How do you drive a variable reluctance stepper/SRM as a generator?
I'm sorta guessing, sorta going on basic physics.  Here's one way that pretty much has to work -- but is almost guaranteed to not be the best way.  Drive it with a constant-current source, so that it'll generate an AC voltage impressed on whatever the \$I R\$ drop of its coils make.  Pick off that AC voltage, and run that to your load (shown as a resistor).  Turn the motor; enjoy.

Making it generate power efficiently would take, like, thought.







simulate this circuit &ndash; Schematic created using CircuitLab