Patent ID: 11942820

Abstract:
An electric motor-generator with a plurality of field coils spaced about the periphery of a stator, and a plurality of permanent magnets spaced about the periphery of each of a pair of rotors, the pair of rotors disposed one on each side of the stator, such that during rotation of the rotors, a center of each magnet generally passes across a center of each coil.The magnets arrayed on respective rotors in alternate pole orientation N-S S-N, the magnets of one rotor offset from the magnets of the other rotor by one pole orientation, such that as a N pole on the one rotor is passing directly across one end of a field coil, a S pole of a corresponding magnet on the other rotor is passing directly across the other end of the field coll.A rotary electrical switch enables paired alternating periods of current flow and no current flow into respective stator field coils, such that in a period pair the period of current flow is shorter than the period of no current flow. A series of high capacity capacitors is wired in parallel with the field coil power supply such that the capacitors alternately discharge into the field coils when the field coils are switched ‘on’ In a motor mode, and the capacitors are charged by power from the field coils when the field coils are switched ‘off’ and are operating in a generator mode.