IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v18y2025i2p400-d1569624.html
   My bibliography  Save this article

Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching

Author

Listed:
  • Jialin Zhang

    (School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    China Power NARI Purui Engineering Co., Ltd., Beijing 102299, China
    NARI Group Corporation, Nanjing 211106, China)

  • Kunpeng Zha

    (NARI Group Corporation, Nanjing 211106, China)

  • Xiaojun Tang

    (School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Yuefeng Yang

    (China Power NARI Purui Engineering Co., Ltd., Beijing 102299, China
    NARI Group Corporation, Nanjing 211106, China)

  • Lanfang Li

    (China Power NARI Purui Engineering Co., Ltd., Beijing 102299, China
    NARI Group Corporation, Nanjing 211106, China)

  • Jiafei Li

    (China Power NARI Purui Engineering Co., Ltd., Beijing 102299, China
    NARI Group Corporation, Nanjing 211106, China)

Abstract

Multi-port DC power electronic transformer (PET) is a core equipment for achieving transformation of different voltage levels and flexible interconnection of different DC buses in a DC distribution system. It is capable of bidirectional energy flow, flexible regulation of power flow, port fault isolation, and other functions. A new five-port DC transformer topology based on soft switching technology is proposed in this paper. In this topology, different DC voltage levels can be interconnected efficiently, such as 20 kV, 750 V, ±375 V, and 300 to 500 V adjustable. The control of each port is simple and flexible. The output voltage is stable, and they are independent of each other, which can improve the system reliability. The topology of the proposed multi-port DC transformer is introduced in detail. The working principle, control strategy, and parameter design method of the transformer are analyzed. Simulations and experimental results are provided to validate the theoretical analysis.

Suggested Citation

  • Jialin Zhang & Kunpeng Zha & Xiaojun Tang & Yuefeng Yang & Lanfang Li & Jiafei Li, 2025. "Topology and Control Strategy of Multi-Port DC Power Electronic Transformer Based on Soft Switching," Energies, MDPI, vol. 18(2), pages 1-18, January.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:2:p:400-:d:1569624
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/18/2/400/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/18/2/400/
    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:2:p:400-:d:1569624. 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.