公开(公告)号：US20210214094A1

公开(公告)日：2021-07-15

申请号：US17197708

申请日：2021-03-10

Applicant: ROLLS-ROYCE PLC

Inventor： Richard HARWOOD ,  Kalyani G. MENON ,  Joseph PALMER ,  Ivan POPOVIC

IPC: B64D27/24 ,  B63H21/20 ,  H02P5/74 ,  B61C5/00 ,  B63H21/17 ,  B64D27/02 ,  H02J3/46 ,  H02J7/34 ,  H02J3/02

Abstract: An aircraft propulsion system includes at least first and second electrical generators, each being configured to provide electrical power to a respective first and second AC electrical network. The system further comprises at least first and second AC electrical motors directly electrically coupled to a respective AC network and coupled to a respective propulsor, and a DC electrical network electrically coupled to the first and second AC networks via respective first and second AC to DC converters, and to a further electrical motor, the further electrical motor being coupled to a propulsor.

公开(公告)号：US20180269760A1

公开(公告)日：2018-09-20

申请号：US15915229

申请日：2018-03-08

Applicant: ROLLS-ROYCE plc

Inventor： Joseph PALMER

IPC: H02K16/00 ,  H02P29/00 ,  B64C21/06

Abstract: An axial flux electrical machine comprises a first flux generating assembly, a second flux generating assembly, a shaft and a speed controller. The shaft has an axis of rotation. Each of the first flux generating assembly and the second flux generating assembly is rotationally located on the shaft in axial juxtaposition to one another, with the first flux generating assembly being axially separated from the second flux generating assembly by a separation distance. The speed controller is configured to modify a magnetic field generated by either of the first flux generating assembly and the second flux generating assembly so as to control a rotational speed of the electrical machine.

公开(公告)号：US20180079515A1

公开(公告)日：2018-03-22

申请号：US15684265

申请日：2017-08-23

Applicant: ROLLS-ROYCE PLC

Inventor： Richard HARWOOD ,  Kalyani G. MENON ,  Joseph PALMER ,  Ivan POPOVIC

IPC: B64D27/24

CPC classification number: B64D27/24 ,  B61C5/00 ,  B63H21/17 ,  B63H21/20 ,  B64D27/02 ,  B64D27/10 ,  B64D2027/026 ,  H02J3/005 ,  H02J3/02 ,  H02J3/46 ,  H02J7/34 ,  H02P5/74 ,  Y02T30/10 ,  Y02T50/44 ,  Y02T50/64 ,  Y02T70/5209 ,  Y02T70/5236 ,  Y02T90/46

Abstract: An aircraft propulsion system (10) comprises at least first and second electrical generators (15a, 15b), each being configured to provide electrical power to a respective first and second AC electrical network (16a, 16b). The system (10) further comprises at least first and second AC electrical motors (19a, 19b) directly electrically coupled to a respective AC network (16a, 16b) and coupled to a respective propulsor (4), and a DC electrical network electrically coupled to the first and second AC networks (16a, 16b) via respective first and second AC to DC converters (17a, 17b), and to a further electrical motor 19c), the further electrical motor (19c) being coupled to a propulsor (4).