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CIPASS — An ignition method for the innovative plasma torch “LARGE”

Published online by Cambridge University Press:  15 December 1999

R. Hartmann ,
G. Kraut  and
K. Landes
R. Hartmann
Affiliation:
Department of Electrical Engineering, UniBw-Munich, Germany
G. Kraut
Affiliation:
Department of Electrical Engineering, UniBw-Munich, Germany
K. Landes
Affiliation:
Department of Electrical Engineering, UniBw-Munich, Germany
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Abstract

Most plasma torches applied in modern thermal plasma processes can be ignited by a high voltage sparkover or by a pilot arc because of the small distance between cathode and anode. The innovative plasma torch LARGE however is characterized by an arrangement of the electrodes opposite to each other on a common axis with a variable distance up to some hundred millimeters. The central part of the torch between the electrodes is divided into electrically insulated cascade plates. For industrial application of the torch LARGE a complete electronic ignition for high currents is substantial. A new semiconductor based method of Combined Ignition by Pilot Arcing and Successive Switching (CIPASS) was developed. This ignition technique was investigated by electrical and optical diagnostics.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 8 , Issue 3 , December 1999 , pp. 253 - 256
Copyright
© EDP Sciences, 1999

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