IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2024i24p6253-d1541671.html
   My bibliography  Save this article

Research on Circulating Current Suppression Control of Parallel Inverters

Author

Listed:
  • Yibiao Fan

    (Physics, Mechanical and Electrical Engineering, Longyan University, Longyan 364012, China)

  • Lixia Tong

    (Institute for Testing of Industrial Products of Jiangxi General Institute of Testing and Certification, Nanchang 330052, China)

  • Xiaoping Wang

    (College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350011, China)

  • Xiaowei Cai

    (Physics, Mechanical and Electrical Engineering, Longyan University, Longyan 364012, China)

  • Zhihe Fu

    (Physics, Mechanical and Electrical Engineering, Longyan University, Longyan 364012, China)

  • Junhui Zhou

    (College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350011, China)

  • Shuangmao Huang

    (Tongce Technology Co., Ltd., Xiamen 364000, China)

  • Xingkui Mao

    (College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350011, China)

Abstract

Circulating current suppression can effectively improve the reliability and redundancy of parallel inverter systems. The mechanism and influencing factors of the low- and high-frequency zero-sequence circulating current (ZSCC) are analyzed in this study. Based on a mechanism analysis and the built mathematical model, the composite control strategy of zero-sequence voltage difference (ZSVD) compensation and virtual inductance is proposed to suppress the low- and high-frequency ZSCC. In the composite control strategy, the low-frequency ZCSS (LF-ZCSS) is suppressed by the ZSVD compensation method, and the HF-ZCSS is suppressed by the virtual inductance method. The ZSVD compensation is incorporated into the SVPWM as an input to regulate the modulation and suppress the LF-ZCSS, and virtual inductance is introduced into the current control loop to suppress the HF-ZCSS. A parallel system prototype composed of two 6 kW inverters is constructed. The experiments show that the ZSCC of the parallel system is reduced by 45%, which verifies the effectiveness of the proposed composite control strategy.

Suggested Citation

  • Yibiao Fan & Lixia Tong & Xiaoping Wang & Xiaowei Cai & Zhihe Fu & Junhui Zhou & Shuangmao Huang & Xingkui Mao, 2024. "Research on Circulating Current Suppression Control of Parallel Inverters," Energies, MDPI, vol. 17(24), pages 1-18, December.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:24:p:6253-:d:1541671
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/24/6253/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/17/24/6253/
    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:17:y:2024:i:24:p:6253-:d:1541671. 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.