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Forces in Axial Flux Magnetic Gears with Integer and Fractional Gear Ratios

Author

Listed:
  • Janusz Kołodziej

    (The Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, 45-758 Opole, Poland)

  • Marcin Kowol

    (The Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, 45-758 Opole, Poland)

  • Piotr Mynarek

    (The Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, 45-758 Opole, Poland)

  • Rafał Gabor

    (The Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, 45-758 Opole, Poland)

  • Marian Łukaniszyn

    (The Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, 45-758 Opole, Poland)

Abstract

This paper presents a comparison of two variants of an axial flux magnetic gear (AFMG), namely, with integer and fractional gear ratios. Based on calculations derived with the use of three-dimensional numerical models, the torque characteristics of the analyzed AFMGs are computed and verified on a physical model. The greatest emphasis is put on the detailed decomposition and analysis of local forces in modulator pole pieces (also used in the structural analysis) within the no-load and maximal load conditions. The authors also describe the unbalanced magnetic forces (UMF) in the axial and radial directions resulting from the construction of the considered AFMGs variants, and their possible effects in the context of the use of additive manufacturing (AM) in prototypes. The paper also proposes an effective method for limiting the axial strain by using the asymmetry of the air gaps, which slightly reduces the torque transmitted by AFMGs. Finally, a static strength analysis was presented that allows us to assess the effects of local forces in the form of modulator disc deformation for selected cases of air gap asymmetry.

Suggested Citation

  • Janusz Kołodziej & Marcin Kowol & Piotr Mynarek & Rafał Gabor & Marian Łukaniszyn, 2021. "Forces in Axial Flux Magnetic Gears with Integer and Fractional Gear Ratios," Energies, MDPI, vol. 14(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:855-:d:494759
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    References listed on IDEAS

    as
    1. Marcin Kowol & Janusz Kołodziej & Rafał Gabor & Marian Łukaniszyn & Mariusz Jagieła, 2020. "On-Load Characteristics of Local and Global Forces in Co-Axial Magnetic Gear with Reference to Additively Manufactured Parts of Modulator," Energies, MDPI, vol. 13(12), pages 1-18, June.
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    Citations

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    Cited by:

    1. Valentin Mateev & Miglenna Todorova & Iliana Marinova, 2023. "Design Aspects of Conical Coaxial Magnetic Gears," Energies, MDPI, vol. 16(10), pages 1-16, May.
    2. Lukasz Macyszyn & Cezary Jedryczka & Adam Myszkowski, 2021. "Simulation and Experimental Investigation of a Two-Stage Magnetic Precession Gear," Energies, MDPI, vol. 14(7), pages 1-16, March.
    3. Lukasz Macyszyn & Cezary Jedryczka & Michal Mysinski, 2023. "Analysis of a Two-Stage Magnetic Precession Gear Dynamics," Energies, MDPI, vol. 16(11), pages 1-13, June.

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