IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v18y2025i7p1635-d1619701.html
   My bibliography  Save this article

A Parallel Dual LLC Resonant Converter with Wide Output Voltage Range for Energy System Applications

Author

Listed:
  • Chih-Chiang Hua

    (Department of Electrical Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan)

  • Jian-Bin Lai

    (Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology, Douliu 64002, Taiwan)

  • Wei-Cheng Hung

    (Department of Electrical Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan)

Abstract

This paper proposes a half-bridge parallel dual LLC resonant converter with wide output voltage range. The proposed converter uses a conventional parallel double half-bridge LLC resonant converter. On the primary side of the converter, only one of the two half bridges is used to control the two resonant loops. Due to the resonance of the converter, the active switches can achieve ZVS (zero-voltage switching), and the rectifier diode can also achieve ZCS (zero-current switching), and thus the switching loss is reduced. The current stress can be reduced and power can be distributed on both of the primary side and/or the secondary side. A voltage regulation circuit is designed on the secondary side to achieve the function of wide output voltage. The operation and analysis of the proposed converter are described in detail. The experiments were carried out on a circuit prototype, which is a converter with DC input voltage of 384 V and output voltage of 24–40 V and operating at a switching frequency of 107 kHz. The feasibility and performance of the proposed converter were verified by simulation and experimental results.

Suggested Citation

  • Chih-Chiang Hua & Jian-Bin Lai & Wei-Cheng Hung, 2025. "A Parallel Dual LLC Resonant Converter with Wide Output Voltage Range for Energy System Applications," Energies, MDPI, vol. 18(7), pages 1-16, March.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:7:p:1635-:d:1619701
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/18/7/1635/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/18/7/1635/
    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:18:y:2025:i:7:p:1635-:d:1619701. 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.