IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v330y2025ics0360544225025824.html
   My bibliography  Save this article

A three-level three-power-channel hybrid converter with wide voltage range for renewable energy medium voltage DC systems

Author

Listed:
  • Nie, Jianglin
  • Meng, Linghui
  • Zhang, Hengpeng
  • Yang, Jiangpeng
  • Wu, Jingchi
  • Ma, Lan
  • Shu, Zeliang

Abstract

This paper presents a novel three-level, three-power-channel hybrid DC/DC converter tailored for renewable energy-based medium-voltage DC (MVDC) systems. The proposed architecture integrates two LLC channels and one phase-shifted bridge (PSB) channel to simultaneously achieve wide output voltage range, high power transfer efficiency, and strong zero-voltage switching (ZVS) capability under fixed-frequency operation. Unlike traditional PSB converters that require large output filters, the inherent ripple suppression of the proposed topology eliminates the need for bulky inductors, improving power density. The LLC channels deliver the main power efficiently with full-range ZVS, while the PSB channel handles a minor portion of power to extend the voltage gain. Additionally, the converter significantly reduces voltage and power stress on the switches and resonant components. A 1 kW prototype was built and tested, demonstrating a wide output voltage range of 100–190 V and a peak efficiency of 96.7 %, validating the converter's effectiveness and practicality for MVDC systems.

Suggested Citation

  • Nie, Jianglin & Meng, Linghui & Zhang, Hengpeng & Yang, Jiangpeng & Wu, Jingchi & Ma, Lan & Shu, Zeliang, 2025. "A three-level three-power-channel hybrid converter with wide voltage range for renewable energy medium voltage DC systems," Energy, Elsevier, vol. 330(C).
    • Handle: RePEc:eee:energy:v:330:y:2025:i:c:s0360544225025824
    DOI: 10.1016/j.energy.2025.136940
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225025824
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.136940?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    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:eee:energy:v:330:y:2025:i:c:s0360544225025824. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    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.