IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i15p5739-d882591.html
   My bibliography  Save this article

Double Impedance-Substitution Control of DFIG Based Wind Energy Conversion System

Author

Listed:
  • Yu Zhang

    (School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
    School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
    Harbin Electrical Machinery Company Limited, Harbin 150040, China)

  • Jiahong Liu

    (School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

  • Meilan Zhou

    (School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

  • Chen Li

    (School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

  • Yanling Lv

    (School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China)

Abstract

In a doubly-fed induction generator (DFIG)-based wind energy conversion system (WECS), when the grid voltage sags severely, the rotor side converter (RSC) suffers from overvoltage and overcurrent owing to the large electromotive force (EMF). To ensure that the converter operates within a safe range when grid faults occur, this paper proposes a double impedance-substitution control (DISC) strategy to improve the system’s low-voltage ride through (LVRT) capability. When the grid voltage sag is detected, the grid side converter (GSC) and RSC are connected in parallel to the rotor circuit by changing the topology of the system. In the new topology, GSC and RSC are equivalent to inductive impedance by controlling, which can not only suppress the overvoltage and overcurrent at the rotor side, but also effectively reduce the torque ripple. Additionally, the DISC strategy can provide reactive power support to the grid during LVRT. Finally, the simulation results show that the DISC strategy can maintain the current flowing through the RSC within ±1 p.u., and compared with the existing control strategy, the effectiveness of the proposed method was further demonstrated.

Suggested Citation

  • Yu Zhang & Jiahong Liu & Meilan Zhou & Chen Li & Yanling Lv, 2022. "Double Impedance-Substitution Control of DFIG Based Wind Energy Conversion System," Energies, MDPI, vol. 15(15), pages 1-19, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5739-:d:882591
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/15/5739/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/15/5739/
    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:15:y:2022:i:15:p:5739-:d:882591. 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.