A type of novel inverter power supply system for high-power twin-wire pulsed gas metal arc welding(GMAW) is presented mainly for dealing with the disadvantages of the conventional power supply for twin-wire pulsed GMAW of which the output power is generally difficult to increase due to limitations of the power of semiconductors and the power density of magnetic devices.In the power supplies for the master and slave arcs,the digital signal processor(DSP) TMS320F28335 is used to form the DSP- based synergic control system for parallel high-power pulsed GMAW,which achieves high-power output of two parallel inverters controlled by a single DSP;master-slave communication is achieved by using e controller area network(eCAN)module of DSP,thus realizing anti-phase pulse output of high-power twin-wire pulsed GMAW and reducing the interference between twin arcs.The experiment results demonstrate that the designed inverter power supply system for high-power twin-wire pulsed GMAW can bring about high-power efficiency of welding,stable welding process and proper formation of welds.
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