公开(公告)号：US11152844B2

公开(公告)日：2021-10-19

申请号：US16548032

申请日：2019-08-22

Applicant: ROLLS-ROYCE plc

Inventor： Paul R Miller ,  Stephen M Husband ,  Alexander C Smith ,  Charalampos Manolopoulos ,  Matteo Iacchetti

IPC: H02K55/04 ,  H02K3/02 ,  H02K3/14 ,  H02K3/42 ,  H02K7/18 ,  B64D27/24 ,  B64D27/02

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.

公开(公告)号：US10131441B2

公开(公告)日：2018-11-20

申请号：US15136074

申请日：2016-04-22

Applicant: ROLLS-ROYCE PLC

Inventor： Huw L. Edwards ,  Alexander C Smith ,  Judith M. Apsley ,  Charalampos Manolopoulos

IPC: B64D27/02 ,  B64D35/02 ,  B64D27/24

Abstract: An electrical network for an aircraft. The aircraft includes at least one variable pitch propulsor. The electrical network includes a wound field synchronous AC electrical generator having a wound rotor driven by an internal combustion engine. The network further includes a voltage regulator configured to regulate output voltage of the electrical generator by regulating rotor winding magnetic field strength, and a synchronous AC drive motor coupled to a respective variable pitch propulsor and provided with power from the output of the electrical generator.