Evidence of Gate Voltage Oscillations during Short Circuit of Commercial 1.7 kV/ 1 kA IGBT Power Modules

Paula Diaz Reigosa, Rui Wu, Francesco Iannuzzo, Frede Blaabjerg

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

10 Citations (Scopus)
51 Downloads (Pure)

Abstract

This paper analyzes the evidence of critical gate voltage oscillations in 1.7 kV/1 kA Insulated-Gate Bipolar Transistor (IGBT) power modules under short circuit conditions. A 6 kA/1.1 kV Non-Destructive Test (NDT) set up for repeatable short circuit tests has been built with a 40 nH stray inductance. A large amount of measurements have been acquired on commercial IGBT modules evidencing gate voltage oscillations under short circuit conditions. To tackle this problem, similar tests have been performed on a modified version of the same modules with two parallel sections and one single section. Mutual oscillations between two parallel sections have been evidenced, whereas single section configuration does not exhibit such instability. According to the experimental observations, it can be concluded that these oscillations are initiated by the paralleling of IGBT chips and sustained by a positive feedback involving the stray impedances of the module itself.
Original languageEnglish
Title of host publicationProceedings of PCIM Europe 2015; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
Number of pages8
PublisherVDE Verlag GMBH
Publication dateMay 2015
Pages916-923
ISBN (Print)978-3-8007-3924-0
Publication statusPublished - May 2015
EventPCIM Europe 2015; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management - Nuremberg, Germany
Duration: 19 May 201520 May 2015

Conference

ConferencePCIM Europe 2015; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
CountryGermany
CityNuremberg
Period19/05/201520/05/2015

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