Welding-type power supplies with adjustable AC current commutation thresholds

A welding-type power supply, comprising:

• an interface device configured to receive a commutation current threshold selection input;
• a power converter configured to convert input power to welding-type power;
• a commutator circuit configured to output alternating current (AC) welding-type power and to control a polarity of the AC welding-type power;
• and
• a control circuit configured to:
• set a commutation current threshold based on the commutation current threshold selection input, wherein the commutation current threshold selection input comprises a selection of a percentage of a peak current amplitude, and the control circuit is configured to determine the commutation current threshold based on multiplying the commutation current threshold selection input by a positive peak current setpoint or a negative peak current setpoint;
• determine an output current of the AC welding-type power and the polarity of the AC welding-type power;
• and
• when the output current traverses the commutation current threshold, control the commutator circuit to change the polarity of the AC welding-type power.