Title :
Magnetic processes in hysteresis motors equipped with melt-textured YBCO
Author :
Habisreuther, T. ; Strasser, T. ; Gawalek, W. ; Gornert, P. ; Ilushin, K.V. ; Kovalev, L.K.
Author_Institution :
Inst. fur Phys. Hochtechnologie e.V., Jena, Germany
fDate :
6/1/1997 12:00:00 AM
Abstract :
Several hysteresis motors have been constructed with an output power up to 500 W at T=77 K. The rotors of these machines consist of melt-textured YBCO. In this work, the authors present detailed investigations on the magnetic processes in these rotors. Spheres were cut from melt-textured YBCO and investigated by rotating in vector-VSM. From these measurements, torque moments on the sample, hysteretic losses and the slip between external field and the sample can be calculated. The same dependence of the output power on the magnetic field for the samples as for the constructed motors can be derived. Influences of the critical current density and the domain size can be separated by changing the temperature.
Keywords :
barium compounds; copper compounds; critical current density (superconductivity); high-temperature superconductors; hysteresis motors; machine testing; magnetic fields; rotors; superconducting machines; yttrium compounds; 500 W; 77 K; YBaCuO; YBaCuO HTSC; critical current density; domain size; hysteresis motors; hysteretic losses; magnetic field; magnetic processes; measurements; melt-texturing; output power; rotors; slip; torque moments; vector-VSM; Critical current density; Hysteresis motors; Loss measurement; Magnetic field measurement; Magnetic hysteresis; Magnetic separation; Power generation; Rotors; Torque measurement; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
