公开(公告)号：US11952139B2

公开(公告)日：2024-04-09

申请号：US17321146

申请日：2021-05-14

Applicant: Rolls-Royce Corporation

Inventor： Peter Schenk ,  David Loder ,  David Trawick

IPC: B64D31/06 ,  B60L50/60 ,  B60L58/19 ,  B64D27/24 ,  H02J1/00

CPC classification number: B64D31/06 ,  B60L50/60 ,  B60L58/19 ,  B64D27/24 ,  B60L2200/10 ,  B60L2210/10 ,  B64D2221/00 ,  H02J1/00

Abstract: A voltage controlled aircraft electric propulsion system includes an electric propulsion system. The voltage controlled aircraft electric propulsion system may include electric propulsors providing thrust for the aircraft. In hybrid systems, a gas turbine engine may also be included. The electric propulsion system may include at least one electric generator power source, at least one propulsor motor load, and at least one stored energy power source, such as a battery. The propulsor motor load may be supplied power from a power supply bus. The voltage of the power supply bus may be adjusted according to an altitude of the aircraft while maintaining a substantially constant current flow to the propulsor motor load. Due to the adjustment to lower voltages at increased altitude, insulations levels may be lower.

公开(公告)号：US20230039344A1

公开(公告)日：2023-02-09

申请号：US17444734

申请日：2021-08-09

Applicant: Rolls-Royce Corporation

Inventor： Peter Schenk ,  Mathew Hill ,  David Loder

IPC: H02K1/04 ,  B64D27/24 ,  H02K1/27 ,  H02K1/02 ,  H02K15/10 ,  H02K1/30 ,  H02K15/03

Abstract: A rotor assembly includes a rotor core having an axial length and configured to rotate about a longitudinal axis and at least one permanent magnet disposed about a radially outer surface of the rotor core. The rotor assembly further includes an electrical insulator disposed between the radially outer surface of the rotor core and the at least one permanent magnet and configured to disrupt an electrical conduction path along the axial length of the rotor core.

公开(公告)号：US20210273382A1

公开(公告)日：2021-09-02

申请号：US16803408

申请日：2020-02-27

Applicant: Rolls-Royce Corporation

Inventor： David Loder

IPC: H01R13/6592 ,  H01R13/187

Abstract: In examples of the disclosure, a device may be couple an electrical load to a power source. The device may have a first coupling configured to couple to the power source and a second coupling configured to couple to the electrical load. The device may have a plurality of strands electrically disposed between the first coupling and the second coupling. Each of the plurality of strands may have a coating having a resistivity greater than 1.8×10−8 Ω-m and less than 1 Ω-m and a center conductor wrapped, at least in part, by the coating.

公开(公告)号：US20230261595A1

公开(公告)日：2023-08-17

申请号：US17651156

申请日：2022-02-15

Applicant: Rolls-Royce Corporation ,  Rolls-Royce Electrical Norway AS ,  Rolls-Royce Singapore Pte. Ltd.

Inventor： David Loder ,  David Russell Trawick ,  Eirik Mathias Husum ,  Erlend Engevik ,  Roar Furuhaug ,  Chandana Jayampathi Gajanayake

IPC: H02P9/00 ,  B64D27/10 ,  B64D27/24

CPC classification number: H02P9/006 ,  B64D27/10 ,  B64D27/24 ,  B64D2027/026

Abstract: A turbo-generator system for generating propulsive electrical power for an aircraft includes an electric machine comprising: a rotor configured to be rotated by a gas-turbine of the turbo-generator system; a stator comprising: a first active section comprising first windings surrounding a first portion of the rotor; and a second active section comprising second windings surrounding a second portion of the rotor.

公开(公告)号：US11703535B2

公开(公告)日：2023-07-18

申请号：US17358708

申请日：2021-06-25

Applicant: Rolls-Royce Corporation

Inventor： David Loder ,  Sándor Hallai ,  Gábor Nagy ,  Máté Bérces ,  Péter Bence Németh

IPC: G01R31/12 ,  G01R27/02

CPC classification number: G01R31/1272 ,  G01R27/02

Abstract: A fault monitoring device may monitor and detect for faults corresponding to a high-side voltage rail, to low-side voltage rail, or internally within a voltage source connected to the high-side voltage rail and the low-side voltage rail. The fault monitoring device may determine sample voltage levels and/or sample resistance values to detect the faults. Also, in various embodiments, the fault monitoring device may perform one or more fault monitoring processes over multiple stages. The fault monitoring device may determine the sample voltage levels and/or the sample resistance values while switching a secondary resistance circuit in different states over the multiple stages.

