Results 51 to 60 of about 2,436,355 (386)

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

open access: yesIET 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   +8 more
doaj   +1 more source

Optimal Scheduling of Biogas–Solar–Wind Renewable Portfolio for Multicarrier Energy Supplies

open access: yesIEEE Transactions on Power Systems, 2018
This paper proposes a multisource multiproduct framework for coupled multicarrier energy supplies with a biogas–solar–wind hybrid renewable system.
Bin Zhou   +6 more
semanticscholar   +1 more source

Fractionation of the Solar Wind [PDF]

open access: yesHighlights of Astronomy, 1995
The composition of the solar wind (SW) is not a true sample of the solar composition, but it is fractionated with respect to the solar photosphere. This fractionation follows the well-known first ionization potential (FIP) pattern: When plotting the SW abundances with respect to the solar abundances as a function of FIP, a step function is obtained ...
openaire   +2 more sources

Multifractality and intermittency in the solar wind [PDF]

open access: yesNonlinear Processes in Geophysics, 2007
Abstract. Within the complex dynamics of the solar wind's fluctuating plasma parameters, there is a detectable, hidden order described by a chaotic strange attractor which has a multifractal structure. The multifractal spectrum has been investigated using Voyager (magnetic field) data in the outer heliosphere and using Helios (plasma) data in the inner
Wiesław M. Macek, Wiesław M. Macek
openaire   +7 more sources

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

open access: yesAIP 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

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

open access: yesFrontiers 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   +10 more
doaj   +1 more source

The Pickup Ion-mediated Solar Wind

open access: yesAstrophysical Journal, 2018
The New Horizons Solar Wind Around Pluto (NH SWAP) instrument has provided the first direct observations of interstellar and He pickup ions (PUIs) at distances between ∼11.26 and 38 au in the solar wind.
G. Zank   +5 more
semanticscholar   +1 more source

Solar and Stellar Winds [PDF]

open access: yesHighlights of Astronomy, 1989
AbstractThis review discusses winds from stars with hot outer atmospheres, stars with coronae similar to the sun. It illustrates how solar observations can be used to test a theoretical model for solar-stellar winds, and thereby provide some insights concerning applications to studying winds from stars other than the sun.
openaire   +2 more sources

The near-Sun streamer belt solar wind: turbulence and solar wind acceleration [PDF]

open access: yesAstronomy & Astrophysics, 2021
The fourth orbit of Parker Solar Probe (PSP) reached heliocentric distances down to 27.9R⊙, allowing solar wind turbulence and acceleration mechanisms to be studied in situ closer to the Sun than previously possible. The turbulence properties were found to be significantly different in the inbound and outbound portions of PSP’s fourth solar encounter ...
Jean C. Perez   +11 more
openaire   +10 more sources

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

open access: yes, 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.   +2 more
core   +2 more sources

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