Real-time temperature cycling estimation of IGBT power modules with power in-line measurements and compact thermal modeling

F. Di Napoli, A. Magnani, M. Coppola, P. Guerriero, V. D'Alessandro, L. Codecasa, P. Tricoli, S. Daliento

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The lifetime estimation of power converters is a crucial issue for the reliability of electrical generators with renewable sources. During normal operations, the switching devices show junction temperature cycles that are widely recognized as the main cause of their failures. Although in-line junction temperature monitoring is extremely difficult, its knowledge is essential in order to achieve a reliable power converter lifetime estimation. This work proposes an innovative real-time in-line monitoring strategy based on an accurate dynamic compact thermal model of the whole power module, capable of estimating the junction temperature from the measurement of the switching device dissipated powers. This model is suitable for FPGA implementation thus can be easily integrated in the control architecture of modern power converters. Experimental results on an IGBT power module demonstrate the reliability of the proposed method for lifetime estimation.

Original languageEnglish
Title of host publication5th IET International Conference on Renewable Power Generation (RPG) 2016
PublisherInstitution of Engineering and Technology
Volume2016
EditionCP694
ISBN (Electronic)978-1-78561-301-2
ISBN (Print)978-1-78561-300-5
DOIs
Publication statusPublished - 30 Jan 2017
Event5th IET International Conference on Renewable Power Generation, RPG 2016 - London, United Kingdom
Duration: 21 Sep 201623 Sep 2016

Conference

Conference5th IET International Conference on Renewable Power Generation, RPG 2016
Country/TerritoryUnited Kingdom
CityLondon
Period21/09/1623/09/16

Keywords

  • Dynamic Compact Thermal Modeling (DCTM)
  • Power converter failures
  • Power module
  • Real-time temperature estimation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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