A condition-monitoring method of DC-link capacitors used in a high-power three-phase PWM inverter with an evaluation circuit

Kazunori Hasegawa, Shin ichi Nishizawa, Ichiro Omura

    研究成果: ジャーナルへの寄稿学術誌査読

    9 被引用数 (Scopus)

    抄録

    This paper presents a condition-monitoring method of dc-link capacitors used in a high-power three-phase PWM inverter with an evaluation circuit intended for ageing tests. Although its power rating is 1/25 of the inverter, the evaluation circuit provides the equivalent ripple current waveform and dc-bias voltage to the high-power inverter. The monitoring method independently extracts the capacitance and ESR of the dc-link capacitor, where the fast Fourier transform is introduced to the ripple current waveform and the dc-link voltage of the evaluation circuit. Experimental results verify that the monitoring method obtains both the ESR and capacitance changes of a capacitor under test.

    本文言語英語
    ページ(範囲)480-487
    ページ数8
    ジャーナルIEEJ Journal of Industry Applications
    8
    3
    DOI
    出版ステータス出版済み - 2019

    !!!All Science Journal Classification (ASJC) codes

    • 自動車工学
    • エネルギー工学および電力技術
    • 機械工学
    • 産業および生産工学
    • 電子工学および電気工学

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