Dual-Input Soft-Switched DC-DC Converter with Isolated Current-Fed Half-Bridge and Voltage-Fed Full-Bridge for Fuel Cell or Photovoltaic Systems

Zhe Zhang, Ole Cornelius Thomsen, Michael A. E. Andersen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    This paper introduces a new zero-voltage-switching (ZVS) isolated DC-DC converter with two input ports which can
    be utilized in hybrid energy systems, for instance, in a fuel cell and super-capacitor system. By fully using two high frequency transformers, the proposed converter can effectively integrate a current-fed boost half-bridge (BHB) and a full-bridge (FB) into one equivalent circuit configuration which has dual-input ability and additionally it can reduce the number of the power devices. With the phase-shift control, it can achieve zero-voltage switching turn-on of active switches and zero-current switching (ZCS) turn-off of diodes leading to negligible reverse recovery loss. Voltage conversion ratio is higher compared to the conventional boost converter owing to the BHB circuit and the corresponding control. Finally, a 25~50 V input, 300~400 V output prototype with a 600 W nominal power rating are built up and tested to demonstrate the effectiveness of the proposed converter topology.
    Original languageEnglish
    Title of host publicationIEEE Applied Power Electronics Conference & Exhibition
    PublisherIEEE
    Publication date2013
    Pages2042-2047
    DOIs
    Publication statusPublished - 2013
    Event2013 28th Annual IEEE Applied Power Electronics Conference and Exposition - Long Beach Convention Center, Long Beach, United States
    Duration: 17 Mar 201321 Mar 2013
    Conference number: 28
    https://ieeexplore.ieee.org/xpl/conhome/6516132/proceeding

    Conference

    Conference2013 28th Annual IEEE Applied Power Electronics Conference and Exposition
    Number28
    LocationLong Beach Convention Center
    Country/TerritoryUnited States
    CityLong Beach
    Period17/03/201321/03/2013
    Internet address

    Keywords

    • Boost half-bridge (BHB)
    • DC converter
    • Phaseshift control
    • Soft-switched
    • Fuel cell
    • Hybrid

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