Mission profile based sizing of IGBT chip area for PV inverter applications

Yanfeng Shen, Huai Wang, Yongheng Yang, Paula Diaz Reigosa, Frede Blaabjerg

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

    21 Scopus citations

    Abstract

    Maximizing the total energy generation is of importance for Photovoltaic (PV) plants. This paper proposes a method to optimize the IGBT chip area for PV inverters to minimize the annual energy loss of the active switches based on long-term operation conditions (i.e., mission profile). The design process is firstly introduced. Then the power loss, thermal characteristic and lifetime for IGBT modules with different chip areas are modeled. After that, the dependence of the annual energy loss and maximum junction temperature on the IGBT chip area and switching frequency is derived under a specific yearly mission profile. Simulation results are given to verify the thermal characteristics. Furthermore, a Monte Carlo based lifetime evaluation is presented to check the IGBT reliability. The proposed design method enables a reliability-oriented energy optimized sizing of active switches for PV inverter applications, which otherwise cannot be achieved by taking into account the power efficiency at rated condition or the weighted power efficiency at several loading levels only.

    Original languageBritish English
    Title of host publication2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2016
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781467386166
    DOIs
    StatePublished - 29 Jul 2016
    Event7th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2016 - Vancouver, Canada
    Duration: 27 Jun 201630 Jun 2016

    Publication series

    Name2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2016

    Conference

    Conference7th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2016
    Country/TerritoryCanada
    CityVancouver
    Period27/06/1630/06/16

    Keywords

    • annual energy loss
    • IGBT sizing
    • inverter
    • reliability

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