15,000 Watt power inverter circuit diagram

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I need an electronic circuit diagram for an DC to AC power inverter with a range of 5KVA to 30KVA,
The inverter should be a transformer based power inverter.
The waveform should be either sine wave or pure sine wave
For high wattage inverters a 3 phase design would be fine while for small wattage inverter a single phase design would be fine.
It should be a common circuit diagram with PCB layout this means i should have an option to add components to achieve any high wattage inverter from a small wattage inverter.
The inverter should be designed in a manner that they have option of combining several together to attain the wattage i may require e.i if i need 45KVA i can combine 3*15KVA inverters and have a single output of 45KVA.
The DC input voltage should remain a low as possible.
Idle Consumption should be as low as possible.
The inverter should have high efficiency of above 95%.
The design should include the transformer design

Skills required:
Electronics, PCB Layout
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