How can I design a dc to ac inverter which will not use a transformer?

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Bharathi1

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Hi i have planned to design a dc to ac converter with 12vDC input and 230VA output, Please guide me how can i design inverter without transformer?
 

* Feed 12VDC to a x27 boost converter, to obtain 330VDC.
Then an H-bridge to obtain AC.

* Feed 12VDC to a x27 boost converter to obtain +330VDC, and a buckboost to obtain -330VDC.
Alternately chop the outputs (at 50/60 Hz) to obtain AC.

* Feed 12VDC to an H-bridge to create 12 VAC.
Then a x30 capacitor-based voltage multiplier, to obtain 330 VDC.
Then an H-bridge to obtain AC.
 

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