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I have 10 now 8 ferchild 300A 600V IGBT modules FMG2G300LS60E, and want to do something I am giving away 2(already did) but was thinking of making a OLTC with some of them what should I do with the others?
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
I have some similar but lower current, higher voltage half-bridge packs You can use two packs, one per pack, to make a CFPR/ZVS/Royer invertor; using a ferrite inductor/transformer you can make several kV rms at 20+ kHz to power a dc SGTC or a large C-W multiplier which could be used for a Marx generator, Jacob's ladder etc. OR using an air-cored copper-tubing inductor as an SSTC primary (below 100kHz)
OR you could use them (one per pack) for a coilgun
OR as half- or full-bridge induction heater.
Basically you can use them for almost any hv project.
The SISG sounds interesting what I have seen on it so far is that they sires up a bunch of IGBTs as the spark gap is that right if so this would make a hell of a big coil how long arcs could I get with 2 MOTs.
Registered Member #593
Joined: Tue Mar 20 2007, 12:32AM
Location:
Posts: 50
I'm pretty sure Mark Dunn has gotten at least 40 inch sparks with a dual MOT SISG system, but that info is from stuff I read regarding what he and Terry were working on last year. They may have beaten that by now. I know Finn got even longer sparks with a brick SISG (BRISG). I am working on a small SISG prototype just to make use of some TO-247 1200v 75A IGBT's I had laying around that I mistakenly bought even though they lacked the crucial anti-parallel diode. I found a pretty beefy diode on Digikey (600v 50a ufast) that I am going to put in my SISG board. Of course I'm using the 40n120 TO-264 fairchild diodes in my DRSSTC halfbridge. So I have some pretty serious projects going in parallel, plus I wouldn't mind having an OLTC around too...
ok so I am bring this thred back just for one question:
can I use these in my DRSSTC it is running at around 60Khz and my small IGBTs arnt cutting it when I try to push it past 900A lol yes I did get 72" arcs and would like to have something a bit more durable. if I run it at a long on time and long off time do you think I would increase the probibility of using these reliably, the only problem is that they are really slow.
edit
I calculated the max switching frequency for one cycle to be 303Khz but I think that a 60Khz switching time at 1-2% duty cycle should be ok.
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What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
