Patent ID: 9584056
Date: 2017-02-28
CPC Classifications: H02K,H02P

Claim:
1. A method of operating a generator, said generator comprising: a driveshaft; a first rotor rotatable by said driveshaft, said first rotor having a first array of magnets mounted thereon; a first stator having a first plurality of electrically conductive coils mounted thereon, wherein rotation of said first rotor relative to said first stator induces a current in at least some of said electrically conductive coils; said method comprising controlling an output voltage of said generator by dynamically modifying an electrical connection between coils of said first plurality of electrically conductive coils; wherein said first plurality of electrically conductive coils are grouped into a plurality of stages, each stage comprising at least one electrically conductive coil, wherein rotational resistance for rotating said driveshaft increases when each stage is electrically energized from an open to a closed circuit, said method further comprising selectively electrically energizing each of said stages to increase the rotational resistance for rotating said driveshaft when said driveshaft rotates at a predetermined rotational speed.