Disk-shaped Superconducting rotor under a rotating magnetic field: speed dependence

Author

Álvarez, Alfredo ; Suárez, Pilar ; Cáceres, Dolores ; Cordero, Eduardo ; Ceballos, José-María ; Pérez, Belén

Author_Institution

Univ. of Extremadura, Badajoz, Spain

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

2174

Lastpage

2177

Abstract

As part of the design of small axial-flux induction motors using disk-shaped rotors made from YBCO bulks, in previous work we studied the behavior of such disks under a rotating 2-pole magnetic field and gave an explanation of the results. That work yields information on such internal parameters as pinning forces and pull-out torque, and good estimates of the damping and Magnus coefficients. As in conventional motors, one expects to find dependence of these parameters on the magnetic field speed-the synchronous speed. In the present work, this dependence is studied and the previous model is improved.

Keywords

electromagnetic induction; flux pinning; induction motors; rotors; superconducting machines; Magnus coefficients; YBCO bulks; axial-flux induction motors; damping; disk-shaped superconducting rotor; internal parameters; magnetic field speed; pinning forces; pull-out torque; rotating magnetic field; superconducting rotating machines; synchronous speed; High temperature superconductors; Magnetic fields; Rotors; Stator cores; Superconducting magnets; Synchronous motors; Testing; Torque measurement; Velocity measurement; Yttrium barium copper oxide; Pull-out torque; YBCO bulks; superconducting rotating machines;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.849605

Filename

1440094