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Re: [TCML] Help with custom capacitor design

Hi Greg,
is there any reason why not just use a Maxwell Cap with these specs? By the way, 3 years ago I have built a similar DC resonant charging system (still without primary / secondary coils, but charging system works very well...). Have a look at my video: 

https://www.youtube.com/watch?v=w5-x84V9Pqk

Regards,

Stefan


Am 10.10.2018 um 11:54 schrieb Greg Peters:

Hi All,

I’m working on a large 3-phase DC resonant charged magnifier coil and would like to attempt to order a custom capacitor to enable a small, neat and compact design.

The coil is going to run at about 15kVA with the primary cap charged to near 18kV at 500BPS. I expect Fres to be between 75 and 100kHz, so peak primary currents of perhaps 2000 to 3000 amps.

I was thinking I would specify a 40kV DC and 5000 amp peak rating – how does that sound?

Now, is anyone able to offer some advice regarding the specs I should request for things like:

RMS current,
DV/DT
ESL
ESR
Ripple Voltage (assume 100%???)
Etc

Any advice would be greatly appreciated!

Regards,

Greg



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