Systems and methods for controlling arc initiation and termination in a welding process

A method for pulse welding, the method comprising:

• controlling, via control circuitry, power conversion circuitry to convert input power to output welding-type power in a plurality of pulse cycles, each pulse cycle comprising a background portion, a ramp up portion, a peak portion, and a ramp down portion at a given polarity, wherein the controlling the power conversion circuitry comprises:
• commanding the power conversion circuitry to initiate a welding process by outputting the welding-type power as a first pulse cycle of the plurality of pulse cycles, wherein the first pulse cycle comprising a first peak current, a first background current, a first pulse width, or a combination thereof;
• commanding the power conversion circuitry to output the welding-type power as a second pulse cycle of the plurality of pulse cycles, wherein the second pulse cycle comprises a second peak current, a second pulse width, or a combination of both, wherein the first peak current is greater than the second peak current and the second peak current is greater than the first background current;
• and
• commanding the power conversion circuitry to transition the output of the welding-type power from the second pulse cycle to a third pulse cycle of the plurality of pulse cycles, wherein the third pulse cycle comprises a third peak current, a third pulse width, or a combination of both,
• wherein the third peak current is greater than the first second peak current, or the third pulse width is greater than the second pulse width.

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 portion, a ramp up portion, a peak portion, and a ramp down portion, wherein the controlling the power conversion circuitry comprises:
• commanding the power conversion circuitry to initiate a welding process by outputting the welding-type power as a first pulse cycle of the plurality of pulse cycles, wherein the first pulse cycle comprises a first peak current, a first pulse width, or a combination of both, and wherein the first pulse cycle comprises a polarity;
• and
• commanding the power conversion circuitry to output the welding-type power as a second pulse cycle of the plurality of pulse cycles, wherein the second pulse cycle comprises a second peak current, a second pulse width, or a combination of both, wherein the second pulse cycle comprises the polarity of the first pulse cycle, the first peak current is greater than the second peak current, and the first pulse width is greater than the second pulse width.