Capacitor Condition Monitoring for Modular Multilevel Converter Based on Charging Transient Voltage Analysis

Hongjian Xia, Yi Zhang, Minyou Chen, Wei Lai, Dan Luo, Huai Wang

    Research output: Contribution to journalArticlepeer-review

    10 Scopus citations

    Abstract

    This article proposes a capacitor condition monitoring (CM) method for modular multilevel converter (MMC) in motor drive applications. The proposed method is based on wavelet decomposition of transient voltage signals, which is independent of modulation schemes and control strategies. The equivalent series resistance (ESR) change can be detected with a moderate computation requirement. Both simulation and experimental results have verified the performance of the proposed method.

    Original languageBritish English
    Pages (from-to)3847-3856
    Number of pages10
    JournalIEEE Transactions on Power Electronics
    Volume38
    Issue number3
    DOIs
    StatePublished - 1 Mar 2023

    Keywords

    • Capacitor
    • condition monitoring (CM)
    • modular multilevel converter (MMC)
    • transient voltage analysis
    • wavelet

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