公开(公告)号：US20210175815A1

公开(公告)日：2021-06-10

申请号：US17108476

申请日：2020-12-01

Applicant: ROLLS-ROYCE plc

Inventor： Graham P. Bruce

IPC: H02M3/335 ,  H02M7/219 ,  H02P9/02 ,  H02J1/00

Abstract: Electrical systems for connecting rotary electric machines to dc networks operating at different voltages V and W where V>W are provided, along with gas turbine engine arrangements incorporating such systems.

公开(公告)号：US20220281609A1

公开(公告)日：2022-09-08

申请号：US17545312

申请日：2021-12-08

Applicant: ROLLS-ROYCE plc

Inventor： Graham P. Bruce

IPC: B64D31/00 ,  H02H9/02 ,  B64D27/02 ,  B64D27/10 ,  B64D27/24 ,  F02C3/00

Abstract: Electrical power systems for distributing electrical power in arrangements including one or more gas turbine engines; one such system includes: one or more rotary electric machines coupled to a gas turbine engine spool; a set of converter circuits connected to the rotary electric machines converting between alternating current (ac) and direct current (dc), wherein the rotary electric machines and the converter circuits output a number R≥2 of dc power channels, each channel having an index r=(1, . . . , R); and a group of N dc load channels connected to the R dc power channels by a switching arrangement, wherein N>R and each dc load channel has an index n=(1, . . . , N). For each respective N load channels, a current limiting device (CLD) limits the current flowing from power channels to a load connectable to the electrical power system via the respective load channel.

公开(公告)号：US10587122B2

公开(公告)日：2020-03-10

申请号：US16142021

申请日：2018-09-26

Applicant: ROLLS-ROYCE plc

Inventor： Graham P. Bruce

IPC: H02J4/00 ,  B64D27/02 ,  H01B9/02 ,  B63H21/17

Abstract: The present disclosure concerns an electrical interconnect system for a vehicle such as an aircraft or marine/submarine vessel. Example embodiments include a vehicle comprising: a first electrical generator; a second electrical generator; an engine arranged to drive the first and second electrical generators; a first electrical distribution system connected to the first electrical generator and arranged to distribute electrical power within the vehicle, the first electrical distribution system comprising a transmission path and a return path; a second electrical distribution system connected to the second electrical generator, the second electrical distribution system comprising a transmission path and a return path; an electric motor configured to provide propulsion for the vehicle and connected to the second electrical generator via the second electrical distribution system, wherein the return path of the second electrical distribution system provides a portion of the return path of the first electrical distribution system.

公开(公告)号：US20210172382A1

公开(公告)日：2021-06-10

申请号：US17108452

申请日：2020-12-01

Applicant: ROLLS-ROYCE plc

Inventor： Graham P. Bruce

IPC: F02C7/36 ,  H02J3/36 ,  H02K7/18

Abstract: Electrical systems for connecting rotary electric machines to dc networks operating at different voltages V and W where V>W along with gas turbine engine arrangements incorporating such systems.

公开(公告)号：US20210237893A1

公开(公告)日：2021-08-05

申请号：US17079906

申请日：2020-10-26

Applicant: Rolls-Royce plc

Inventor： Graham P. Bruce

IPC: B64D41/00 ,  B64D27/10 ,  B64D33/08 ,  B64D31/00 ,  F02C3/00

Abstract: An aircraft power generation system having an electrical power generator configured to be driven by a gas turbine engine of the aircraft is provided. The electrical power generator is further configured to be electrically coupled to one or more electrical loads of the aircraft, the electrical power generator being cooled by a coolant sub-system. The cooling performance of the coolant sub-system is affected by the operation of the gas turbine engine. The aircraft power generation system further has a control sub-system configured to dynamically control the electrical output power capability of the generator in accordance with the cooling performance of the coolant sub-system.