POWER SUPPLY DEVICE FOR ARC PROCESSING AND METHOD FOR CONTROLLING POWER SUPPLY DEVICE FOR ARC PROCESSING

摘要

The present invention selects whether a plurality of inverter circuits (INV1, INV2) are driven or stopped in accordance with the measured values of the temperatures of switching elements constituting the inverter circuits (INV1, INV2) and a setting value associated with an output current so that the power consumed by the inverter circuits (INV1, INV2) is minimized.