图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
高温材料处理:国际期刊
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.v3.i2-3.20
pages 157-166

ANALYSIS OF THE SPONTANEOUS OSCILLATIONS OF THE VOLTAGE OF AN ARC BURNING ON HETEROGENEOUS ELECTRODES BY CURRENT INJECTION

J. L. Doremieux
CNRS-CECM 15 Rue Georges Urbain 94407 VITRY cedex
R. Haug
Universite PARIS XI, Laboratoire de Physique des Gaz et des Plasmas, Equipe DEE SUPELEC Plateau du Moulon 91190 Gif-sur-Yvette

ABSTRACT

It has been shown that large amplitude voltage oscillations may be present in free burning arcs in special conditions. These conditions concern the cathode nature, the ambient gas, the gap length, the arc current. To investigate the origin of these oscillations, we inject in an oscillating arc a stepwise current pulse, and record the induced arc voltage variations Depending on the sign of the injected current ΔI vs. arc current I, and on the relative time position of the current injection vs. voltage level, we observe either stable arc behaviour, with a voltage variation proportional to the injected current : ΔU = ui ΔI/I, where ui is the voltage drop in the plasma, or sensitive unstable levels where the voltage exhibits anomalous large amplitude variations. In this latter case, with ΔI > 0, the arc voltage shifts towards the higher level for a short period, then rapidly falls to the lower level. For the stable arc case, we compute the minimum arc voltage and the arc impedance.


Articles with similar content:

CHARACTERIZATIONS OF THE CARBON ARC AT FULLERENE SYNTHESIS
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.8, 2004, issue 2
V. D. Shimanovich, A. I. Zolotovsky, I. P. Smyaglikov
THERMAL AND NON-THERMAL REGIMES OF GLIDING ARC DISCHARGES
Proceedings of Symposium on Energy Engineering in the 21st Century (SEE2000) Volume I-IV, Vol.0, 2000, issue
Ozlem Mutaf-Yardimci, Alexei V. Saveliev, Alexander A. Fridman, Lawrence A. Kennedy
Electrical and Thermal Conductivities and Enthalpy of Air Plasma Contaminated with Fe, Ca, Mg or H20 Vapour
Progress in Plasma Processing of Materials, 1997, Vol.1, 1997, issue
Y. Tanaka, Y. Yokomizu, T. Matsumura, S. Takayama, K. Shimizu, T. Okada, M. Kato
RELATION BETWEEN THE FLOW REGIME OF A PLASMA TORCH AND ITS ACOUSTIC BEHAVIOR
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.2, 1998, issue 1
A. Daif, B. Granier, J. M. Badie, J. Bresson
INVERSE ESTIMATION OF THE TRANSIENT BEHAVIOR FORA TWO-LAYER CONCENTRIC CIRCULAR CYLINDER WITH INTERFACE THERMAL RESISTANCE
International Heat Transfer Conference 13, Vol.0, 2006, issue
S. K. Wu, H. S. Chu