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US 2023/0155466 A1Published application
Multi-rotor electric machine
AssigneePratt & Whitney Canada Corp.
InventorAntwan SHENOUDA
Life of this patent
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Abstract
A multi-rotor electric machine having a stator, a first rotor magnetically coupled to the stator and a second rotor magnetically coupled to the stator is disclosed. A method of operating the electric machine comprises driving a gear via a first face of the gear using the first rotor and driving the gear via a second face of the gear using the second rotor.
Claims20
A multi-rotor electric machine comprising:
- a stator;
- a first rotor magnetically coupled to the stator and rotatably mounted relative to the stator;
- a second rotor magnetically coupled to the stator and rotatably mounted relative to the stator;
- and
- a gear drivingly coupled to both the first and second rotors, the first rotor being drivingly coupled to a first face of the gear and the second rotor being drivingly coupled to a second face of the gear.
2 more elements
An electric machine comprising:
- a plurality of stators circumferentially distributed about a central axis of the electric machine;
- a plurality of rotors arranged in triplets, each triplet of rotors sharing a common magnetic circuit with a respective one of the stators, each triplet of rotors comprising an adjacent pair of radially-outer rotors and a radially-inner rotor relative to the central axis;
- and
- a common gear rotatable about the central axis and drivingly coupled to the plurality of magnetic rotors, the radially-outer rotors being drivingly coupled to a radially-outer face of the common gear and the radially-inner rotors being drivingly coupled to a radially-inner face of the common gear.
1 more element
A method of operating an electric machine having a stator, a first rotor magnetically coupled to the stator and a second rotor magnetically coupled to the stator, the method comprising:
- driving a gear via a first face of the gear using the first rotor;
- and
- while the gear is driven using the first rotor, driving the gear via a second face of the gear using the second rotor.
Dependencies are inferred from the claim text.