REDUCED ENERGY WELDING SYSTEM AND METHOD

摘要

A welding regime may implements cyclic short circuits under a closed loop voltage control approach. Upon clearing or imminent clearing of the short circuit, a current recess is implemented. The current recess reduces the current that would otherwise be applied to the weld, resulting in multiple benefits. The recess may be implemented by suspending voltage command signals. Following the current recess, normal control is resumed with the then-current voltage command.

主权项

1. A welding system comprising:
power circuitry configured to convert incoming power from a source to welding power; control circuitry coupled to the power circuitry and configured to implement a control regime to control the welding power output by the power circuitry in a welding operation, the control regime comprising closed loop control of voltage, detection of a predetermined rate of change of a welding parameter, suspension of closed loop control of voltage and implementation of a current recess, followed by resumption of closed loop control of voltage.