Results 41 to 50 of about 14,210 (261)

Electrochemical activation of molecular nitrogen at the Ir/YSZ interface. [PDF]

open access: yes, 2011
Nitrogen is often used as an inert background atmosphere in solid state studies of electrode and reaction kinetics, of solid state studies of transport phenomena, and in applications e.g. solid oxide fuel cells (SOFC), sensors and membranes.
Alexei Barinov   +65 more
core   +3 more sources

Accurate modeling of photovoltaic systems for studying the transient effects of lightning strikes

open access: yesEnergy Reports, 2022
The integration of renewable energy sources (RES) as an alternative source of energy is increasing continuously. This is due to various advantages of RES over traditional energy sources, as they are clean sources and never run out.
Ibrahim Hetita   +5 more
doaj   +1 more source

VICARED: A Neural Network Based System for the Detection of Electrical Disturbances in Real Time [PDF]

open access: yes, 2005
The study of the quality of electric power lines is usually known as Power Quality. Power quality problems are increasingly due to a proliferation of equipment that is sensitive and polluting at the same time.
Elena Ortega, José Manuel   +4 more
core   +1 more source

Analysis of Internal Overvoltages in Transformer Windings during Transients in Electrical Networks

open access: yesEnergies, 2020
Due to the increasing requirements for the reliability of electrical power supply and associated apparatus, it is necessary to provide a detailed analysis of the overvoltage risk of power transformer insulation systems and equipment connected to their ...
Jakub Furgał   +2 more
doaj   +1 more source

Evaluation and Prediction of Over-Voltages Effects Caused by Direct/Indirect Lightning Stroke on Complex Power Distribution Networks Using High Frequency Modeling of the Components [PDF]

open access: yesمجله مدل سازی در مهندسی, 2018
In this paper by transient behavior modeling of all components in the distribution network, the overvoltages caused by direct and indirect of lightning strokes has been predicted.
faridodoin safaei   +2 more
doaj   +1 more source

Methodology for Testing Selected Parameters of Low-Current Vacuum Electric Arc

open access: yesEnergies
This article presents the author’s methodology for testing selected parameters of a low-current vacuum arc, implemented using an innovative test stand based on a vacuum discharge chamber with a contact system mounted inside.
Michał Lech   +3 more
doaj   +1 more source

Influence of Lightning Current Model on Simulations of Overvoltages in High Voltage Overhead Transmission Systems

open access: yesEnergies, 2020
The analysis of lightning overvoltages generated in electrical power systems has a great meaning for the designers and exploitation engineers because it creates bases for the optimization of construction overhead transmission lines and high voltage ...
Jakub Furgał
doaj   +1 more source

Proximity-Aware Calculation of Cable Series Impedance for Systems of Solid and Hollow Conductors [PDF]

open access: yes, 2014
Wide-band cable models for the prediction of electromagnetic transients in power systems require the accurate calculation of the cable series impedance as function of frequency.
Gustavsen, Bjorn   +2 more
core   +1 more source

Study of the oxygen electrode reaction using mixed conducting oxide surface layers. Part I: Experimental methods and current-overvoltage experiments [PDF]

open access: yes, 1986
The oxygen gas electrode has been studied for a number of mixed conducting oxide surface layers on top of Gd2Zr2O7 (TGZO) solid electrolytes. In part II of this paper we present the results of frequency dispersion measurements for the electrode reaction,
Burggraaf, A.J.   +2 more
core   +3 more sources

Recent advances in boosting interfacial bubble dynamics with external fields

open access: yesDroplet, EarlyView.
External physical fields, including acoustic, magnetic, thermal, mechanical, and optical stimuli, accelerate the entire bubble‐dynamics sequence of nucleation, growth, and detachment. Abstract The efficiency of industrial electrocatalytic reactions depends not only on generating gaseous products but also on their detachment from the catalyst surface ...
Wenlu Xie   +5 more
wiley   +1 more source

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