IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2024i11p2684-d1406648.html
   My bibliography  Save this article

A Practical Superconducting DC Dynamo for Charging Conduction-Cooled HTS Magnet

Author

Listed:
  • Yujia Zhai

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China
    Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China)

  • Chunran Mu

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China)

  • Jinduo Wang

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China)

  • Litong Zhu

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China)

  • Tingkun Weng

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China)

  • Zhuo Li

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China)

  • Xingzheng Wu

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China)

  • Liufei Shen

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    Engineering Research Center of Power Transmission and Transformation Technology, Ministry of Education, Changsha 410082, China)

  • Jianhua Liu

    (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China)

  • Qiuliang Wang

    (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China)

Abstract

At present, HTS magnets cannot operate in the real closed-loop persistent current mode due to the existence of joint resistance, flux creep, and AC loss of the HTS tape. Instead of using a current source, HTS flux pumps are capable of injecting flux into closed HTS magnets without electrical contact. This paper presents a practical superconducting DC dynamo for charging a conduction-cooled HTS magnet system based on a flux-pumping technique. To minimize heat losses, the rotor is driven by a servo motor mounted outside the vacuum dewar by utilizing magnetic fluid dynamic sealing. Different parameters, such as air gap and rotating speed, have been tested to investigate the best pumping effect, and finally, it successfully powers a 27.3 mH HTS non-insulated double-pancake coil to the current of 54.2 A within 76 min. As a low-cost and compact substitute for the traditional current source, the realization of a contactless DC power supply can significantly improve the flexibility and mobility of the HTS magnet system and could be of great significance for the technological innovation of future HTS magnets used in offshore wind turbines, biomedical, aerospace, etc.

Suggested Citation

  • Yujia Zhai & Chunran Mu & Jinduo Wang & Litong Zhu & Tingkun Weng & Zhuo Li & Xingzheng Wu & Liufei Shen & Jianhua Liu & Qiuliang Wang, 2024. "A Practical Superconducting DC Dynamo for Charging Conduction-Cooled HTS Magnet," Energies, MDPI, vol. 17(11), pages 1-12, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:11:p:2684-:d:1406648
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/11/2684/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/17/11/2684/
    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:11:p:2684-:d:1406648. 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.