Motor generator

[Brent Hilpert]

On 2021-May-04, at 4:06 PM, Donald via cctalk wrote:
> In the deep recesses of my mind I seem to remember something about S/360
> machines using a motor generator.
> 
> If I am right was this to create a stable power source at a certain
> frequency or voltage?

I dont know about the 360, but a motor/gen can provide several benefits:
	- isolate the load side from mains noise
	- provide a degree of regulation from mains fluctuation thanks to the inertia of the rotating mass
	- raise the frequency so subsequent power supply transformers and caps can be smaller (ala 400Hz operation in aircraft) 
	- convert to 3-phase as Chuck mentioned, although I would have thought that by the time a 360 is running from a motor-gen
	  it's probably already being supplied with incoming 3-phase mains