公开(公告)号：US20240192267A1

公开(公告)日：2024-06-13

申请号：US18523528

申请日：2023-11-29

Applicant: ROLLS-ROYCE PLC

Inventor： Mohamed Sathik MOHAMED HALICK ,  Prasanth Sundararajan ,  Viswanathan Vaiyapuri ,  Sivakumar Nadarajan

IPC: G01R31/28 ,  G01R31/26

CPC classification number: G01R31/2849 ,  G01R31/2642

Abstract: A method of monitoring health of a power semiconductor device includes: determining a steady state loading of the power semiconductor device; when it is determined that the power semiconductor device is under a steady state loading, monitoring a case temperature parameter relating to a temperature of the case of the power semiconductor device over a predetermined period, derive a normalised parameter from the monitored case temperature parameter and determine the health of the power semiconductor device based on the normalised parameter.