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On the dynamics of cutting arc plasmas: the role of the power supply ripple

Author(s): Leandro Prevosto

Journal: Advanced Electromagnetics
ISSN 2119-0275

Volume: 1;
Issue: 2;
Start page: 12;
Date: 2012;
Original page

Keywords: Electrical discharge | Plasma

The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities. Experimental observations on the dynamics of the non-equilibrium plasma inside the nozzle of a 30 A oxygen cutting torch with a 7 % ripple level of its power source are reported in this work.
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