IDEAS home Printed from https://ideas.repec.org/a/gam/jmathe/v11y2023i7p1735-d1116340.html
   My bibliography  Save this article

An In-Phase Unit Slot-Opening Shift Method for Cogging Torque Reduction in Interior Permanent Magnet Machine

Author

Listed:
  • Linwei Wang

    (School of Electrical Engineering, Chongqing University, Chongqing 400044, China)

  • Shuai Lu

    (School of Electrical Engineering, Chongqing University, Chongqing 400044, China)

  • Yangming Chen

    (School of Electrical Engineering, Chongqing University, Chongqing 400044, China)

  • Shiya Wang

    (School of Electrical Engineering, Chongqing University, Chongqing 400044, China)

Abstract

The cogging torque reduction methods in permanent magnet (PM) machines are more or less FEA trial and error-based and cause undesirable side effects, such as distorted back EMF, new harmonic components, and structure asymmetry. A slot-opening grouping method can address these issues. However, it needs to model all slots in FEA design validation during practical cogging torque optimization iterations, and also leads to back-EMF reduction. In this paper, a new grouping strategy, termed in-phase unit (IPU), is introduced, together with the slot-opening angle-shift method. The slot openings with the same cogging torque distribution pattern are grouped into an IPU, and the cogging torque peaks of the slot openings within an IPU can now be interleaved. Thereby, the major harmonic components of the cogging torque are cancelled out, instead of being summed up. The IPU grouping principle, the slot-opening shift angle computation, and the selection of the harmonic order to cancel are analyzed in detail. By comparison, the proposed method not only simplifies cogging torque optimization iterations by only modeling the slots in one IPU in FEA, but also compensates for the back-EMF constant reduction. The effectiveness of the proposed methods is validated by two typical interior PM machine design cases.

Suggested Citation

  • Linwei Wang & Shuai Lu & Yangming Chen & Shiya Wang, 2023. "An In-Phase Unit Slot-Opening Shift Method for Cogging Torque Reduction in Interior Permanent Magnet Machine," Mathematics, MDPI, vol. 11(7), pages 1-14, April.
    • Handle: RePEc:gam:jmathe:v:11:y:2023:i:7:p:1735-:d:1116340
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2227-7390/11/7/1735/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2227-7390/11/7/1735/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Massimo Caruso & Antonino Oscar Di Tommaso & Rosario Miceli & Fabio Viola, 2022. "A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination Geometry," Energies, MDPI, vol. 15(14), pages 1-19, July.
    2. Chunyu Qu & Ziqi Guo & Yongzhuang Hu & Xiuping Wang & Fangxu Han, 2022. "Multi-Objective Optimization Design of a New Permanent Magnet Synchronous Motor Based on the Taguchi Method," Energies, MDPI, vol. 15(19), pages 1-18, October.
    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.

      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:jmathe:v:11:y:2023:i:7:p:1735-:d:1116340. 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.