Modified Approach for the Rainflow Counting Analysis of Temperature Load Signals in Power Electronics Modules
Conference: CIPS 2024 - 13th International Conference on Integrated Power Electronics Systems
03/12/2024 - 03/14/2024 at Düsseldorf, Germany
Proceedings: ETG-Fb. 173: CIPS 2024
Pages: 7Language: englishTyp: PDF
Authors:
Letz, Sebastian A.; Zhao, Dawei; Leib, Juergen (Fraunhofer-Institute for Integrated Systems and Device Technology, Erlangen, Germany)
Eckardt, Bernd; Maerz, Martin (Fraunhofer-Institute for Integrated Systems and Device Technology, Erlangen, Germany & Friedrich-Alexander-Universität Erlangen-Nürnberg, Chair of Power Electronics, Nürnberg, Germany)
Abstract:
In this paper, a modified approach for the rainflow counting analysis (RCA) of temperature load signals in the lifetime and reliability estimation procedure of power electronics modules is proposed. Different temperature profiles, power cycling lifetime models and residue processing variants were investigated. It has been found that the results depend in all cases significantly on the selected residue processing method. It is shown further that this uncertainty can be almost excluded, when performing a convergence study over the load signal length to balance out the total residue weighting.