Results 11 to 20 of about 599,758 (310)

Experimental research on arc characteristics for a 40.5-kV vacuum circuit breaker

open access: yesThe Journal of Engineering, 2019
With the proposal and development of the energy internet, the wind power generation techniques, the photovoltaic power generation and the fuel cell, the power generation technology has been further developed and applied on a large scale.
Xiaohan Zhan   +4 more
doaj   +1 more source

Simulation analysis of intermittent arc grounding fault applying with improved cybernetic arc model

open access: yesThe Journal of Engineering, 2019
Intermittent arc grounding fault frequently occurs in non-solidly earthed networks. Establishing an accurate arc model is the basis for analysis of fault characteristics.
Shurong Li   +3 more
doaj   +1 more source

Research on Vacuum Arc Commutation Characteristics of a Natural-Commutate Hybrid DC Circuit Breaker

open access: yesEnergies, 2020
Vacuum arc commutation is an important process in natural-commutate hybrid direct current (DC) circuit breaker (NHCB) interruption, as the duration of vacuum arc commutation will directly affect the arcing time and interrupting time of NHCB.
Dequan Wang   +7 more
doaj   +1 more source

Study on the Feature Space Detection Method of DC Arc Fault for Photovoltaic system [PDF]

open access: yesE3S Web of Conferences, 2021
An arc fault on the DC side of the photovoltaic system is a potential safety hazard and is difficult to detect due to the complexity of photovoltaic systems. The detection method of series arc fault in photovoltaic systems is investigated here.
Sun Liling, Wu Han, Lu Xiangdong
doaj   +1 more source

Process Control of 3D Welding as a Droplet-Based Rapid Prototyping Technique [PDF]

open access: yes, 1998
Three-dimensional welding is investigated as a rapid prototyping technique for the production of real Inetallic parts using gas metal arc welding principles.
Beardsley, H., Kovacevic, R.
core   +1 more source

Modeling and Estimation of Break Arc Extinction Distance in Low Voltage DC Systems

open access: yesEnergies, 2021
Recently, as DC power generation and DC loads such as renewable energy and EVs increase, the need for a low-voltage direct current (LVDC) distribution system has gradually emerged.
Yong-Jung Kim, Hyo-Sung Kim
doaj   +1 more source

Arc Shape Characteristics with Ultra-High-Frequency Pulsed Arc Welding

open access: yesApplied Sciences, 2017
Arc plasma possesses a constriction phenomenon with a pulsed current. The constriction is created by the Lorentz force, the radial electromagnetic force during arc welding, which determines the energy distribution of the arc plasma.
Mingxuan Yang, Hao Zheng, Ling Li
doaj   +1 more source

Oxygen-isotope and trace element constraints on the origins of silica-rich melts in the subarc mantle [PDF]

open access: yes, 2007
Peridotitic xenoliths in basaltic andesites from Batan island in the Luzon arc contain silica-rich (broadly dacitic) hydrous melt inclusions that were likely trapped when these rocks were within the upper mantle wedge underlying the arc.
Eiler, J. M.   +4 more
core   +5 more sources

Vacuum arc characteristics of an AMF–TMF composite contact with fixed AMF contacts under different opening velocities

open access: yesAIP Advances, 2022
The objective of this paper is to determine the vacuum arc characteristics of a novel axial magnetic field (AMF)–transverse magnetic field (TMF) composite contact under different opening velocities.
Zihan Wang   +6 more
doaj   +1 more source

Influence of Train Speed on Transient Current Evolution in Traction Network Under Pantograph–Catenary Offline Conditions

open access: yesEnergies
To investigate the influence of train operating speed on the transient characteristics of the pantograph–catenary arc, this paper establishes an integrated simulation model encompassing the traction network, electric locomotive, and arc.
Changchun Lv   +3 more
doaj   +1 more source

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