High Voltage Gain Dual Active Bridge Converter with an Extended Operation Range for Renewable Energy Systems

Zhe Zhang, Kevin Tomas Manez, Yudi Xiao, Michael A. E. Andersen

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    Abstract

    Developing bidirectional dc-dc converters has become a critical research topic and gains more and more attention in recent years due to the extensive applications of smart grids with energy storages, hybrid and electrical vehicles and dc microgrids. In this paper, a Partial Parallel Dual Active Bridge (P2DAB) converter, i.e. low-voltage (LV) side parallel and high-voltage (HV) side series, is proposed to achieve high voltage gain and low current stress over switching devices and transformer windings. Given the unmodified P2DAB power stage, by regulating the phase-shift angle between the paralleled active bridges, the power equations and voltage gain are then modified, and therefore the operation range can be extended effectively. The operating principles of the proposed converter and its power characteristics under various operation modes are studied, and the design constraints are discussed. Finally, a laboratory prototype is constructed and tested. Both simulation and experimental results have verified the proposed topology’s operation and design.
    Original languageEnglish
    Title of host publicationProceedings of 2018 IEEE Applied Power Electronics Conference and Exposition
    Number of pages6
    PublisherIEEE
    Publication date2018
    DOIs
    Publication statusPublished - 2018
    Event2018 IEEE Applied Power Electronics Conference and Exposition - Henry B. Gonzalez Convention Center, San Antonio, United States
    Duration: 4 Mar 20188 Mar 2018
    https://ieeexplore.ieee.org/xpl/conhome/8336027/proceeding

    Conference

    Conference2018 IEEE Applied Power Electronics Conference and Exposition
    LocationHenry B. Gonzalez Convention Center
    Country/TerritoryUnited States
    CitySan Antonio
    Period04/03/201808/03/2018
    Internet address

    Keywords

    • Bidirectional
    • Converter
    • DAB
    • dc-dc
    • High voltage gain
    • Soft-switching

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