To create a generator, you have to have the rotor create a magnetic field. This is usually done by having windings on the rotor excited by a DC current via a pair of slip rings.
As the rotor turns, the magnetic field cuts the windings on the stator and induces a voltage.
Think automotive alternator.
On that basis, simply turning the rotor of a motor is not going to do much at all.
JimB
But I want to keep things simple for now. Thanks for the help!
Simple would be to either use a permanent magnet rotor type induction motor or a permanent magnet type DC motor as a the generator and just do a bit basic buck/boost voltage conversion to get the voltage you need.
OK, I ask again, where does the magnetism in the S/cage rotor come from ? There is no inherent magnetism in a rotor, the shorted windings of it take care of it, as the motor powers down.
Hold on, wait a minute...I did not know this...but I'm not remotely close to a motor expert either.
Are you saying that all other things being equal (and I know they're not, but go with it for arguments sake), you could take your average everyday $20 walmart window box fan, turn it on, spin it (either by hand or by sticking it outside in some of these crazy ND winds) some percent faster than it would normally go, and you'd be putting power back into the grid? (again, all other things being equal, for arguments sake, assuming everything in the world is perfect, the planets are lined up just right, and you're holding your tongue at the correct angle, etc)
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