Patent ID: 11958142
Assignee: ILLINOIS TOOL WORKS INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A welding-type system, comprising:
power conversion circuitry configured to convert input power to welding-type power; and
control circuitry configured to control the power conversion circuitry to output the welding-type power in a plurality of pulse cycles, each pulse cycle comprising a background phase, a ramp up phase, a peak phase, and a ramp down phase, wherein the controlling the power conversion circuitry comprises:
during the ramp up phase of the pulse cycles, controlling the power conversion circuitry in a current-controlled mode based on comparing an output current of the power conversion circuitry to a target current while ramping up the target current;
in response to reaching a peak transition voltage, switching to controlling the power conversion circuitry during the peak phase in a voltage-controlled mode based on a peak voltage;
during the ramp down phase of the pulse cycles, controlling the power conversion circuitry in the current-controlled mode based on comparing the output current of the power conversion circuitry to the target current while ramping down the target current; and
in response to reaching a background transition voltage, switching to controlling the power conversion circuitry during the background phase in the voltage-controlled mode,
wherein the control circuitry is configured to determine the peak transition voltage as an offset to the peak voltage, wherein the peak transition voltage is lower than the peak voltage.