Method and apparatus for producing welding power

Details Method and apparatus for producing welding power Method and apparatus for producing welding power

1997-06-11

2000-09-05

Shaw, Clifford C.

Electric heating

Metal heating

By arc

B23K 910

Patent

active

061146552

ABSTRACT:
A method and apparatus for providing submerged arc welding power is disclosed. The power supply is AC/DC, and may be controlled in either a CV or a CC mode. The power supply includes a cycloconverter that provides a single phase output and receives a three phase input. A controller includes a PI current regulator for operation in the CC mode. The controller also includes a PI voltage regulator. When the CV mode is selected, the voltage and current regulators are cascaded such that the output of the voltage regulator is the set point input to the current regulator.

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