Patent ID: 10483891

Abstract:
Embodiments herein relate to a permanent magnet (PM) dynamoelectric machine. The machine includes a drive shaft, a PM rotor assembly with multiple PMs arranged around a periphery of the rotor assembly, a first stator assembly including a stator yoke, having stator teeth mounted to the stator core with distal ends proximate the outer periphery of the rotor assembly separated by a first air gap and multiple stator coils mounted between the stator teeth. The machine also includes a second stator assembly including a stator yoke, having stator teeth mounted to the stator core with distal ends forming closed slots, proximate an inner periphery of the rotor assembly separated by a second air gap and at least one control coil, the a control coil wrapped about a saturable region of the stator teeth thereof, each saturable region is operable to divert magnetic flux of the PMs through the stator teeth.