Results 11 to 20 of about 31,489 (151)

Re‐ignition surge and high‐frequency arc extinction phenomena at 550‐kV shunt reactor current interruption

open access: yesElectrical Engineering in Japan, 2001
AbstractAt substations connected with transmission lines and cables, shunt reactors are sometimes installed to compensate the capacitive current of these lines and cables. It is known that re‐ignitions occur and high‐frequency currents flow during interruption of the shunt reactor currents by switches.
Shigemitsu Okabe   +7 more
openaire   +3 more sources

Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications

open access: yesApplied Sciences, 2017
This paper analyses the transient characteristics and breaking performance of direct-current (DC) forced-interruption vacuum interrupters in 270 V power-supply systems.
Wenlei Huo   +5 more
doaj   +1 more source

Research on formation process of arc grounding over-voltage in mine power supply system

open access: yesGong-kuang zidonghua, 2018
For comprehensive research on formation process of arc grounding over-voltage in mine power supply system, a mine power supply system model and an intermittent arc grounding model were built by use of real time digital simulator, and over-voltages in ...
LIU Jucai   +3 more
doaj   +1 more source

Arc tracking control in insulation systems for aeronautic applications: challenges, opportunities, and research needs [PDF]

open access: yes, 2020
Next generation aircrafts will use more electrical power to reduce weight, fuel consumption, system complexity and greenhouse gas emissions. However, new failure modes and challenges arise related to the required voltage increase and consequent rise of ...
Bogarra Rodríguez, Santiago   +3 more
core   +2 more sources

A mechanism for high-frequency oscillation in ramjet combustors and afterburners [PDF]

open access: yes, 1956
An experimental investigation was made of the behavior of a small two-dimensional combustion chamber, burning a uniform mixture of air and fuel vapor under conditions of high-frequency oscillation or screech.
Marble, Frank E., Rogers, Don E.
core   +1 more source

Construction of a short circuit frequency map to define GMAW-S parameters during WPSs development

open access: yesDyna, 2018
A short circuit frequency map was constructed for GMAW-S using a carbon steel filler metal class AWS ER70S-6 and 75%Ar-25%CO2 shielding gas. This kind of map is proposed as a tool for selecting GMAW-S currents and voltages that enable welds with higher ...
David Bernardo Hoyos-Arango   +2 more
doaj   +1 more source

Accurate Arc Modeling of Single-Phase Arc Grounding Fault in Distribution Network and Research on Dynamic Arc Energy

open access: yesIEEE Access
Aiming at the problem of energy exchange in the arc channel of single-phase arc grounding in distribution networks, this paper establishes a three-dimensional, single-phase arc grounding field-circuit coupled mathematical model based on ...
Yan Li, Jianyuan Xu, Zhenxin Geng
doaj   +1 more source

Unusual Cathode Erosion Patterns Observed for Steered Arc Sources

open access: yes, 2014
A cathodic arc source with a magnetron-type magnetic field was investigated for stability, erosion, and compatibility with a linear macroparticle filter.
Anders, André, Kolbeck, Jonathan
core   +1 more source

Sustained arc ignition system [PDF]

open access: yes, 1977
Circuitry for maintaining an arc or spark across a spark gap for a desired length of time is disclosed. A high voltage, direct current source is connected in series with a secondary winding of a high voltage, stepup transformer or coil and a spark gap ...
Birchenough, A. G.
core   +1 more source

Combustion regimes in sequential combustors: Flame propagation and autoignition at elevated temperature and pressure

open access: yes, 2018
This numerical study investigates the combustion modes in the second stage of a sequential combustor at atmospheric and high pressure. The sequential burner (SB) features a mixing section with fuel injection into a hot vitiated crossflow.
Noiray, Nicolas, Schulz, Oliver
core   +1 more source

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