Results 41 to 50 of about 541,486 (194)

Coordinated control of rotor kinetic energy and pitch angle for large‐scale doubly fed induction generators participating in system primary frequency regulation

IET Renewable Power Generation, 2021
This paper presents a control strategy of large‐scale wind‐thermal power joint primary frequency regulation. First, an integrated control strategy is established rotor kinetic energy control and pitch angle control for wind turbine generators ...
Peihong Yang, Bin He, Biao Wang, Xiaoling Dong, WenYing Liu, Jihong Zhang, ZhenKui Wu, Jing‐Xia Liu, Zhigang Qin   +8 more
doaj   +1 more source

The performance prediction and techno-economic analyses of a stand-alone parabolic solar dish/stirling system, for Jamshoro, Pakistan

Cleaner Engineering and Technology, 2021
This study aims to propose a simulation as well as mathematical model to carry out the performance assessment and efficiency improvement of a stand-alone Parabolic Solar Dish Stirling (PSDS) system. The simulation for a 25 ​kW PSDS system is performed in
Amjad Ali Lashari, M.E in Electrical Power, Pervez Hameed Shaikh, Zohaib Hussain Leghari, Mujeeb Iqbal Soomro, Zubair Ahmed Memon, Muhammad Aslam Uqaili   +5 more
doaj   +1 more source

Are periodic solar wind number density structures formed in the solar corona? [PDF]

, 2009
[1] We present an analysis of the alpha to proton solar wind abundance ratio (AHe) during a period characterized by significant large size scale density fluctuations, focusing on an event in which the proton and alpha enhancements are anti-correlated. In
Kasper, J., Spence, Harlan E., Viall, N. M.   +2 more
core   +2 more sources

Hydrogen generation from methanol with network efficient power control for wireless communication system

AIP Advances, 2021
This paper presents a numerical and experimental study on the performance of a methanol steam reformer integrated with a hydrogen/air combustion reactor for hydrogen production.
Hanmin Liu, Jie Shen, Hua Xiang
doaj   +1 more source

Density and temperature of energetic electrons in the Earth's magnetotail derived from high-latitude GPS observations during the declining phase of the solar cycle [PDF]

, 2011
Single relativistic-Maxwellian fits are made to high-latitude GPS-satellite observations of energetic electrons for the period January 2006-November 2010; a constellation of 12 GPS space vehicles provides the observations. The derived fit parameters (for
Cayton, T. E., Denton, Michael
core   +2 more sources

Solar Wind and its Evolution [PDF]

, 2011
By using our previous results of magnetohydrodynamical simulations for the solar wind from open flux tubes, I discuss how the solar wind in the past is different from the current solar wind.
A Telleschi, AS Brun, BE Wood, BE Wood, DJ McComas, H Holweger, H Miyahara, I Ribas, J-F Donati, J-F Donati, J-F Donati, K Hakamada, L Mestel, LK Harra, M Gudel, M Gudel, M Landini, MG Stereborg, RA Kopp, RW Noyes, S Imada, SH Saar, SH Saar, T Sakao, TK Suzuki, TK Suzuki, TK Suzuki, TK Suzuki, TR Ayres, V Holzwarth, Weber EJ, Y-M Wang, Y-M Wang   +32 more
core   +2 more sources

The Relationship Between Solar Wind Dynamic Pressure Pulses and Solar Wind Turbulence

Frontiers in Physics, 2021
Solar wind dynamic pressure pulses (DPPs) are small-scale plasma structures with abrupt and large-amplitude plasma dynamic pressure changes on timescales of seconds to several minutes.
Mengsi Ruan, Pingbing Zuo, Zilu Zhou, Zhenning Shen, Yi Wang, Xueshang Feng, Chaowei Jiang, Xiaojun Xu, Jiayun Wei, Yanyan Xiong, Ludi Wang   +10 more
doaj   +1 more source

Neutral Solar Wind Generated by Lunar Exospheric Dust at the Terminator

, 2007
We calculate the flux of neutral solar wind observed on the lunar surface at the terminator due to solar wind protons penetrating exospheric dust grains with (1) radii greater than 0.1 microns and (2) radii greater than 0.01 microns.
Abramowitz, Berg, Borisov, Brinkfeldt, Carrier III, Collier, Collier, Collier, Collier, Colwell, Criswell, De, Demond, Dwek, Eder, Elphic, Fahr, Farrell, Farrell, Figueroa, Freeman, Gruntman, Halekas, Heiken, Holzer, Hood, Johnson, Kallenbach, Liu, McCoy, McCoy, Michael R. Collier, Moore, Murphy, Park, Rennilson, Richardson, Roelof, Roelof, Rucinski, Schmitt, Severny, Stern, Stubbs, Stubbs, Stubbs, Stubbs, Stubbs, Taguchi, Taguchi, Timothy J. Stubbs, Wang, Wimmer-Schweingruber, Zook   +53 more
core   +1 more source

Stellar Winds on the Main-Sequence I: Wind Model

, 2015
Aims: We develop a method for estimating the properties of stellar winds for low-mass main-sequence stars between masses of 0.4 and 1.1 solar masses at a range of distances from the star.
Brott, I., Güdel, M., Johnstone, C. P., Lüftinger, T., Toth, G.   +4 more
core   +2 more sources

Solar Wind Temperature Isotropy [PDF]

Physical Review Letters, 2019
Reliable models of the solar wind in the near-Earth space environment may constrain conditions close to the Sun. This is relevant to NASA's contemporary innerheliospheric mission Parker Solar Probe. Among the outstanding issues is how to explain the solar wind temperature isotropy.
P H, Yoon, J, Seough, C S, Salem, K G, Klein   +3 more
openaire   +2 more sources