Upgrading dc/ac converter schematics

Discussion in 'General Electronics Chat' started by Enc2012, Oct 11, 2012.

  1. Enc2012

    Thread Starter New Member

    Oct 11, 2012
    16
    0
    Hi.
    The idea was to create stronger version of this:
    http://www.instructables.com/id/250-to-5000-watts-PWM-DCAC-220V-Power-Inverter/
    -----------------------------------------------------------------
    1.) How to change this design to 72V input

    2.) If i look at the data table that is presented on the web page,
    4500W should be reachable with 72V. This is too small for me.
    I need to get 8kw at 72V input (i have battery bank 72V-135Ah)

    http://www.instructables.com/id/250-to-5000-watts-PWM-DCAC-220V-Power-Inverter/

    Can someone help with redesign ?
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,998
    745
    You would need to up the power stage in the "box" with a higher Mosfet stage like this,

    your transformer would have to be wound for 72V to 230V instead of the 12v to 230v.

    [ for some reason its cropped the bottom of the drawing, the bottom is a mirror image of the top half]
     
    Last edited: Oct 11, 2012
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