IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v16y2023i9p3658-d1131616.html
   My bibliography  Save this article

Analytical Investigation of Magnetic Scalar Potentials Oscillation in Spoke PM Flux Modulation Machines

Author

Listed:
  • Lutf Ur Rahman

    (Electrical Engineering Department, Kunsan National University, Gunsan-si 573-701, Republic of Korea)

  • Abdur Rehman

    (Electrical Engineering Department, Kunsan National University, Gunsan-si 573-701, Republic of Korea)

  • Byungtaek Kim

    (Electrical Engineering Department, Kunsan National University, Gunsan-si 573-701, Republic of Korea)

Abstract

In this paper, the oscillation phenomena of the scalar magnetic potential of iron pieces of spoke permanent magnet (PM) machines are analyzed and the effects of the oscillation on the air gap flux and back electro-motive force (EMF) are deeply investigated, especially for flux modulation machines such as vernier and flux switching PM (FSPM) machines. To these ends, the formula of the scalar magnetic potential is derived for a generalized spoke PM structure. It reveals that the oscillation phenomena depend on the slot/pole combination, consequently resulting in different behavior according to the machine types such as vernier and FSPM machines. Next, each core’s potential given as a discrete function is developed into a continuous function of an air gap magneto-motive force (MMF) rotating and oscillating through Fourier series expansion. Making use of the developed MMF and the specific permeance of air gap, the equations of air gap flux density and back EMF are derived, which enable accurately estimating the suppression of the modulation flux and the back EMF due to the potential oscillation for different types of spoke PM machines. For validation, various magnetic characteristics are quantitatively examined for different type of spoke PM structures, including PM vernier and FSPM machines, and verified by comparing with FEM simulation results.

Suggested Citation

  • Lutf Ur Rahman & Abdur Rehman & Byungtaek Kim, 2023. "Analytical Investigation of Magnetic Scalar Potentials Oscillation in Spoke PM Flux Modulation Machines," Energies, MDPI, vol. 16(9), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:9:p:3658-:d:1131616
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/16/9/3658/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/16/9/3658/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Byungtaek Kim, 2017. "Investigation on Slot–Pole Combinations of a PM Vernier Motor with Fractional-Slot Concentrated Winding Configurations," Energies, MDPI, vol. 10(9), pages 1-11, September.
    2. Lutf Ur Rahman & Faisal Khan & Muhammad Afzal Khan & Naseer Ahmad & Hamid Ali Khan & Mohsin Shahzad & Siddique Ali & Hazrat Ali, 2019. "Modular Rotor Single Phase Field Excited Flux Switching Machine with Non-Overlapped Windings," Energies, MDPI, vol. 12(8), pages 1-27, April.
    3. Muhammad Azeem & Byungtaek Kim, 2019. "Electromagnetic Analysis and Performance Investigation of a Flux-Switching Permanent Magnet Machine," Energies, MDPI, vol. 12(17), pages 1-14, September.
    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. Andrzej Łebkowski, 2018. "Design, Analysis of the Location and Materials of Neodymium Magnets on the Torque and Power of In-Wheel External Rotor PMSM for Electric Vehicles," Energies, MDPI, vol. 11(9), pages 1-23, August.
    2. Himayat Ullah Jan & Faisal Khan & Basharat Ullah & Muhammad Qasim & Ahmad H. Milyani & Abdullah Ahmed Azhari, 2022. "Design and Thermal Analysis of Linear Hybrid Excited Flux Switching Machine Using Ferrite Magnets," Energies, MDPI, vol. 15(14), pages 1-18, July.
    3. Yujun Shi & Linni Jian, 2018. "A Novel Dual-Permanent-Magnet-Excited Machine with Flux Strengthening Effect for Low-Speed Large-Torque Applications," Energies, MDPI, vol. 11(1), pages 1-17, January.

    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:9:p:3658-:d:1131616. 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.