公开(公告)号：US20230159177A1

公开(公告)日：2023-05-25

申请号：US18053015

申请日：2022-11-07

Applicant: ROLLS-ROYCE plc

Inventor： David R. TRAINER ,  Francisco Javier CHIVITE ZABALZA ,  Mark SWEET ,  Luke GEORGE ,  Gian INCERPI

IPC: B64D27/24 ,  H02M3/28 ,  H02J1/10 ,  H02J7/34

CPC classification number: B64D27/24 ,  H02M3/28 ,  H02J1/106 ,  H02J7/34 ,  B64D2221/00 ,  H02J2310/44

Abstract: The disclosure relates to an electrical power system for providing a stabilised DC voltage to a power bus. Example embodiments include an electrical power system comprising: a DC power bus having first and second DC power bus terminals; an electrical storage unit having first and second terminals, the second terminal connected to the second DC power bus terminal; a DC:DC converter having first and second DC:AC converters and a transformer connected between the first and second DC:AC converters, the first DC:AC converter connected between the first terminal of the electrical storage unit and the first DC power bus terminal; and a controller connected to control a switching operation of one or both of the first and second DC:AC converters.

公开(公告)号：US20230136376A1

公开(公告)日：2023-05-04

申请号：US17957778

申请日：2022-09-30

Applicant: Rolls-Royce plc

Inventor： David R. TRAINER ,  Francisco Javier CHIVITE ZABALZA ,  Mark SWEET ,  Gian INCERPI ,  Luke GEORGE

IPC: H02J7/00 ,  H02M3/335 ,  B64D27/24

Abstract: An electrical power system including: an electrical power source, a power electronics converter, an electrical network, a current limiting diode and a controllable circuit interruption device, wherein: the current limiting diode is configured to limit a fault current passing between the electrical power source and the electrical network in a fault condition; and the controllable circuit interruption device is configured to interrupt the fault current in response to a determination that the electrical power system is in the fault condition.