What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Danielle, Sun May 27 2007, 09:11PMI 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?
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
..., Mon May 28 2007, 03:11AM
well, since they are quite slow--fall time of 5us!--you might be better off making a monster 8 stage coilgun with them, or a welder...
..., Mon May 28 2007, 03:11AM
well, since they are quite slow--fall time of 5us!--you might be better off making a monster 8 stage coilgun with them, or a welder...
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Danielle, Mon May 28 2007, 04:03AM
would they be usable in a OLTC?... how would I make a welder?
Danielle, Mon May 28 2007, 04:03AM
would they be usable in a OLTC?... how would I make a welder?
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Brett Miller, Tue May 29 2007, 04:47PM
Daniel,
I think your thread might get more attention if you had "IGBT Modules" and "FMG2G300LS60E" in the title.
Obviously I too would like to know if people on here have done anything cool with those Fairchild half-bridge modules.
-Brett
Brett Miller, Tue May 29 2007, 04:47PM
Daniel,
I think your thread might get more attention if you had "IGBT Modules" and "FMG2G300LS60E" in the title.
Obviously I too would like to know if people on here have done anything cool with those Fairchild half-bridge modules.
-Brett
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Sulaiman, Tue May 29 2007, 06:54PM
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.
Sulaiman, Tue May 29 2007, 06:54PM
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.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Steve Conner, Tue May 29 2007, 10:08PM
Have you seen Terry Fritz's SISG concept? If I were you, I'd be looking at trying to make a SISG out of a series stack of bricks. It would be a first.
You can make an OLTC out of 600V IGBTs, but the performance isn't too spectacular. You really want over 1200V.
Steve Conner, Tue May 29 2007, 10:08PM
Have you seen Terry Fritz's SISG concept? If I were you, I'd be looking at trying to make a SISG out of a series stack of bricks. It would be a first.
You can make an OLTC out of 600V IGBTs, but the performance isn't too spectacular. You really want over 1200V.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Danielle, Tue May 29 2007, 11:02PM
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.
Danielle, Tue May 29 2007, 11:02PM
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.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Brett Miller, Wed May 30 2007, 02:49AM
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...
-Brett
Brett Miller, Wed May 30 2007, 02:49AM
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...
-Brett
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Danielle, Wed Sept 19 2007, 03:38AM
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.
Danielle, Wed Sept 19 2007, 03:38AM
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.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Steve Ward, Wed Sept 19 2007, 05:21AM
No, 60khz is still fast for these IGBTs. Someone mentioned 5uS turn off time, which is enormous even at 10khz.
Steve Ward, Wed Sept 19 2007, 05:21AM
No, 60khz is still fast for these IGBTs. Someone mentioned 5uS turn off time, which is enormous even at 10khz.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Danielle, Wed Sept 19 2007, 06:26AM
thats Td(on):.23us , Tr: .21us, Td(off): .43us, Tf:2.43us
so is it possible because I would love to pump more power into the coil I dont really cair about the losses unless its enormous and I will build the brick driver to drive the gates as fast as possible
Danielle, Wed Sept 19 2007, 06:26AM
thats Td(on):.23us , Tr: .21us, Td(off): .43us, Tf:2.43us
so is it possible because I would love to pump more power into the coil I dont really cair about the losses unless its enormous and I will build the brick driver to drive the gates as fast as possible
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Steve Ward, Wed Sept 19 2007, 05:28PM
I would still say they are far too slow. You will end up switching enormous currents because of that turn off time. Also, because the turn on and off are so very mis-matched, you will need to add deadtime to the gate drive so you dont have shoot-through. Looking at the graphs on the datasheet, it seems you cannot improve Toff with a better gate driver (its pretty much fixed at 2uS).
FYI, the CM300 IGBTs i use at 40khz have something like 300nS Td and 350nS Tf which outperforms your IGBT by a good margin, and i still consider it to be less than optimal running these things at 40khz.
Steve Ward, Wed Sept 19 2007, 05:28PM
I would still say they are far too slow. You will end up switching enormous currents because of that turn off time. Also, because the turn on and off are so very mis-matched, you will need to add deadtime to the gate drive so you dont have shoot-through. Looking at the graphs on the datasheet, it seems you cannot improve Toff with a better gate driver (its pretty much fixed at 2uS).
