Results 11 to 20 of about 13,323 (257)
Simulation study on arc motion process of DC miniature circuit breakers
AIP Advances, 2023 Based on the theory of magnetohydrodynamics, a mathematical model of air arc in the arc extinguishing chamber of a DC miniature circuit breaker was established. By coupling external circuit characteristics and contact movement process, the motion process
Dezhi Xiong +3 more
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Parameter identification of dc black-box arc model using non-linear least squares
The Journal of Engineering, 2019 The black-box arc model is known to be a useful technique to simulate dynamic arc-circuit interaction by reflecting arc characteristics. Existing researches have shown that the black-box model has been widely used to analyse the ac arc characteristics of
Kyu-Hoon Park +3 more
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Operation Characteristics for the Superconducting Arc-Induction Type DC Circuit Breaker
Energies, 2020 The multi-terminal direct current network is expected to commercialize while carrying out projects related to DC power systems worldwide. Accordingly, it is necessary to develop a DC circuit breaker required for the DC power system.
Sangyong Park, Hyosang Choi
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Mathematical Modeling of a DC Electric Arc-Dimensionless Representation of a DC Arc
ISIJ International, 2003 A mathematical model presented in previous publications is used to describe fluid flow, heat transfer and electromagnetic phenomena in the arc region of a Direct Current Electric Arc Furnace (DC-EAF). The effects of the arc current and the arc length on the arc characteristics and arc bath interactions are analyzed in a rather generalized way.
Marco Ramírez, Gerardo Trapaga
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Arc Voltage and Current Characteristics in Low-Voltage Direct Current
Energies, 2018 Recently, Low-Voltage DC (direct current) distribution systems have received high lights according to the expansion of DC generations and DC loads such as photovoltaics (PV) generations, electric vehicles (EVs), light emitting diodes (LEDs), computers ...
Wooho Kim, Yong-Jung Kim, Hyosung Kim
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Simulation Analysis of Arc Interruption Characteristics in Disconnector
Machines, 2021 Wind and solar energy are examples of clean energy that are widely developed and utilized in order to achieve the goal of carbon neutrality. Higher requirements for the safety and reliability of the power grid are put forward after they are connected to ...
Jianning Yin +4 more
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Modeling and simulation study on the ablation characteristics of DC contactor contact
AIP Advances, 2023 The DC contactor can frequently break the high current control circuit, and the arc motion characteristic in the current breaking process is closely related to its electrical life and reliability.
Dezhi Xiong +3 more
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Arc erosion characteristics of DC contactor contacts
电力工程技术, 2023 The arc is generated upon contact breaking-off resulting in surface erosion in the terminals and affecting the performance of electrical contact. As there is no natural zero crossing point in the DC power supply system, the erosion caused by arcs is ...
WANG Haitao, YANG Bo
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Radiative Heat Transfer in Models of DC Arc Plasma
PLASMA PHYSICS AND TECHNOLOGY, 2023 The radiative heat transfer in arc plasma models of a free-burning arc and a plasma torch in atmospheric pressure argon is taken into account in a self-consistent way. This is realized by the P1 method for solving the equation of radiative transfer and the multi-band approximation that considers the division of the emitted spectrum into a number of ...
Margarita Baeva +2 more
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DC arc suppression in the improved multichamber structure
AIP Advances, 2019 In order to apply the multichamber structure to DC lines, it’s necessary to know the principle of arc quenching and the arc development process in the multichamber structure.
Zijian Li +4 more
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