IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i24p6631-d462743.html
   My bibliography  Save this article

Hybrid DC Converter with Current Sharing and Low Freewheeling Current Loss

Author

Listed:
  • Bor-Ren Lin

    (Department of Electrical Engineering, NYUST (National Yunlin University of Science and Technology), 123, Section 3, University Road, Yunlin 640, Taiwan)

  • Guan-Yi Wu

    (Department of Electrical Engineering, NYUST (National Yunlin University of Science and Technology), 123, Section 3, University Road, Yunlin 640, Taiwan)

Abstract

A new hybrid high-frequency link pulse-width modulation (PWM) converter using voltage balance capacitor and current balance magnetic coupling is proposed to realize low freewheeling current loss and wide load range of soft switching operation. Series-connected H-bridge converter is adopted for high voltage applications. In addition, a voltage balance capacitor and a current balance magnetic coupling core are employed for achieving voltage and current balance. To extend zero-voltage switching (ZVS) range of switches at lagging-leg of phase-shift PWM converter, soft switching LLC converter is linked to the lagging-leg of phase-shift PWM converter. Therefore, the wide ZVS load operation is realized in the presented hybrid converter. The other high freewheeling current disadvantage in conventional phase-shift PWM converter is improved by a snubber circuit used on low-voltage side. Thus, the primary current during the freewheeling state is decreased and close to zero. In addition, the conduction losses on primary-side components of studied converter are reduced. The secondary-sides of phase-shift PWM converter and LLC resonant converter are series-connected to achieve power transfer between input and output sides. Experimental results using a laboratory prototype are provided to demonstrate the effectiveness of the studied circuit and control algorithm.

Suggested Citation

  • Bor-Ren Lin & Guan-Yi Wu, 2020. "Hybrid DC Converter with Current Sharing and Low Freewheeling Current Loss," Energies, MDPI, vol. 13(24), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:24:p:6631-:d:462743
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/24/6631/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/24/6631/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:24:p:6631-:d:462743. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.