Originally Posted by Efiero
Ok lf it is an AC is there a way to figure out how many rpms it will turn with a given voltage
Usually, for 60 Hz AC, 1800 or 3600 RPM, depending if it 4 pole or 2 pole. And that would be for 115/230 VAC. Larger generators would probably have taps for both.
and are ac controlers much more $ than the DC
Your idea here may be technically possible, but not practically feasible.