Electro-magnetic coupling system
AssigneeROLLS-ROYCE plc
InventorJohn Edward Anthony
Life of this patent
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Abstract
An electro-magnetic coupling system for transferring torque between a pair of coaxial spools of a gas turbine engine is provided. The system includes a first rotor rotatable with one of the spools, a second rotor rotatable with the other of the spools, and a stator. The first and second rotors and the stator are coaxial with each other. The second rotor operably couples the first rotor and the stator. The first rotor carries a plurality of magnetic flux-producing formations which produce a first magnetic field. The stator carries a plurality of electrical winding coils which are energisable to generate a second magnetic field. The second rotor carries an arrangement of interpoles which modulate the first and second magnetic fields such that the modulated fields interact to transfer torque between the spools.
Claims17
An electro-magnetic coupling system for transferring torque between a pair of coaxial spools of a gas turbine engine, the system including a first rotor rotatable with one of the spools, a second rotor rotatable with the other of the spools, and a stator, the first and second rotors and the stator being coaxial with each other, and the second rotor operably coupling the first rotor and the stator;
- wherein:
- the first rotor carries a plurality of magnetic flux-producing formations which produce a first magnetic field,
- the stator carries a plurality of electrical winding coils which are energisable to generate a second magnetic field, and
- the second rotor carries an arrangement of interpoles which modulate the first and second magnetic fields such that the modulated fields interact to transfer torque between the spools.
An electro-magnetic coupling system for generating electrical power from a pair of coaxial spools of a gas turbine engine, the system including a first rotor rotatable with one of the spools, a second rotor rotatable with the other of the spools, and a stator, the first and second rotors and the stator being coaxial with each other, and the second rotor operably coupling the first rotor and the stator;
- wherein:
- the first rotor carries a plurality of magnetic flux-producing formations which produce a magnetic field,
- the second rotor carries an arrangement of interpoles which modulate the magnetic field, and
- the stator carries a plurality of electrical winding coils which are arranged to transduce the modulated magnetic field into electrical energy.
Dependencies are inferred from the claim text.