IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v16y2023i15p5826-d1211543.html
   My bibliography  Save this article

Eddy Current Braking Force Analysis of a Water-Cooled Ironless Linear Permanent Magnet Synchronous Motor

Author

Listed:
  • Mengyao Wang

    (Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China)

  • Lu Zhang

    (Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China)

  • Kai Yang

    (Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China)

  • Junjie Xu

    (Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China)

  • Chunyu Du

    (Department of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China)

Abstract

The ironless linear permanent magnet synchronous motor (ILPMSM) is highly compact, easy to control, and exhibits minimal thrust fluctuations, making it an ideal choice for direct loading applications requiring precise positioning accuracy in linear motor test rigs. To address the issue of temperature rise resulting from increased primary winding current and to simultaneously enhance thrust density while minimizing thrust fluctuations, this paper introduces a bilateral-type ILPMSM with a cooling water jacket integrated between the dual-layer windings of the primary movers. The primary winding of the motor adopts a dual-layer coreless structure where the upper and lower windings are closely spaced and cooled by a non-conductive metal cooling water jacket, while the dual-sided secondary employs a Halbach permanent magnet array. The motor’s overall braking force is a combination of the electromagnetic braking force generated by the energized windings and the eddy current braking force induced on the cooling water jacket. This paper specifically focuses on the analysis of the eddy current braking force. Initially, the motor’s geometry and working principle are presented. Subsequently, the equivalent magnetization intensity method is employed to determine the no-load air gap magnetic density resulting from the Halbach array. An analytical model is then developed to derive expressions for the eddy current density and braking force induced in the water-cooling jacket. The accuracy of the analytical method is validated through finite element analysis. Then, a comparative analysis of the braking forces in two primary cooling structures, namely the inter-cooled type and the two-side cooled type ILPMSM, is conducted. Moreover, the characteristics of the eddy current braking force are thoroughly examined concerning motor size parameters and operating conditions. This paper provides a solid theoretical foundation for the subsequent optimization design of the proposed motor.

Suggested Citation

  • Mengyao Wang & Lu Zhang & Kai Yang & Junjie Xu & Chunyu Du, 2023. "Eddy Current Braking Force Analysis of a Water-Cooled Ironless Linear Permanent Magnet Synchronous Motor," Energies, MDPI, vol. 16(15), pages 1-16, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5826-:d:1211543
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/16/15/5826/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/16/15/5826/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Xinmei Wang & Yifei Wang & Tao Wu, 2022. "The Review of Electromagnetic Field Modeling Methods for Permanent-Magnet Linear Motors," Energies, MDPI, vol. 15(10), pages 1-18, May.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Li, Jian & Zuo, Zhengxing & Jia, Boru & Feng, Huihua & Mei, Bingang & Smallbone, Andrew & Roskilly, Anthony Paul, 2024. "Operating characteristics and design parameter optimization of permanent magnet linear generator applied to free-piston energy converter," Energy, Elsevier, vol. 287(C).

    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:16:y:2023:i:15:p:5826-:d:1211543. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.