Welding power supply with digital controller

摘要

A welding power supply including power conversion circuitry adapted to receive a primary source of power, to utilize one or more power semiconductor switches to chop the primary source of power, and to convert the chopped power to a welding output is provided. The provided welding power supply includes a pulse width modulated (PWM) digital controller including gate drive circuitry that generates a PWM output signal that controls the switching of the one or more power semiconductor switches. The PWM output signal includes a duty cycle term corrected for one or more sources of error in the welding system.

主权项

1. A welding power supply comprising:
power conversion circuitry comprising one or more power semiconductor switches, wherein the power conversion circuitry is configured to receive power from a primary source and to switch the one or more power semiconductor switches between an ON configuration and an OFF configuration to convert the received power to a welding output; and a pulse width modulated (PWM) digital controller coupled to the power conversion circuitry and configured to modify a switching frequency of the one or more power semiconductor switches based at least in part on a selected welding process of the welding power supply and an operating condition of the welding power supply.