Practical considerations of the start-up procedure for an active capacitor

Haoran Wang, Qian Wang, Geng Tao, Huai Wang

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

    1 Scopus citations

    Abstract

    Capacitive DC links provide the only low-impedance current path connected with an input source during the start-up of many voltage source converters. A soft-start circuit is usually implemented to limit the inrush current. A two-terminal active capacitor is recently proposed which can directly replace conventional passive capacitors in DC links, with reduced cost or size for a given application. The active capacitor has the same level of convenience with two power terminals only as a passive capacitor. This paper proposes two start-up schemes for the active capacitor to overcome the drawbacks of existing methods previously widely used for passive capacitors. One scheme is based on a trade-off design between the start-up performance and the component sizing of the active capacitor. The other scheme is based on either an additional bypass switch together with the existing soft-start circuit in the DC bus or a start-up circuit fully integrated in the active capacitor. The theoretical analyses and experiments are presented. A case study on a single-phase full-bridge rectifier demonstrates the effectiveness of the implemented start-up schemes.

    Original languageBritish English
    Title of host publicationProceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages7953-7957
    Number of pages5
    ISBN (Electronic)9781538611272
    DOIs
    StatePublished - 15 Dec 2017
    Event43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017 - Beijing, China
    Duration: 29 Oct 20171 Nov 2017

    Publication series

    NameProceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
    Volume2017-January

    Conference

    Conference43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017
    Country/TerritoryChina
    CityBeijing
    Period29/10/171/11/17

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