NDLI: Results of 3D numerical simulations of high-current constricted vacuum arcs in a strong magnetic field

Content Provider	IEEE Xplore Digital Library
Author	Fritz, O. Shmelev, D. Hencken, K. Delachaux, T. Gentsch, D.
Copyright Year	2010
Description	Author affiliation: ABB AG, Calor Emag Medium Voltage Products, Oberhausener Straße 33, 40472 Ratingen, Germany (Gentsch, D.) \|\| ABB Switzerland Ltd, Corporate Research, Segelhof 1, 5405 Baden-Dättwil, Switzerland (Fritz, O.; Hencken, K.; Delachaux, T.) \|\| Institute of Electrophysics, Russian Academy of Science, 106 Amundsena st., 620016 Ekaterinburg, Russia (Shmelev, D.)
Abstract	We present results of the numerical simulation of a constricted vacuum arc at high current (> 10 kA) driven by a magnetic field in a three-dimensional (3d) geometry. Such arcs are found in vacuum interrupters using the transverse magnetic field (TMF) arc control method. The model takes into account in a consistent way the electric current, the magnetic field generated by it, as well as the flow of material and heat in the plasma and in the electrodes. Especially for the two arc foot points, that is, the interfaces of the hot plasma column with the cathode and the anode, the material and heat flows are calculated from a microscopic description of the processes in the sheath. The simulation is able to describe a self-sustained constricted arc moving under the influence of the magnetic field generated by its current including the heating of the electrodes and the formation of new arc roots. Results can be compared with those of simulations made in the past, which are based on the same model, but are using a two-dimensional (2d) geometry only. First results show that the basic findings of the two-dimensional simulations can be confirmed. Systematic studies are, however, not yet practical as the computational effort is high.
Starting Page	359
Ending Page	362
File Size	630880
Page Count	4
File Format	PDF
ISBN	9781424483679
ISSN	10932941
e-ISBN	9781424483686
e-ISBN	9781424483662
DOI	10.1109/DEIV.2010.5625802
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-30
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mathematical model Electrodes Equations Magnetic fields Computational modeling Plasma temperature
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Software

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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