公开(公告)号：US11955754B2

公开(公告)日：2024-04-09

申请号：US16803408

申请日：2020-02-27

Applicant: Rolls-Royce Corporation

Inventor： David Loder

IPC: H01R13/6592 ,  H01B7/30 ,  H01B9/02 ,  H01R13/187

CPC classification number: H01R13/6592 ,  H01B9/027 ,  H01R13/187 ,  B64D2221/00 ,  H01B7/303

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：US11840148B2

公开(公告)日：2023-12-12

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 ,  Eirik Mathias Husum ,  Erlend Engevik ,  Roar Furuhaug ,  Chandana Jayampathi Gajanayake

IPC: B60L3/00 ,  B60L3/04 ,  B64D27/24 ,  B64D27/02

CPC classification number: B60L3/003 ,  B60L3/04 ,  B64D27/24 ,  B60L2200/10 ,  B60L2210/30 ,  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.

公开(公告)号：US20230257127A1

公开(公告)日：2023-08-17

申请号：US17651177

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: B64D27/24 ,  B60L3/00

CPC classification number: B64D27/24 ,  B60L3/003 ,  B60L2200/10 ,  B64D2027/026

Abstract: A system for providing propulsive electrical power for an aircraft, the system comprising: a first generator configured to output a first plurality of AC electrical signals; a second generator configured to output a second plurality of AC electrical signals; a first set of rectifiers configured to convert the first plurality of AC electrical signals into a first plurality of DC electrical signals for output onto a first DC electrical bus of a plurality of DC electrical busses; and a second set of rectifiers configured to convert the second plurality of AC electrical signals into a second plurality of DC electrical signals for output onto a second DC electrical bus of the plurality of DC electrical busses, wherein each rectifier of the plurality of rectifiers includes a respective controller of a plurality of controllers, and wherein the plurality of controllers are configured to coordinate response to detected faults.

公开(公告)号：US11703536B2

公开(公告)日：2023-07-18

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

CPC classification number: G01R31/1272 ,  G01R19/16576 ,  G01R31/392

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：US20220413034A1

公开(公告)日：2022-12-29

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

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：US11514732B2

公开(公告)日：2022-11-29

申请号：US16803382

申请日：2020-02-27

Applicant: Rolls-Royce Corporation

Inventor： David Loder

IPC: G07C5/08 ,  B64F5/60 ,  G07C5/10 ,  B60L3/12 ,  G01K7/16 ,  G01N33/00 ,  G01L11/00

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：US20220363402A1

公开(公告)日：2022-11-17

申请号：US17321146

申请日：2021-05-14

Applicant: Rolls-Royce Corporation

Inventor： Peter Schenk ,  David Loder ,  David Trawick

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

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.