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Health-Monitoring of IGBT Power Modules using repetitive Half-sinusoidal Power Losses

Title data

Denk, Marco ; Bakran, Mark-M.:
Health-Monitoring of IGBT Power Modules using repetitive Half-sinusoidal Power Losses.
2016
Event: PCIM Europe 2016 , 10.-12.05.2016 , Nürnberg.
(Conference item: Conference , Poster )

Abstract in another language

n view of ever-increasing power densities and harsh operating conditions manufacturers of power electronic systems are demanding concepts to monitor the ageing process of IGBT power modules in the field. This paper presents a diagnostic concept to identify the thermal resistance from chip to substrate and to monitor its increase due to the gradual delamination of the IGBT chip-solder. For this purpose the IGBTs are operated with repetitive half-sinusoidal power losses and a modified gate driver measures the amplitude ∆TJ and the minimum temperature TJ,Min of the resulting junction temperature cycles. The focus of this paper is on the implementation of the diagnostic concept within a voltage source inverter of a hybrid transmission. It describes an inverter control strategy to realize the periodic heating current in a regular operating point and without generating any drive torque. Moreover, the additional increase of the temperature cycle amplitude ∆TJ due to the increased power losses at higher minimum cycle temperatures TJ,Min is investigated. The diagnostic concept is tested with artificially aged power modules and enables a very robust and selective identification of a delaminated chip-solder and a contaminated cooling system with little implementation effort.

Further data

Item Type: Conference item (Poster)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Mechatronics > Chair Mechatronics - Univ.-Prof. Dr.-Ing. Mark-M. Bakran
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Mechatronics
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Emerging Fields
Research Institutions
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 19 May 2016 11:17
Last Modified: 19 May 2016 11:17
URI: https://eref.uni-bayreuth.de/id/eprint/32405