Lifetime estimation of DC-link capacitors in a single-phase converter with an integrated active power decoupling module

Siyuan Ma, Haoran Wang, Junchaojie Tang, Guorong Zhu, Huai Wang

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

    5 Scopus citations

    Abstract

    In single-phase inverters, DC-link capacitors are installed at the DC-link to buffer the ripple power between the AC side and DC side. Active decoupling methods introduce additional circuits at the DC side or AC side to partially or fully supply the ripple power. So that the demanded DC-link capacitor capacitance can be decreased. However, few research is about the effect of DC side and AC side decoupling on the DC-link capacitor reliability considering its electro-thermal stresses. This paper presents a quantitative analysis on the lifetime of capacitors with power decoupling circuits at the DC side and AC side, respectively. The ripple current spectrum of the capacitors is obtained by double Fourier analysis of a H-bridge inverter with natural sampling PWM modulation. A study case is demonstrated by a 2,000 W H-bridge inverter with 400 V DC-link voltage.

    Original languageBritish English
    Title of host publicationProceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society
    PublisherIEEE Computer Society
    Pages6824-6829
    Number of pages6
    ISBN (Electronic)9781509034741
    DOIs
    StatePublished - 21 Dec 2016
    Event42nd Conference of the Industrial Electronics Society, IECON 2016 - Florence, Italy
    Duration: 24 Oct 201627 Oct 2016

    Publication series

    NameIECON Proceedings (Industrial Electronics Conference)

    Conference

    Conference42nd Conference of the Industrial Electronics Society, IECON 2016
    Country/TerritoryItaly
    CityFlorence
    Period24/10/1627/10/16

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