| 摘要 |
The present invention provides a self-controlled welding power device which measures changes in a current and a voltage during a short short-circuit when arc-welding generates in a welding torch when arc-welding system processes a welding task, and automatically compensates a current and a voltage according to a measured value. The present invention includes a power converting and supplying module which applies voltage of one polarity to the welding torch via a cable by a medium of a wire feeder and applies a voltage of the other polarity to a base material by converting an AC power supply into a DC power supply and controlling a voltage to be a voltage necessary for arc-welding; a power measuring module which measures changes in the state of a welding current and an output voltage applied to the welding torch via the cable according to the processing time of the arc-welding by the welding torch; and a welding power control module which measures a voltage of a welding arc based on the changes of the welding current and the output voltage measured by the power measuring module according to the processing time of the arc-welding by the welding torch, and controls the compensation of the welding current and the output voltage according to the voltage; and a power compensation module which compensates and outputs the output current and voltage of the power converting and supplying module according to a control of the compensation of the welding power control module. [Reference numerals] (10) Power converting and supplying module; (100) Welding power supply device; (20) Power measuring module; (30) Welding power control module; (40) Power compensation module; (50) Supply control module; (60) Wire feeding module; (80) Power setting unit; (90) Display unit |
