A real time measurement of junction temperature variation in high power IGBT modules for wind power converter application

Pramod Ghimire, Kristian Bonderup Pedersen, Angel Ruiz de Vega, Bjørn Rannestad, Stig Munk-Nielsen, Paul Bach Thøgersen

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

39 Citations (Scopus)

Abstract

This paper presents a real time measurement of on-state forward voltage and estimating the junction temperature for a high power IGBT module during a power converter operation. The power converter is realized as it can be used for a wind turbine system. The peak of the junction temperature is decreased at higher fundamental frequency due to change in on-state time from the change in output frequency. The junction temperature is estimated using the on-state collector-emitter voltage of the IGBT module. Lower output frequency is thermally a higher stressing zone for wind power converters, hence the low frequency range is considered from 6Hz to 20Hz; the corresponding on-state collector-emitter voltage and junction temperature are presented. The estimation of junction temperature is compared with finite element based thermal simulations. The peak temperatures at different frequencies are compared between measurement and simulation results. The measurement technique desinged to be implementable for field application.
Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Integrated Power Systems, CIPS 2014
Number of pages6
PublisherVDE Verlag GMBH
Publication dateFeb 2014
Pages1-6
Article number6776812
ISBN (Print)978-3-8007-3578-5
Publication statusPublished - Feb 2014
Event8th International Conference on Integrated Power Systems, CIPS 2014 - Nuremberg, Germany
Duration: 25 Feb 201427 Feb 2014

Conference

Conference8th International Conference on Integrated Power Systems, CIPS 2014
Country/TerritoryGermany
CityNuremberg
Period25/02/201427/02/2014

Keywords

  • IGBT power module
  • Junction temperature
  • Wind power converter
  • Reliability
  • Thermal simulation
  • On-state voltage monitoring

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