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US 11,152,844 B2Granted
Electric machine
AssigneeROLLS-ROYCE plc
InventorsPaul R Miller, Stephen M Husband, Alexander C Smith, Charalampos Manolopoulos, Matteo Iacchetti
Life of this patent
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Abstract
An electric machine including a stator having a fully non-magnetic core and stator windings formed of a non-superconducting transposed conductor to reduce eddy current losses. It further includes a rotor having a fully non-magnetic core and superconducting windings or superconducting magnets which produce a magnetic field for interaction with the stator windings. A cryogenic cooling system is arranged to cool the stator windings to reduce conduction losses in the stator windings.
Claims15
An electric machine comprising:
- a stator having a fully non-magnetic core and stator windings formed of a non-superconducting transposed conductor to reduce eddy current losses;
- a rotor having a fully non-magnetic core and superconducting windings or superconducting magnets which produce a magnetic field for interaction with the stator windings;
- and
- a cryogenic cooling system that is configured to cool both the non-superconducting transposed conductor of the stator windings and the superconducting windings or superconductor magnets of the rotor, to reduce conduction losses in the stator windings and to maintain the superconducting windings or superconducting magnets of the rotor in a superconducting state.
1 more element
Dependencies are inferred from the claim text.