FYI, the CM300 IGBTs i use at 40khz have something like 300nS Td and 350nS Tf which outperforms your IGBT by a good margin, and i still consider it to be less than optimal running these things at 40khz.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Danielle, Thu Sept 20 2007, 01:48AM
could I run those IGBTs (CM300)with my coil because I may be able to purchase 2
Danielle, Thu Sept 20 2007, 01:48AM
could I run those IGBTs (CM300)with my coil because I may be able to purchase 2
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Steve Ward, Fri Sept 21 2007, 12:32AM
Well umm, i suppose you could but you will need to build better gate drivers etc... which is quite a project. Just dont think its gonna be easy and fast to put together (its a large step up from the simple DRSSTC setup you used). Its really overkill too, but that isnt a bad thing necessarily.
Steve Ward, Fri Sept 21 2007, 12:32AM
Well umm, i suppose you could but you will need to build better gate drivers etc... which is quite a project. Just dont think its gonna be easy and fast to put together (its a large step up from the simple DRSSTC setup you used). Its really overkill too, but that isnt a bad thing necessarily.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Bennem, Fri Sept 21 2007, 05:45AM
Why not try and get hold of some HGT1N40N60A4D mini brick igbt's
which would be a ideal for your DRSSTC driver, and will make your coil more durable
than the ones you are using now.
they are harder to find these days but not impossible,
folks are still selling them on ebay etc.
or the slightly less rated HGT1N30N60A4D which is more readily available.
Steve Ward uses a full bridge of them in his DRSSTC1 and gets some 80 plus inches of spark.
As Steve said, upgrading to CM bricks involves more complicated driver circuitry needed
as well as seperate isolated power supplies to feed the aditional drivers.
Mel.
Bennem, Fri Sept 21 2007, 05:45AM
Why not try and get hold of some HGT1N40N60A4D mini brick igbt's
which would be a ideal for your DRSSTC driver, and will make your coil more durable
than the ones you are using now.
they are harder to find these days but not impossible,
folks are still selling them on ebay etc.
or the slightly less rated HGT1N30N60A4D which is more readily available.
Steve Ward uses a full bridge of them in his DRSSTC1 and gets some 80 plus inches of spark.
As Steve said, upgrading to CM bricks involves more complicated driver circuitry needed
as well as seperate isolated power supplies to feed the aditional drivers.
Mel.
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Danielle, Fri Sept 21 2007, 11:10PM
thanks I think I am getting a 400A 1200V 30-60Khz rated dual IGBT brick pack if no one out bids me this should be nice. I will start to work on constructing the improved gate driver, but am thinking of making it a removable module so I can use it on multiple projects, It would be to take 120VAC then bring that switched like I have seen for the isolated PSU and the gate driver input, then just have plugs for all the gates. I was only thinking as I am also working on an extreamly advanced all in one fiber interrupters, that this upgrade would be nice. My only other questions are , is there a more reliable and tunable logic circuit I should use, and how difficult would it be to set up an under voltage lockout and a no signal/out of phase signal lockout so if the gate driver fails it wont bring both IGBTs high? The bricks are $$$$
Danielle, Fri Sept 21 2007, 11:10PM
thanks I think I am getting a 400A 1200V 30-60Khz rated dual IGBT brick pack if no one out bids me this should be nice. I will start to work on constructing the improved gate driver, but am thinking of making it a removable module so I can use it on multiple projects, It would be to take 120VAC then bring that switched like I have seen for the isolated PSU and the gate driver input, then just have plugs for all the gates. I was only thinking as I am also working on an extreamly advanced all in one fiber interrupters, that this upgrade would be nice. My only other questions are , is there a more reliable and tunable logic circuit I should use, and how difficult would it be to set up an under voltage lockout and a no signal/out of phase signal lockout so if the gate driver fails it wont bring both IGBTs high? The bricks are $$$$
Re: What to do with these IGBT Modules (FMG2G300LS60E)( hopefully Tesla coil related)
Bennem, Sat Sept 22 2007, 06:04AM
For examples of under voltage shut down circuits,
take a look at Dan McCauleys site under his 'Advanced
self resonant driver' he uses a simple op amp/comparator
ic and a few other components.
i beleive Steve Connor also uses a similar circuit on his DRSSTC.
Bennem, Sat Sept 22 2007, 06:04AM
For examples of under voltage shut down circuits,
take a look at Dan McCauleys site under his 'Advanced
self resonant driver' he uses a simple op amp/comparator
ic and a few other components.
i beleive Steve Connor also uses a similar circuit on his DRSSTC.
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