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Increase current of SPWM Inverter

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Kryptone

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Hello,
How do I increase the current at the output of my SPWM inverter? I am using 12V, 15A at input to dc-dc converter and I require 110 V-AC at about 10-15A at the output of the inverter.

Please help
 

kam1787

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is it your design or a commercial unit?

if you want 10A at 110VAC as the output, then you will need the input to handle at least 100A - is that realistic?
 

Kryptone

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is it your design or a commercial unit?

if you want 10A at 110VAC as the output, then you will need the input to handle at least 100A - is that realistic?

my design......so couldnt I amplify the current using transistors?
 

Kryptone

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Why is the use of high dc voltage inverter preferred over the low dc voltage?
 

Kryptone

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The input stages of a SMPS are tied to the incoming voltage most are 230V input, so the first thing to do is to rectify the AC which gives 230 X 1.4 ~ 320V.
Frank

I get 180 Vdc from dc-dc converter which I fed into drain of h-bridge. I get ac output but not anything near 110 or 120 V-AC instead I get about 20 V-AC which is the same I got when I used low voltage varied from 12 to 16Vdc. What could be wrong?????
 

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