Patent ID: 11913986
Assignee: WUHAN UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 5:
6. The reliability evaluation method according to claim 2, wherein the step 3 comprises:
step 3.1 of using the monitoring value of the IGBT aging parameter to perform the segmented LSTM prediction to obtain the predicted aging process;
step 3.2 of categorizing threshold values of different aging stages according to an aging process curve;
step 3.3 of comparing a threshold value with monitored aging data, determining an aging stage of the IGBT in real time, and then selecting a corresponding aging correction coefficient; and
step 3.4 of updating a thermal network parameter of the electrothermal coupling model by the aging correction coefficient to ensure the accuracy of the junction temperature data.