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A half-bridge dc/dc converter for plasma cutting machine
Author(s)
Sanajit, N.
Date Issued
December 1, 2007
Type
Conference Paper
Abstract
This paper presents the design and construction of a plasma cutting machine by using a half-bridge dc/dc converter for negative direct current power supply and initial exicting are by a high voltage high frequency circuit. when the gas passes a torch electrod, it will explode to be plasma are and transfer to the work piece. This process has been designed for an output power of plasma cutting machine at 2 kW by employing Isolate Gate Bipolar Transistors (IGBTs) as switches. The switching frequency is 20 kHz. The plasma cutting machine can cut 1 mm of steel. When compared with a linear transformer plasma cutting machine, the designed plasma cutting machine has an efficiency quite similar. In addition, the plasma cutting machine is small, light, and compatible. © 2007 IEEE.
Citation
Proceedings of the International Conference on Power Electronics and Drive Systems, 1223-1227, 2007