Patent ID: 11923733
Assignee: QUANTENTECH LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A system comprising:
a stator with an inner surface and an outer surface, wherein:
a plurality of first slots is distributed along the inner surface and is separated from each other by a plurality of first teeth;
a plurality of second slots distributed along the outer surface and is separated from each other by a plurality of second teeth; and
a plurality of windings is located between the inner surface and the outer surface, each of the plurality of windings comprising a plurality of first conductors in a first slot and a plurality of second conductors in a second slot adjacent to the first slot, wherein one of the plurality of windings starts with a partial-phase slot in a direction;

a plurality of rotors magnetically coupled to the stator, wherein a first rotor faces the inner surface of the stator and a second rotor faces the outer surface of the rotor;
a first airgap between the inner surface of the stator and the first rotor, and a second airgap between the outer surface of the stator and the second rotor, wherein the plurality of first conductors, the first airgap, and the first rotor form a first submotor, and the plurality of second conductors, the second airgap, and the second rotor form a second submotor; and
a plurality of power converters coupled to the plurality of windings, wherein the plurality of power converters are configured to control currents in the plurality of windings so that the first submotor and the second submotor are configured to produce mechanical torques in a same direction in an operation mode.