Resonant Push-pull Converter with Flyback Regulator for MHz High Step-Up Power Conversion

Chang Wang, Mingxiao Li, Ziwei Ouyang, Gang Wang

    Research output: Contribution to journalJournal articleResearchpeer-review

    1165 Downloads (Pure)

    Abstract

    With the trend towards achieving high efficiency, high power density and high operating frequency in power converters, a new circuit architecture is proposed in this paper for high step-up photovoltaic applications. This converter consists of a current-fed resonant push-pull converter (PP) as a DC transformer (DCX) dealing with most of power with high efficiency and an active clamp flyback converter (ACF) as a regulator within a large conversion range. As a single stage converter, the ACF regulator is paralleled with PP converter to share the total power and regulates the high output voltage. An experimental prototype with an input voltage range of 24 V—32 V and output 400 V/400 W is built under 1 MHz switching frequency. A peak efficiency of 97.1% and a power density of 210 W/in3 (or 13 W/cm3) are achieved. Experimental result validates the correctness of the analysis and proves the feasibility of the proposed converter for MHz high step-up DC-DC conversion.
    Original languageEnglish
    JournalIEEE Transactions on Industrial Electronics
    Volume68
    Issue number2
    Pages (from-to)1178 - 1187
    ISSN0278-0046
    DOIs
    Publication statusPublished - 2020

    Keywords

    • Current-fed resonant push-pull
    • Active clamp flyback
    • High step-up dc-dc converter
    • Wide inputvoltage range
    • MHz
    • High efficiency
    • High power density

    Fingerprint

    Dive into the research topics of 'Resonant Push-pull Converter with Flyback Regulator for MHz High Step-Up Power Conversion'. Together they form a unique fingerprint.

    Cite this