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Comparison of UCE- and RGi-based Junction Temperature Measurement of Multichip IGBT Power Modules

Titelangaben

Denk, Marco ; Bakran, Mark-M.:
Comparison of UCE- and RGi-based Junction Temperature Measurement of Multichip IGBT Power Modules.
2015
Veranstaltung: 17th Conference on Power Electronics and Applications. EPE’15-ECCE Europe , 08.-10.09.2015 , Genf, Schweiz.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung , Vortrag )

Abstract

The internal gate resistor RGi of an IGBT power module is the most promising temperature sensitive electrical parameter for real-time junction temperature measurement in a working voltage source inverter. This paper investigates RGi–based junction temperature measurement and compares it with the widespread UCE-method that is used for device characterization in laboratory setups. It is found that both methods have similar averaging properties when measuring the junction temperature of paralleled IGBT single chips. However, in case of a centered internal gate resistor the RGi-method measures a higher temperature than the area-averaging UCE-method. Especially at steep lateral temperature pro-files the RGi-measured temperature is closer to the chip peak temperature than the UCE-measured one. This deviation is investigated in thermal equilibrium and during the cooling down process using ther-mal impedance measurement, an IR-camera and a finite element simulation.

Weitere Angaben

Publikationsform: Veranstaltungsbeitrag (Vortrag)
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mechatronik > Lehrstuhl Mechatronik - Univ.-Prof. Dr.-Ing. Mark-M. Bakran
Profilfelder > Emerging Fields > Energieforschung und Energietechnologie
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mechatronik
Profilfelder
Profilfelder > Emerging Fields
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 12 Okt 2015 07:20
Letzte Änderung: 12 Okt 2015 07:20
URI: https://eref.uni-bayreuth.de/id/eprint/20145