Welding Module

摘要

Welding systems are presented, in which a single power source provides a first DC output to a plurality of digital waveform controlled chopper modules. Welding modules are also disclosed for converting an input DC signal to a welding signal, which are comprised of a down-chopper for providing a welding signal waveform according to a pulse width modulated switching signal, along with a digital waveform controller providing the switching signal according to a desired waveform.

主权项

1. A welding chopper module for converting an input DC signal to a welding signal for performing a welding process, said welding module comprising:
a first transformerless down-chopper having an input for receiving a DC signal from an external power source, and a switching circuit for providing a first electrical welding signal waveform comprising a rapid succession of individual pulses that define said first waveform in a welding process according to a pulse width modulated first switching signal; and a first digital waveform controller integrated with said transformerless first down-chopper and providing said pulse width modulated first switching signal according to a desired first waveform wherein said first transformerless chopper module receives only power and outputs a current suitable for welding.