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Yokeless Axial Flux Surface-Mounted Permanent Magnets Machine Rotor Parameters Influence on Torque and Back-Emf

Author

Listed:
  • Stanisław J. Hajnrych

    (Faculty of Electrical Engineering, Warsaw University of Technology, 00-661 Warsaw, Poland)

  • Rafał Jakubowski

    (Faculty of Electrical Engineering, Warsaw University of Technology, 00-661 Warsaw, Poland)

  • Jan Szczypior

    (Faculty of Electrical Engineering, Warsaw University of Technology, 00-661 Warsaw, Poland)

Abstract

The paper presents the results of a 3D FEA simulations series of a dual air gap Axial Flux (AF) electric machine with Surface-Mounted Permanent magnets (SPM) with parameterized rotor geometry. Pole number and pole span influence on back-emf, as well as cogging and ideal electromagnetic torques angular characteristics were investigated for each model with the common segmented yokeless stator with concentric windings. Synchronous and BLDC drives supply were used to estimate back-emf distortion. Ideal torque ripple and cogging torque spectra were analyzed. It was concluded that the number of poles closer to the number of slots with ~0.8 pole span tends to yield good torque density with the lowest cogging torque, back-emf distortion and ideal torque ripple.

Suggested Citation

  • Stanisław J. Hajnrych & Rafał Jakubowski & Jan Szczypior, 2020. "Yokeless Axial Flux Surface-Mounted Permanent Magnets Machine Rotor Parameters Influence on Torque and Back-Emf," Energies, MDPI, vol. 13(13), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:13:p:3418-:d:379573
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    References listed on IDEAS

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    1. Joya C. Kappatou & Georgios D. Zalokostas & Dimitrios A. Spyratos, 2017. "3-D FEM Analysis, Prototyping and Tests of an Axial Flux Permanent-Magnet Wind Generator," Energies, MDPI, vol. 10(9), pages 1-14, August.
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    Cited by:

    1. Changchuang Huang & Baoquan Kou & Xiaokun Zhao & Xu Niu & Lu Zhang, 2022. "Multi-Objective Optimization Design of a Stator Coreless Multidisc Axial Flux Permanent Magnet Motor," Energies, MDPI, vol. 15(13), pages 1-13, June.
    2. Krzysztof Szabat & Tomasz Pajchrowski & Tomasz Tarczewski, 2021. "Modern Electrical Drives: Trends, Problems, and Challenges," Energies, MDPI, vol. 15(1), pages 1-4, December.
    3. Andrea Credo & Marco Tursini & Marco Villani & Claudia Di Lodovico & Michele Orlando & Federico Frattari, 2021. "Axial Flux PM In-Wheel Motor for Electric Vehicles: 3D Multiphysics Analysis," Energies, MDPI, vol. 14(8), pages 1-18, April.

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