Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx> Hi,MMC are not really "power level limited". If you stay within the DC voltage (or just 100% over :o)) they will be fine ;-)) RMS current is a big factor. Going to 140% of the ratings is usually the limit, but newer caps seem to handle RMS current better. Just don't push peak current much!!
If one considers a 10 x 12 array of 14kV RMS and 12 x 13.5 amps RMS you get a "sustained and rated" 2,268,000 watts!!!! So from that point of view, 10kW is nuttin ;-)) An overrated "peak" power level comes out to say 30000V at 7300 amps for about 1/5th of a giga watt :)))
If they get warm, a fan will increase the air dissipation 500%. But it depends on the internal temperature. Poly caps can take a sustained temperature of 80C for a very long time. However, that is if internal heating is small. If the internal temp gets to about 100C, they will blow up...
But really, I would worry far more about the IGBTs than the caps ;-)) Judging from the looks of the coil, it will work perfect!!!
Cheers,
Terry
At 06:56 PM 1/25/2006, you wrote:
The MMC won't take this kind of power level. You will need to run the big Maxwells like we do on our coils over 6 kVA.Dr. ResonanceI thought I would share my newest creation, a 10kwatt DRSSTC @ http://users.cableaz.com/~chooper/images/fatboy1wred.jpg . Since I use plexy, I thought embedding high output UV LED's would be cool and looks like a spark gap running from the distance @ http://users.cableaz.com/~chooper/images/fatboyblue.jpg . Little red DRSSTC (ran at the Cheesehead)is in front of new DRSSTC for comparison, as the 10kwatter is almost 8 feet. 120 caps for the MMC and is fan cooled as I push my MMC's to melt down....he he. First light is this weekend.....then off to the 48kwatter DRSSTC...... first step of the 48kwatter is the 9 foot by 3 foot secondary. 48kwatter DRSSTC will also use a big, very big MMC; start soldering iron up indeed (maybe 500 caps or so) Rgs, Christopher robin