High-voltage high-power isolated power supply

Discussion in 'Power Electronics' started by matters_100, Jun 6, 2016.

  1. matters_100

    Thread Starter New Member

    Mar 30, 2016

    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 :)

  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    Sounds like a time to buy vs build as you don't have the skills or capability to make it yourself... ;)
  3. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    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.
  4. tcmtech

    Distinguished Member

    Nov 4, 2013
    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.