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Hey! And you could probably use one or 2 of the phases of the motor as the inductor! Then all you'd need to do is include a filter cap in the circuit, which could be done just by adding a relay. Bam! Instant power to the house. I don't have a clue what a 40kW pure sine wave inverter would cost.
The parts for the controller are around $400-$450, but in bulk it could be cheaper. The igbts and capacitors in bulk would be a HUGE cost savings.
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