Experimental Characterization of a Conventional (Aluminum) and of a Superconducting (YBCO) Axial Flux Disc Motor

Inácio, David; Pina, J.; Luis, G; Martins, João; Ventim-Neves, M.; Álvarez, Alfredo

doi:10.1109/tasc.2010.2098832

Cited by 4 publications

(1 citation statement)

References 31 publications

(30 reference statements)

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“…The field in the HTS material depends on its magnetic history, exhibiting several magnetic excursion that defines the operation regimes of the motor: in the synchronous regime, the rotor is synchronous with the stator rotating magnetic field due to trapped flux; however, in the asynchronous regime the rotor's magnetic field slides over it and flux flow is present, leading to losses and, consequently, torque. For the asynchronous regime, the torque is given by (1) [5], and is maximum when the rotor is all magnetized. Since torque proportional to the losses in the HTS material, it is useful that as much HTS material as possible gets penetrated by flux in order to take advantage of the disc size.…”

Section: Introductionmentioning

confidence: 99%

Experimental Magnetic Field Mapping of a Polycrystalline Superconducting YBCO Disc for an Axial Flux Motor

Inácio

Pina

Ceballos

et al. 2015

IFIP Advances in Information and Communication Technology

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The method of creating large and complex-shaped melt-textured YBCO bulks based in artificial welding seeds opens the door to the study of applications with polycrystalline superconductor samples. In order to evaluate the superconducting quality of the bulks, Hall probe mapping can be applied in order to measure trapped flux field profiles after magnetisation. This paper describes the magnetic field mapping of an axial flux motor with a polycrystalline high temperature superconductor (YBCO) disc rotor at liquid nitrogen temperature (77 K). An axial flux hall probe is used and magnetic field profiles have been obtained for different polar configurations of a three-phase stator winding which will be operated at 50Hz. After the magnetization of the HTS disc trapped flux is measured, and its magnitude depends on the polar configuration and magnitude of the applied field.

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Section: Introductionmentioning

confidence: 99%