POWER SUPPLY DEVICE FOR ARC-WELDING AND CONTROL METHOD OF POWER SUPPLY DEVICE FOR ARC-WELDING

摘要

PROBLEM TO BE SOLVED: To provide a power supply device for arc-welding and a control method of the same capable of achieving improvement of weld quality.SOLUTION: Amplitude setting of feeding speed Vft of weld wire 12 is performed on the basis of setting voltage of output voltage Vw. Direct adjustment of arc length is performed by feeding control on the basis of the amplitude setting.