The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Um arco elétrico é gerado pela abertura dos contatos de um relé quando a corrente está acima da corrente mínima do arco em um circuito. Um modelo magneto-hidrodinâmico (MHD) foi empregado para simular esse processo de arco dinâmico. Foram obtidas as distribuições dos parâmetros do arco como temperatura, campo elétrico e densidade do fluxo magnético gerado pela abertura dos contatos em um circuito com baixa corrente de 5 A DC. Também foram simulados os comportamentos dos parâmetros do arco com o aumento do comprimento do vão entre os contatos. O modelo MHD foi então combinado com camadas dinâmicas estruturadas, que é uma técnica de malha dinâmica de dinâmica de fluidos computacional (CFD) para calcular o processo de arco dinâmico, e os parâmetros do arco gerados pela abertura dos contatos no circuito com baixa corrente de 5 A DC. com velocidade constante também foram obtidos. Descobriu-se que a tensão de contato variável no tempo e a duração do arco calculadas concordaram bem com os resultados do teste. Assim, a validade da simulação foi demonstrada.
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Guofu ZHAI, Xue ZHOU, "Study on Arc Generated by Opening Electromagnetic Relay Contacts in DC Low-Current Resistive Circuit with Constant Velocity" in IEICE TRANSACTIONS on Electronics,
vol. E91-C, no. 8, pp. 1233-1239, August 2008, doi: 10.1093/ietele/e91-c.8.1233.
Abstract: An electrical arc is generated by opening the contacts of a relay when the current is above the minimum arc current in a circuit. A magneto-hydrodynamic (MHD) model was employed to simulate this dynamic arcing process. The distributions of arc parameters such as temperature, electrical field and magnetic flux density generated by opening the contacts in a circuit with a 5 A DC low current were obtained. The behaviors of the arc parameters with increasing gap length between the contacts were also simulated. The MHD model was then combined with structured dynamic layering, which is a dynamic meshing technique of computational fluid dynamics (CFD) to calculate the dynamic arcing process, and the arc parameters generated by opening the contacts in the circuit with a 5 A DC low current with a constant velocity were also obtained. It turned out that the computed time-varying contact voltage and arc duration agreed well with the test results. Thus, the validity of the simulation was demonstrated.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.8.1233/_p
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@ARTICLE{e91-c_8_1233,
author={Guofu ZHAI, Xue ZHOU, },
journal={IEICE TRANSACTIONS on Electronics},
title={Study on Arc Generated by Opening Electromagnetic Relay Contacts in DC Low-Current Resistive Circuit with Constant Velocity},
year={2008},
volume={E91-C},
number={8},
pages={1233-1239},
abstract={An electrical arc is generated by opening the contacts of a relay when the current is above the minimum arc current in a circuit. A magneto-hydrodynamic (MHD) model was employed to simulate this dynamic arcing process. The distributions of arc parameters such as temperature, electrical field and magnetic flux density generated by opening the contacts in a circuit with a 5 A DC low current were obtained. The behaviors of the arc parameters with increasing gap length between the contacts were also simulated. The MHD model was then combined with structured dynamic layering, which is a dynamic meshing technique of computational fluid dynamics (CFD) to calculate the dynamic arcing process, and the arc parameters generated by opening the contacts in the circuit with a 5 A DC low current with a constant velocity were also obtained. It turned out that the computed time-varying contact voltage and arc duration agreed well with the test results. Thus, the validity of the simulation was demonstrated.},
keywords={},
doi={10.1093/ietele/e91-c.8.1233},
ISSN={1745-1353},
month={August},}
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TY - JOUR
TI - Study on Arc Generated by Opening Electromagnetic Relay Contacts in DC Low-Current Resistive Circuit with Constant Velocity
T2 - IEICE TRANSACTIONS on Electronics
SP - 1233
EP - 1239
AU - Guofu ZHAI
AU - Xue ZHOU
PY - 2008
DO - 10.1093/ietele/e91-c.8.1233
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 8
JA - IEICE TRANSACTIONS on Electronics
Y1 - August 2008
AB - An electrical arc is generated by opening the contacts of a relay when the current is above the minimum arc current in a circuit. A magneto-hydrodynamic (MHD) model was employed to simulate this dynamic arcing process. The distributions of arc parameters such as temperature, electrical field and magnetic flux density generated by opening the contacts in a circuit with a 5 A DC low current were obtained. The behaviors of the arc parameters with increasing gap length between the contacts were also simulated. The MHD model was then combined with structured dynamic layering, which is a dynamic meshing technique of computational fluid dynamics (CFD) to calculate the dynamic arcing process, and the arc parameters generated by opening the contacts in the circuit with a 5 A DC low current with a constant velocity were also obtained. It turned out that the computed time-varying contact voltage and arc duration agreed well with the test results. Thus, the validity of the simulation was demonstrated.
ER -