Hi,I also built a nice 3-phase DC resonant system some years ago, it can run up to 12kW. Spark gap is driven by a DC motor, speed is controlled by variac from 0 - 6000rpm, which is 0-600 bps. The only thing which is still not built is the secondary coil... Got a little bit lazy the last years. Maybe I finish this project in the future, when I got retired :-) Here are 2 videos where I test the system with a halogen bulb dummyload instead of primary coil.
https://www.youtube.com/watch?v=7GHl2L7xl2I https://www.youtube.com/watch?v=w5-x84V9Pqk Am 06.12.2018 um 05:13 schrieb Greg Peters:
Thanks Jan, Yes it's a very nicely behaved coil. The 3 phase DC supply lets me get multiple kW without upsetting the neighbours too much due to dimming lights or surging, and the MOTs aren't overstressed much. I find it much more user-friendly than my pig-powered single phase coil. I have more info on my blog at www.gregsstuff.com if you're interested. My VFD is similarly protected to yours, normally it runs fine but for some reason it was playing up that night. I think I need to get it into a grounded box. To be honest I normally run it at 50Hz anyway so I may just hard wire it at some point. Can I see your coil somewhere? Cheers, Greg On Thu., 6 Dec. 2018, 10:41 am Jan Ohlsson <jan@xxxxxxxx wrote:That is very impressive for a mot coil! I use a vfd also on my coil. The motor is grounded to mains ground, the cable is shielded._______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla
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