RESONANT CONVERTER FOR ARC WELDING USING MICROCOMPUTER CONTROL

Jaroslav Dudrík - Peter Dzurko - Peter Višnyi

   The paper presents a DC-DC converter with a series-parallel resonant full-bridge inverter used for arc welding. The soft switching of all power switches is achieved by using the nondissipative snubbers. The practical implementation of a microcomputer to control the output parameters is described. Steady-state and dynamical behaviour of the converter is investigated. Considerations for practical design based on a laboratory model of the converter are discussed.

Keywords: DC-DC converter, resonant inverter, arc welding

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