Zero voltage switch for inverter welder

摘要

A welding machine having a welding transformer for transforming an AC voltage and outputting an operating voltage and a coil for converting an AC voltage applied to the welding transformer into a zero voltage, the welding machine comprising: And a phase delay unit for delaying the switching operation of the inverter unit and controlling the output of the inverter unit. Since the zero voltage switching of the inverter unit is performed by the phase delay unit, the switching loss So that it is possible to increase the efficiency of operation and to solve the heat problem occurring in the switching operation, so that the inverter section can be operated at a high frequency, thereby miniaturizing the inverter welder.