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Posted by Ignoramus19605 on May 10, 2006, 1:56 am
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Hi Glen, you may be interested.
(a comment to those who missed my previous posts, I am converting my
welder from CC only, to CC and CV as well as selectable voltage range,
with hopes to make it into a plasma power supply also).
After a little test run, I am putting together what will become the
final rectifier and controller. I connected it with half of the
secondaries connected as Wye (which, as I know, makes too much
voltage).
After a lot of messing around, I am finally able to properly control
OCV with a pot. That was a very happy moment!
http://igor.chudov.com/projects/Welding/11-New-Rectifier/dscf0253.jpg
http://igor.chudov.com/projects/Welding/11-New-Rectifier/dscf0254.jpg
My plan for tomorrow is to put together a rudimentary control panel
(on/off, voltage and current control pots) and connect rectifier to
welder outputs. Maybe even test some stick welding, in 3-4 days.
After that, I will try to make a reconnector to select between
paralleled delta at 66 VAC, and sequence Wye at 220 VAC, using five 24
volt contactors.
i
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