I have been trying my best to put some few things together as per building electronics and electrical equipment but i really lack circuit diagrams that can put me through. i presntly need a circuit diagram of an inverter with atleast 20kVA output.
There is one very important thing missing in your question: What will be your DC input voltage? Because you can forget 12Volt . you would need 2,000 Ampere from your battery to achieve 20kVA @ 85% efficiency! Most inverters I know in this league have between 350 and 600 Volt DC input.
There's a 1KVA inverter at aaroncake /circuits/invert To crank up the output you need to uprate the transformer and add parallel transistors.
