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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v3.i2-3.40
pages 181-192

EXPERIMENTAL INVESTIGATION OF BREAKDOWNS IN GLIDING ARC SYSTEM

A. Kaminska
Institute of Electric Power Engineering - Poznan University of Technology ul.Piotrowo 3A - 60-965 Poznan - Poland
Stephane Pellerin
GREMI, CNRS-Universite d'Orleans, BP 6759, 45067 Orleans Cedex 2, France LASEP, Universite d'Orleans - Antenne de Bourges, BP4043, 18028 Bourges, France
B. Pokrzywka
Mt.Suhora, Observatory of Cracow Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
J.-M. Cormier
GREMI-ESPEO, CNRS-Universite d'Orleans, BP 6759, 45067 Orleans Cedex 2, France
O. Martinie
GREMI-ESPEO, CNRS-Universite d'Orleans, BP 6759, 45067 Orleans Cedex 2, France
J. Chapelle
LASEP, Centre Universitaire de Bourges, Rue Gaston Berger, BP 4043, 18028 Bourges Cedex, France

RESUMO

The phenomena of breakdowns in gliding arc device (GLIDARC) are studied experimentally for air, argon, nitrogen, carbon dioxide and hydrogen. Special emphasis is placed on the thermal and dielectric kinds of breakdowns and the conditions of their occurrence. The results show that the breakdown between the narrowest points of the gliding arc electrodes is submitted to the Paschen's law but is strongly affected by the conditions of the cathode surface, the gas flow injected in direction perpendicular to the axis of the discharge and gas purity. The results agree with the well-known general relations of voltage breakdown for different gases. The experiments demonstrate that the breakdowns between arc and electrode, for high flow rate, are almost always dielectric whereas the breakdown between the parts of arc is thermal origin. For low flow rate, the thermal breakdowns between arc and electrode can occur. The analysis of voltage breakdown ΔU, time breakdown Δt and the parameter of ΔU/Δt shows that the breakdowns in gliding arc do not always result to simple mechanism dielectric or thermal breakdowns.


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