A DRIVING CIRCUIT DEVICE OF INVERTER ARC STUD WELDING MACHINE

摘要

The present invention relates to a drive circuit device for an inverter arc stud welding machine, and more particularly to a drive circuit device for an inverter arc stud welding machine, comprising: a power supply for supplying drive power for arc arc stud welding; An IGBT module_HI receiving the driving power supplied from the power supply unit, and a bridge of the IGBT module_L0, and the IGBT module_HI and the IGBT module_L0, which output drive currents through alternating high-A module section; A transformer receiving a driving current output from the IGBT module through a primary side and outputting the driving current to a secondary side; (-) base connected to an output terminal on the secondary side of the transformer, and a positive (+) gun, and the arc heat generated from the arc welding current applied from the transformer causes the metal An arc welding portion for performing welding by heating and fusion bonding; And a feedback signal fed back from the IGBT module_HI and the IGBT module_LO of the IGBT module part to detect the state of the IGBT module part, and the IGBT module_HI and the IGBT modules Q1 to Q4 provided in the IGBT module_L0 are deteriorated Or a feedback circuit block which functions to prevent short or open of the feedback circuit block.According to the drive circuit device of the inverter arc stud welding machine proposed in the present invention, the drive circuit device including the power supply part, the IGBT module part, the drive circuit device including the transformer and the arc welding part, The IGBT module provided in the two IGBT modules may be deteriorated or short-circuited or open due to voltage transients or noise during the switching operation of the two IGBT modules, So that it can be prevented.Further, according to the present invention, it is possible to provide a stable and excellent welding quality that can supply a stable driving current without causing malfunction through the normal switching operation of the IGBT elements of the two IGBT modules, Can operate.;