TY - JOUR
T1 - Experimental results of thermally controlled superconducting switches for high frequency operation
AU - Mulder, G.B.J.
AU - ter Avest, D.
AU - ten Kate, H.H.J.
AU - Krooshoop, H.J.G.
AU - van de Klundert, L.J.M.
PY - 1987/9/1
Y1 - 1987/9/1
N2 - As part of a study to develop thermally controlled switches for use in superconducting rectifiers operating at a few hertz and 1 kA, a theoretical model is presented of the thermal behavior of such a switch. The calculations are compared with experimental results of several switches having recovery times between 40 and 200 ms. A discussion is given of the maximum temperature T/sub N/ that occurs in the normal regions when the switch is in the resistive state. Once T/sub N/ is known, it is possible to predict the recovery time, activation energy, stationary dissipation and minimum propagation current. The calculated and measured results, in good agreement, show that T/sub N/ is approximately 12 K and largely independent of the thickness or material of the insulation layer. Mention is made of some problems, related to the room-temperature equipment which drives the rectifier, that so far have prevented the rectifiers from being used at their design specifications.
AB - As part of a study to develop thermally controlled switches for use in superconducting rectifiers operating at a few hertz and 1 kA, a theoretical model is presented of the thermal behavior of such a switch. The calculations are compared with experimental results of several switches having recovery times between 40 and 200 ms. A discussion is given of the maximum temperature T/sub N/ that occurs in the normal regions when the switch is in the resistive state. Once T/sub N/ is known, it is possible to predict the recovery time, activation energy, stationary dissipation and minimum propagation current. The calculated and measured results, in good agreement, show that T/sub N/ is approximately 12 K and largely independent of the thickness or material of the insulation layer. Mention is made of some problems, related to the room-temperature equipment which drives the rectifier, that so far have prevented the rectifiers from being used at their design specifications.
U2 - 10.1109/20.11373
DO - 10.1109/20.11373
M3 - Article
SN - 0018-9464
VL - 24
SP - 907
EP - 910
JO - IEEE transactions on magnetics
JF - IEEE transactions on magnetics
IS - 2
ER -