A Matching Transformer-less Inrush Current Suppressor for Transformers Using a Series: Connected Small-Rated Voltage-Source PWM Converter-Consideration of the Control Gains and Required-Ratings of the PWM Converter

Hiroaki Yamada, Shigeyuki Funabiki, Toshihiko Tanaka

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This paper proposes a new inrush current suppressor using a series-connected small-rated PWM converter for a transformer. The PWM converter is directly connected in series between the source and transformer without a matching transformer. The inrush phenomena of the matching transformer, thus, can be avoided. The control gain and required-ratings of the series-connected small-rated PWM converter is discussed in detail. The capacity of the dc capacitor of the PWM converter is also discussed considering the active power flows into the PWM converter. The PSCAD/EMTDC is used to verify the validity of the proposed inrush current suppressor. A prototype experimental model is constructed and tested. The experimental results demonstrate that the proposed suppressor can perfectly overcome the inrush phenomena of transformers.

    Original languageEnglish
    Pages (from-to)712-720
    Number of pages9
    Journalieej transactions on industry applications
    Volume125
    Issue number7
    DOIs
    Publication statusPublished - Sept 1 2005

    Keywords

    • inrush current
    • matching transformer-less
    • small-rated voltage-source PWM converter
    • transformer

    ASJC Scopus subject areas

    • Industrial and Manufacturing Engineering
    • Electrical and Electronic Engineering

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