Hi,

I'm planning to get/build an high-voltage high-power isolated power supply to charge a capacitor bank.
I'm targeting these characteristics:
input voltage: 230v ac
output voltage: 400v dc
output ripple voltage: not a problem, as it is to charge capacitors
output power: ~1kW
I should say that it has to be isolated, and it will be used for a short amount of time (~10min)

So far, I'm only looking at the different options possible for this project.
I was planning on designing an isolated SMPS (to limit the size of the components and their associated price), yet the PCB I can produce are only one-sided, so not so great for SMPS.
If someone has a better solution ? or a link/schematic of a similar SMPS, I'd love to have at look at it

Thanks
Matt

 

Sounds like a time to buy vs build as you don't have the skills or capability to make it yourself...

 

Get a mains 1:1 transformer and bridge rectifier, that will give you approx 350v dc across the capacitors , otherwise your looking at a variable transformer for bigger voltages.

 

For the transformer route I would go with a 277:115/230 unit running in reverse.

277 VAC rectified and filtered is within a few volts of 400 VDC.