公开(公告)号：US20250125608A1

公开(公告)日：2025-04-17

申请号：US18895786

申请日：2024-09-25

Applicant: ROLLS-ROYCE PLC

Inventor： David R. TRAINER ,  Mark SWEET ,  Cezary P. MAKULEC ,  Pablo A. BRIFF ,  John E. MAPPERSON

IPC: H02H7/12 ,  H02M3/335

Abstract: A DC:DC power electronics converter in an electrical power system includes: DC:AC and AC:DC converters; and an AC link connecting AC sides of the converters, the AC link including a transformer having first and second windings connected respectively to AC sides of the converters; a DC power source connected to the DC side of the DC:AC converter; a DC electrical network connected to the DC side of the AC:DC converter; and a control system to: control a switching operation of respective first and second pluralities of transistors of the converters, monitor one or more operating parameters of the electrical power system and determine whether there is a fault in the electrical network, and if so, modify a switching operation of the first and/or second plurality of transistors to supply a controlled amount of fault current from the DC power source to the electrical network via the DC:DC power electronics converter.