Comparative study of a new structure of HTS-bulk axial flux-switching machine

Nima Arish, Fabrizio Marignetti, Mohammad Yazdani-Asrami

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A high-temperature superconducting (HTS) axial flux permanent magnet (AFPM) machine was designed, using superconducting bulks over the rotor surface and rare-earth magnets in the middle of the stator teeth. Because of diamagnetic behavior of the HTS bulks and zero field cooling, leakage flux significantly reduces in the proposed machine compared to the existing machine with mounting rare-earth magnets. Three-dimensional finite element (FE) modelling was used to validate the design performance. The magnetic flux distribution, induced electromotive force (EMF), inductance, PM flux, losses, total harmonic distribution and cogging torque are computed and compared in two structures. The results show that the proposed machine structure is more efficient than the existing one.
Original languageEnglish
Article number1353854
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Early online date14 Mar 2021
Publication statusPublished - 15 May 2021


  • axial flux permanent magnet machines
  • bulk superconductors
  • flux-switching machines
  • high temperature superconductors


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