公开(公告)号：US20230137501A1

公开(公告)日：2023-05-04

申请号：US17957273

申请日：2022-09-30

Applicant: Rolls-Royce plc

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

IPC: H02H9/02 ,  G05F3/24

Abstract: There is provided a current limiting diode comprising a gate, a source, and a drain electrically connected to the source by an n-channel or p-channel; wherein the source and the gate are electrically connected by a fill structure comprising a phase-change fill material, and wherein the phase-change fill material is configured to absorb heat from the n-channel or p-channel by changing phase.

公开(公告)号：US20230123533A1

公开(公告)日：2023-04-20

申请号：US17950445

申请日：2022-09-22

Applicant: ROLLS-ROYCE plc

Inventor： Francisco Javier CHIVITE ZABALZA ,  David R TRAINER ,  Mark SWEET ,  Matthew C MORRIS ,  Zafer JARRAH ,  James A CAMPBELL

IPC: F02C6/00 ,  H02J3/02 ,  H02M5/458 ,  H02M7/219 ,  H02M1/00 ,  H02J3/01 ,  H02J3/00 ,  B64D27/10 ,  B64D27/24

Abstract: A electrical power system comprises: an electrical machine operable to output AC; a DC electrical network; a power electronics converter connected between the AC output of the electrical machine and the DC electrical network and including a plurality of transistors and associated diodes connected in parallel with the transistors; and a controller configured to control switching of the transistors of the converter so that, during normal operation of the electrical power system, the converter rectifies the AC output of the electrical machine to supply the DC electrical network with DC electrical power. The controller is further configured, responsive to a determination to the effect there is a fault in the DC electrical network, to control a voltage source, to inject a voltage to bias the diodes of the converter, and to control the switching of the transistors to control a level of current supplied to the faulted DC electrical network.