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Comparative Thermal and Demagnetization Analysis of the PM Machines with Neodymium and Ferrite Magnets

Author

Listed:
  • Oleksandr Dobzhanskyi

    (Department of Natural Sciences, Engineering, and Technology, Point Park University, Pittsburgh, PA 15222, USA)

  • Viktor Grebenikov

    (Institute of Electrodynamics, National Academy of Sciences of Ukraine, Pr. Peremohy, 56, 03057 Kyiv, Ukraine)

  • Rupert Gouws

    (School of Electrical, Electronic and Computer Engineering, North-West University, Potchefstroom 2520, South Africa)

  • Rostyslav Gamaliia

    (Institute of Electrodynamics, National Academy of Sciences of Ukraine, Pr. Peremohy, 56, 03057 Kyiv, Ukraine)

  • Eklas Hossain

    (Department of Electrical Engineering and Renewable Energy, Oregon Institute of Technology, Klamath Falls, OR 97601, USA)

Abstract

This paper provides computer analysis and experiential investigation of the permanent magnet machines with neodymium and ferrite permanent magnets to discuss the feasibility of utilizing induction machines-oriented equipment for PM machine production. For this purpose, the machines are obtained by replacing the squirrel-cage rotor of the induction motor with the flux-focusing (tangential) and surface-mounted (radial) permanent magnet rotors. Electromechanical parameters of the machines as electromagnetic torque and output power are discussed and compared. The temperatures of the neodymium and ferrite magnets are also calculated at rated current, and short circuit scenarios and the performance of two different cooling systems in minimizing the temperature effect on the machines are investigated. Furthermore, the demagnetization of permanent magnets at various load conditions is also studied. Finally, the results of the computer modeling are validated by the physical prototypes of the machines. The characteristics of the electrical machines under study were calculated using the Simcenter MagNet and Simcenter MotorSolve software packages.

Suggested Citation

  • Oleksandr Dobzhanskyi & Viktor Grebenikov & Rupert Gouws & Rostyslav Gamaliia & Eklas Hossain, 2022. "Comparative Thermal and Demagnetization Analysis of the PM Machines with Neodymium and Ferrite Magnets," Energies, MDPI, vol. 15(12), pages 1-15, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:12:p:4484-:d:843109
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