Lagrange-Multiplier-Based Control Method to Optimize Efficiency for Four-Switch Buck-Boost Converter over Whole Operating Range

Jianquan Liao, Guanqun Qiu, Yuansheng Huang, Vinod Khadkikar

    Research output: Contribution to journalArticlepeer-review

    4 Scopus citations

    Abstract

    Four-mode modulation (FMM) method is the most advanced for four-switch buck-boost converter among existing control strategies. But its efficiency is still not optimal. In this article, all FMM methods are analyzed, and the minimum inductor current root mean square value of each FMM method is obtained via the generalized Lagrange multiplier method. Under this circumstance, the optimal FMM methods are selected to form a control method that improves operating efficiency over the whole operating range. Experimental results and comparison with state-of-the-art methods demonstrate the effectiveness and superiority of proposed method.

    Original languageBritish English
    Pages (from-to)822-833
    Number of pages12
    JournalIEEE Transactions on Industrial Electronics
    Volume71
    Issue number1
    DOIs
    StatePublished - 1 Jan 2024

    Keywords

    • Four-mode modulation (FMM)
    • four-switch buck-boost (FSBB) converter
    • minimum root mean square (rms) inductor current
    • soft-switching
    • zero-voltage switch (ZVS)

    Fingerprint

    Dive into the research topics of 'Lagrange-Multiplier-Based Control Method to Optimize Efficiency for Four-Switch Buck-Boost Converter over Whole Operating Range'. Together they form a unique fingerprint.

    Cite this