公开(公告)号：US20210272396A1

公开(公告)日：2021-09-02

申请号：US16803382

申请日：2020-02-27

Applicant: Rolls-Royce Corporation

Inventor： David Loder

IPC: G07C5/08 ,  G07C5/10 ,  B64F5/60 ,  B60L3/12

Abstract: An example method includes receiving, by one or more processors and via a sensor, a signal representing operational characteristics of a device included in an aircraft; determining, by the one or more processors and based on the signal, a partial discharge intensity value; receiving, by the one or more processors and via an environmental sensor, at least one environmental measurement of the device; modifying, by the one or more processors and based on the at least one environmental measurement, the partial discharge intensity value to determine a modified partial discharge intensity value; and responsive to determining that the modified partial discharge intensity value satisfies a threshold, outputting an alert signal for the device.

公开(公告)号：US12095405B2

公开(公告)日：2024-09-17

申请号：US17651156

申请日：2022-02-15

Applicant: Rolls-Royce Corporation ,  Rolls-Royce Electrical Norway AS ,  Rolls-Royce Singapore Pte. Ltd.

Inventor： David Loder ,  David Russell Trawick ,  Eirik Mathias Husum ,  Erlend Engevik ,  Roar Furuhaug ,  Chandana Jayampathi Gajanayake

IPC: H02P9/00 ,  B64D27/10 ,  B64D27/24 ,  B64D27/02 ,  H02P101/25 ,  H02P101/30

CPC classification number: H02P9/006 ,  B64D27/10 ,  B64D27/24 ,  B64D27/026 ,  B64D2221/00 ,  H02P2101/25 ,  H02P2101/30

Abstract: A turbo-generator system for generating propulsive electrical power for an aircraft includes an electric machine comprising: a rotor configured to be rotated by a gas-turbine of the turbo-generator system; a stator comprising: a first active section comprising first windings surrounding a first portion of the rotor, and a second active section comprising second windings surrounding a second portion of the rotor.

公开(公告)号：US12027915B2

公开(公告)日：2024-07-02

申请号：US17444734

申请日：2021-08-09

Applicant: Rolls-Royce Corporation

Inventor： Peter Schenk ,  Mathew Hill ,  David Loder

IPC: H02K1/02 ,  H02K1/04 ,  H02K1/278 ,  H02K1/30 ,  H02K15/03

CPC classification number: H02K1/04 ,  H02K1/02 ,  H02K1/278 ,  H02K1/30 ,  H02K15/03

Abstract: A rotor assembly includes a rotor core having an axial length and configured to rotate about a longitudinal axis and at least one permanent magnet disposed about a radially outer surface of the rotor core. The rotor assembly further includes an electrical insulator disposed between the radially outer surface of the rotor core and the at least one permanent magnet and configured to disrupt an electrical conduction path along the axial length of the rotor core.

公开(公告)号：US20220413035A1

公开(公告)日：2022-12-29

申请号：US17358754

申请日：2021-06-25

Applicant: Rolls-Royce Corporation

Inventor： David Loder ,  Sándor Hallai ,  Gábor Nagy ,  Máté Bérces ,  Péter Bence Németh

IPC: G01R31/12 ,  G01R31/392 ,  G01R19/165

Abstract: A fault monitoring device may monitor and detect for faults corresponding to a high-side voltage rail, to low-side voltage rail, or internally within a voltage source connected to the high-side voltage rail and the low-side voltage rail. The fault monitoring device may determine sample voltage levels and/or sample resistance values to detect the faults. Also, in various embodiments, the fault monitoring device may perform one or more fault monitoring processes over multiple stages. The fault monitoring device may determine the sample voltage levels and/or the sample resistance values while switching a secondary resistance circuit in different states over the multiple stages.

公开(公告)号：US20230256828A1

公开(公告)日：2023-08-17

申请号：US17651161

申请日：2022-02-15

Applicant: Rolls-Royce Corporation ,  Rolls-Royce Electrical Norway AS ,  Rolls-Royce Singapore Pte. Ltd.

Inventor： David Loder ,  David Russell Trawick ,  Erik Mathias Husum ,  Erlend Engevik ,  Roar Furuhaug ,  Chandana Jayampathi Gajanayake

IPC: B60L3/00 ,  B64D27/24 ,  B60L3/04

CPC classification number: B60L3/003 ,  B60L3/04 ,  B64D27/24 ,  B64D2027/026

Abstract: A system includes a first generator configured to output a first plurality of AC signals; a second generator configured to output a second plurality of AC signals; a first set of rectifiers configured to convert the first plurality of AC signals into a first plurality of DC signals for output onto a first DC bus, wherein each of the first set of rectifiers includes a respective contactor configured to de-couple a DC output of the respective rectifier from the first DC electrical bus; and a second set of rectifiers configured to convert the second plurality of AC signals into a second plurality of DC signals for output onto a second DC bus, wherein each of the second set of rectifiers includes a respective contactor configured to de-couple a DC output of the respective rectifier from the second DC bus.