Some progress on my welder conversion

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!

formatting link
formatting link

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.

Reply to
Loading thread data ...

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.