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Originally Posted by MPaulHolmes
I used one of the AC control/driver boards to make a 240v/120v split phase inverter, so that there are 2 120v supplies, and a neutral. The 2 120v supplies are 180 degrees out of phase, so you can use the 2 hots to make the 240vAC.
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This is GREAT news! Looking forward to seeing that code!
Does the inverter deal with the current surge drawn by an induction motor starting up, like an air conditioner, or a water pump?
It may make sense to have an option for soft start, where the inverter ramps up from 0.5 Hz to 60 Hz in 2 - 5 seconds to avoid that 5 to 10 times rated current surge from a single connected motor.
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Oh, and you can just change one little setting, and boom, you have 3 phase power at your house! 208v 3 phase up to 480v 3 phase.
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YET MORE AWESOME PROGRESS!
I just happen to have a 30 HP, 575V, 3 phase motor that I can use to stress the startup of a 3 phase 'supply'.
Sounds like I will have to start working on connecting the 2 AC Controller boards that I have. I really want to get the split phase output working at a 48V buss so that I can run a sump pump in the spring ... using a golf cart as the power supply. I will try running at 60 Hz, but I doubt that the motor on the sump pump will operate properly at the lower voltage ... I guess I'll see ...
Assuming that I get any of this done ..