Verfahren zur Überwachung eines Degradationszustands einer Elektrischen Verschaltung in einer Leistungsmodulbaugruppe

Details

Veröffentlichungs-Nr.

EP4542247

Aktenzeichen

EP23306810

Anmeldetag

16. Oktober 2023

Veröffentlichung

4. März 2026

Erteilung

4. März 2026

Rechtsraum

EP

IPC

G01R31/40G01R31/70G01R31/42G01R1/20

Abstract

A process for monitoring a degradation state of an electrical interconnection (15) in a power module assembly (100), comprises capturing a detection signal that is sensitive to a reverse recovery current originating from a diode (14) of the power module assembly. The reverse recovery current is triggered by a turning-on switching operation of a switch (11) in a tested half-bridge branch (1) that comprises said diode, switch and interconnection. The invention process may be combined optionally with another monitoring process based on a turning-off switching operation of the switch, for monitoring a degradation state of another electrical interconnection within the same half-bridge branch. Complete interconnection monitoring for said half-bridge branch is thus possible.

Anmelder

Firmen

Mitsubishi Electric R&D Centre Europe B.V.
MITSUBISHI ELECTRIC CORPORATION

Land

🇳🇱 Niederlande

Fachgebiete