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Plasma torch ignition by a half bridge resonant converter

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5 Author(s)
J. Pacheco-Sotelo ; Nat. Inst. for Nucl. Res., Mexico City, Mexico ; R. Pena-Eguiluz ; L. P. Eguiluz ; A. S. de los Rios
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The design, implementation, and performance of a half bridge resonant converter (HBRC) used as an electronic ignition system for arc plasma torch generation is presented. The significance of the design lies in its simplicity, versatility, and low cost. The system operates as a high voltage supply attached to electrodes before gaseous breakdown and as an open circuit when an electric arc is established. The operation of the HBRC does not interfere with either the electric supply line or the electric measurement devices. Advantages and limitations of the converter are reviewed. The experimental impedance variation in the medium as a function of frequency and some experiences in striking arcs are also presented

Published in:

IEEE Transactions on Plasma Science  (Volume:27 ,  Issue: 4 )