG Zilei   +4 more
doaj   +1 more source

Statistics of counter-streaming solar wind suprathermal electrons at solar minimum : STEREO observations [PDF]

, 2010
Previous work has shown that solar wind suprathermal electrons can display a number of features in terms of their anisotropy. Of importance is the occurrence of counter-streaming electron patterns, i.e., with "beams" both parallel and anti-parallel to ...
Skoug, R. M., C. Mazelle, A. Opitz, Luhmann, J.G., E. Penou, Penou, E., C. Jacquey, Génot, Vincent, Larson, D. E., Jian, L., Sauvaud, J.-A., Fedorov, A., Jacquey, C.J., P. Schroeder, Gosling, J.T., Skoug, R.M., R. M. Skoug, Jacquey, C., K. D. Simunac, Meziane, K., Russell, C. T., Lavraud, B., C. Foullon, Foullon, C., J.-A. Sauvaud, Sauvaud, Jean-André, Rouillard, A.P., I. Dandouras, Rouillard, A. P., Génot, V., Luhmann, J. G., J. T. Gosling, C. T. Russell, J. T. Steinberg, Foullon, C. (Claire), A. B. Galvin, Opitz, A., Simunac, K. D., Larson, D.E., K. Meziane, Mazelle, C., Foullon, Claire, A. Fedorov, Galvin, A. B., J. G. Luhmann, Sauvaud, J.A., P. Louarn, Russell, C. T. (Christopher T.), Steinberg, John Tyree, D. E. Larson, Dandouras, I., Steinberg, J. T., Simunac, K.D.C., A. P. Rouillard, Schroeder, P., Russell, C.T., Galvin, A.B., Steinberg, J.T., Gosling, J. T., L. Jian, Louarn, P., V. Génot, B. Lavraud   +62 more
core   +2 more sources

Parallel and perpendicular cascades in solar wind turbulence [PDF]

, 2005
MHD-scale fluctuations in the velocity, magnetic, and density fields of the solar wind are routinely observed. The evolution of these fluctuations, as they are transported radially outwards by the solar wind, is believed to involve both wave and ...
Matthaeus, William H., Oughton, Sean, S. Oughton, W. H. Matthaeus, Oughton, S., Matthaeus, W. H.   +5 more
core   +2 more sources

Transport of cross helicity and radial evolution of alfvenicity in the solar wind [PDF]

, 2004
A transport theory including cross helicity, magnetohydrodynamic(MHD) turbulence, and driving by shear and pickup ions, is applied to the radial evolution of the solar wind.
Matthaeus, William H., Oughton, Sean, Minnie, J., Bieber, J.W., Parhi, S., Breech, Ben   +5 more
core   +2 more sources

Dynamical age of solar wind turbulence in the outer heliosphere [PDF]

, 1998
In an evolving turbulent medium, a natural timescale can be defined in terms of the energy decay time. The time evolution may be complicated by other effects such as energy supply due to driving, and spatial inhomogeneity.
Matthaeus, William H., Oughton, Sean, William H. Matthaeus, Smith, Charles W., Charles W. Smith, Sean Oughton   +5 more
core   +1 more source

Superposed epoch analysis of high-speed-stream effects at geosynchronous orbit: Hot plasma, cold plasma, and the solar wind [PDF]

, 2008
Superposed epoch analyses of magnetospheric plasma analyzer (MPA) data from Los Alamos National Laboratory (LANL) satellites are performed to reveal the density, temperature and flow velocity behavior of the hot ion plasma (0.1–45 keV), the hot electron ...
Borovsky, Joseph E., Denton, Michael H.
core   +4 more sources