Results 1 to 10 of about 599,659 (211)

Experimental Study on the Working Characteristics of a Pre-combustion AC Plasma Jet Igniter

open access: yesFrontiers in Energy Research, 2022
A new pre-combustion AC plasma jet igniter has been designed. The pre-combustion plasma jet igniter can widen the ignition envelope for the aeroengine and reduce the power consumption of the igniter. To fully exploit the ignition efficiency of the plasma
Weida Cheng   +7 more
doaj   +1 more source

Effect of Increasing Oscillation Width on the Arc Characteristics and Droplet Transfer Behavior of X80 Steel in the Overhead Welding Position of Narrow Gap P-GMAW

open access: yesMetals, 2023
In the welding process of thick plate narrow gap pulse gas metal arc welding (P-GMAW) overhead welding station, the arc characteristics and droplet transfer behavior that become more complex due to the combined effects of narrow gap groove, gravity, and ...
Yang Bao   +3 more
doaj   +1 more source

Microstructure and mechanical properties of 2060 Al–Li alloy welded by alternating current cold metal transfer with high-frequency pulse current

open access: yesHigh Temperature Materials and Processes, 2021
Al–Li alloy has been widely used in the aerospace field owing to its high strength and low density. In this study, alternating current cold metal transfer (AC CMT) along with a high-frequency pulse current technique was used to weld a 2060 Al–Li alloy ...
Wang Liwei   +7 more
doaj   +1 more source

Electrical Modelling of Switching Arcs in a Low Voltage Relay at Low Currents

open access: yesEnergies, 2020
The arc behaviour of short, low current switching arcs is not well understood and lacks a reliable model. In this work, the behaviour of an arc in the air is studied during contact separation at low DC currents (0.5 A to 20 A) and for small gap lengths ...
Ammar Najam   +2 more
doaj   +1 more source

Series DC Arc Simulation of Photovoltaic System Based on Habedank Model

open access: yesEnergies, 2020
Despite the rapid development of photovoltaic (PV) industry, direct current (DC) fault arc remains a major threat to the safety of PV system and personnel. While extensive research on DC fault arc has been conducted, little attention has been paid to the
Xinran Li   +3 more
doaj   +1 more source

An arc fault diagnosis algorithm using multiinformation fusion and support vector machines [PDF]

open access: yesRoyal Society Open Science, 2018
Arc faults in low-voltage electrical circuits are the main hidden cause of electric fires. Accurate identification of arc faults is essential for safe power consumption.
Jian-hong Yang   +3 more
doaj   +1 more source

Mechanism for truncating power-frequency continuation and reburning by means of a super-strong arc-extinguishing gas

open access: yesAIP Advances, 2021
The process of arc suppression with a super-strong arc-extinguishing gas (AEG) includes arc truncation and reburning suppression. In this paper, the plasma mechanics, the mechanics of the super-strong AEG, and the arc-reburning suppression by the AEG are
Yanlei Wang   +4 more
doaj   +1 more source

Parallel DC Arc Failure Detecting Methods Based on Artificial Intelligent Techniques

open access: yesIEEE Access, 2022
The unwanted electric discharge usually relates to arc phenomena between two connectors. The energy from an arc might fuse the electric wiring and be responsible for a fire.
Hoang-Long Dang   +2 more
doaj   +1 more source

Extending pseudo-arcs in odd characteristic

open access: yesFinite Fields and Their Applications, 2013
A {\em pseudo-arc} in $\mathrm{PG}(3n-1,q)$ is a set of $(n-1)$-spaces such that any three of them span the whole space. A pseudo-arc of size $q^n+1$ is a {\em pseudo-oval}. If a pseudo-oval $\mathcal{O}$ is obtained by applying field reduction to a conic in $\mathrm{PG}(2,q^n)$, then $\mathcal{O}$ is called a {\em pseudo-conic}.
Tim Penttila, Geertrui Van de Voorde
openaire   +4 more sources

Feature extraction of arc high impedance grounding fault of low‐voltage distribution lines based on Bayesian network optimisation algorithm

open access: yesIET Cyber-Physical Systems, 2023
In order to accurately extract the fault features of arc high impedance grounding of low‐voltage distribution lines and judge the fault feature types of arc high impedance grounding of low‐voltage distribution lines, a fault feature extraction method for
Jing Sun
doaj   +1 more source

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