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Registered Member #1143
Joined: Sun Nov 25 2007, 04:55PM
Location: Vilnius, Lithuania
Posts: 721
Small update. i just get new snubber, it's 1,5KA peak 800VDC 20uF ultra low L snubber designed for high power inverters, so now i have 24uF of snubbers :) And also, soon PMMA will be cutted by CNC machine :)
Registered Member #1143
Joined: Sun Nov 25 2007, 04:55PM
Location: Vilnius, Lithuania
Posts: 721
Thank you Arcstarter Now how to make proper grounding for coil ? because i have everything inside metal box, and basic electronics are also in another aluminum box ( double protection ) so potential difference between IGBT and driver electronics zero should be limited to ground to 500V ( 1200Vmax ) i think use 500V varistor ( 12 in parallel, so 500V and 4000J 78KApeak )
Update ! MMC is ready so 8KV and 896nF, 120Arms and 5,144KApeak
Registered Member #2750
Joined: Sun Mar 21 2010, 08:47PM
Location: Poland
Posts: 46
Some time watching the progress in the construction of this coil and I am very impressed by the precision execution of all parts. When do you plan a first light. i can not wait ;)
Registered Member #2481
Joined: Mon Nov 23 2009, 03:07PM
Location: ITALY
Posts: 134
Hi Linas
Just a suggestion: if you want to push your MMC close to the max rating (in particular rms current) I would not enclose capacitors in a sealed cabinet as you have done. Moreover, your capacitors are very close each other, so, there is not possibility for heat dissipation. I recommend you to put a couple of fans (12VDC, few W) on one side of your MMC cabinet and drill some holes on the other side of the cabinet. Maybe I would also increase the space between the capacitors...
Registered Member #1143
Joined: Sun Nov 25 2007, 04:55PM
Location: Vilnius, Lithuania
Posts: 721
Luca wrote ...
Hi Linas
Just a suggestion: if you want to push your MMC close to the max rating (in particular rms current) I would not enclose capacitors in a sealed cabinet as you have done. Moreover, your capacitors are very close each other, so, there is not possibility for heat dissipation. I recommend you to put a couple of fans (12VDC, few W) on one side of your MMC cabinet and drill some holes on the other side of the cabinet. Maybe I would also increase the space between the capacitors...
Regards
Luca
i will run some test with DRSSTC (powered by CM600 ) and if they can heat it up, i will add some fans, now ihave just pore 6KW to run it, so they will be just warm, ( and i will run just for 10min, not 5h )
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Large DRSSTC [update]
