Investigation on the short-circuit behavior of an aged IGBT module through a 6 kA/1.1 kV non-destructive testing equipment

Rui Wu, Liudmila Smirnova, Francesco Iannuzzo, Huai Wang, Frede Blaabjerg

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    10 Scopus citations

    Abstract

    This paper describes the design and development of a 6 kA/1.1 kV non-destructive testing system, which aims for short circuit testing of high-power IGBT modules. An ultra-low stray inductance of 37 nH is achieved in the implementation of the tester. An 100 MHz FPGA supervising unit enables 10 ns level control accuracy of the short-circuit duration, protection triggering, and acquisition of the electrical waveforms. Moreover, a protection circuit avoids explosions in case of failure, making the post-failure analysis possible. A case study has been carried out on an aged 1.7 kV IGBT power module. The case study shows the current and voltage waveforms during short-circuit, as well as the current mismatch among six inner sections, which demonstrate the capability and the effectiveness of the proposed setup in the short-circuit aspect reliability studies of MW-scale power modules.

    Original languageBritish English
    Title of host publicationIECON Proceedings (Industrial Electronics Conference)
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages3367-3373
    Number of pages7
    ISBN (Electronic)9781479940325
    DOIs
    StatePublished - 24 Feb 2014

    Publication series

    NameIECON Proceedings (Industrial Electronics Conference)

    Keywords

    • Degradation
    • Insulated Gate Bipolar Transistor (IGBT)
    • Non-destructive testing (NDT)
    • Power module
    • Short-circuit

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