An online Vce measurement and temperature estimation method for high power IGBT module in normal PWM operation

Pramod Ghimire, Angel Ruiz de Vega, Szymon Beczkowski, Stig Munk-Nielsen, Bjørn Rannested, Paul Bach Thøgersen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

14 Citations (Scopus)

Abstract

An on-state collector-emitter voltage (Vce) measurement and thereby an estimation of average temperature in space for high power IGBT module is presented while power converter is in operation. The proposed measurement circuit is able to measure both high and low side IGBT and anti parallel diode voltages for a half bridge module which are also used to monitor the electrical degradation of the module. The Vce load current is proposed to estimate the variation of average temperature in space at every fundamental cycle of sinusoidal loading current. Initially, the calibration of voltage and junction temperature for load current level is presented and a trend of change in calibration factor for the IGBT is presented. Finally, the variation in temperature for sinusoidal variation of current is presented at initial stage and after an ageing of the IGBT. The measurement technique is simple and easy to implement into a gate driver for field applications.
Original languageEnglish
Title of host publicationProceedings of the International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA)
Number of pages6
PublisherIEEE Press
Publication date2014
Pages2850-2855
ISBN (Print)9781479927067
ISBN (Electronic)9781479927043
DOIs
Publication statusPublished - 2014
Event2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA) - Hiroshima, Japan
Duration: 18 May 201421 May 2014

Conference

Conference2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA)
Country/TerritoryJapan
CityHiroshima
Period18/05/201421/05/2014
SeriesInternational Conference on Power Electronics
ISSN2150-6078

Keywords

  • IGBT power module
  • Junction temperature
  • Real time monitoring
  • Relillbility

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