Title :
Fabrication and Characteristics of HTS Induction Motor by the Use of Bi-2223/Ag Squirrel-Cage Rotor
Author :
Nakamura, Taketsune ; Miyake, Hironori ; Ogama, Yoshio ; Morita, Gaku ; Muta, Itsuya ; Hoshino, Tsutomu
Author_Institution :
Kyoto Univ.
fDate :
6/1/2006 12:00:00 AM
Abstract :
HTS squirrel-cage induction motor was fabricated and tested in this study. Both of rotor bars and end rings were made of Bi-2223/Ag multifilamentary tapes in order to realize superconducting current loops, and the conventional (normal conducting) stator, 3-phase and 4-pole, was utilized. Rotating characteristics of the fabricated motor were tested for different input voltages at 60 Hz. The performances were also analyzed by means of the theoretical method based on the electrical equivalent circuit. It was shown that the minimum starting voltage was experimentally confirmed and agreed semi-quantitatively with the analysis result. The rotation at synchronous speed was realized by applying the load, at least, 1.5 Nm
Keywords :
bismuth compounds; calcium compounds; equivalent circuits; high-temperature superconductors; machine testing; multifilamentary superconductors; rotors; silver; squirrel cage motors; strontium compounds; superconducting device testing; superconducting machines; 60 Hz; Bi-2223-Ag squirrel-cage rotor; Bi2-xPbxSr2Ca2Cu 3O10-Ag; HTS induction motor fabrication; electrical equivalent circuit; end ring; motor testing; multi-filamentary tape; superconducting current loop; synchronous speed; Bars; Circuit testing; Fabrication; High temperature superconductors; Induction motors; Multifilamentary superconductors; Rotors; Stators; Superconducting films; Voltage; Bi-2223/Ag multifilamentary tape; induction motor; minimum starting voltage; persistent current mode; synchronous torque;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.864293
