TY - JOUR
T1 - A fast operating magnetically controlled switch for 1 kA
AU - Mulder, G.B.J.
AU - ten Kate, H.H.J.
AU - Nijhuis, A.
AU - van de Klundert, L.J.M.
PY - 1985
Y1 - 1985
N2 - The power of fully superconducting rectifiers can be improved by increasing either the operating frequency or the transformer primary inductance [1]. The frequency is usually limited by the recovery time of thermally controlled switches. In order to achieve a higher switching speed, magnetically controlled switches are preferable [1,2]. This paper describes a magnetically controlled switch which can be used for currents up to 500 A at 25 Hz. The switch element, consisting of several Nb1%Zr multifilamentary superconductors, is placed between two concentric solenoids which generate the necessary magnetic field. The Nb1%Zr superconductor is well suited for this purpose because of its relatively low critical field (¿ 0.75 T) and high maximum current density (about 5.109A/m2below 0.3 T).
AB - The power of fully superconducting rectifiers can be improved by increasing either the operating frequency or the transformer primary inductance [1]. The frequency is usually limited by the recovery time of thermally controlled switches. In order to achieve a higher switching speed, magnetically controlled switches are preferable [1,2]. This paper describes a magnetically controlled switch which can be used for currents up to 500 A at 25 Hz. The switch element, consisting of several Nb1%Zr multifilamentary superconductors, is placed between two concentric solenoids which generate the necessary magnetic field. The Nb1%Zr superconductor is well suited for this purpose because of its relatively low critical field (¿ 0.75 T) and high maximum current density (about 5.109A/m2below 0.3 T).
U2 - 10.1109/TMAG.1985.1063814
DO - 10.1109/TMAG.1985.1063814
M3 - Article
VL - 21
SP - 686
EP - 689
JO - IEEE transactions on magnetics
JF - IEEE transactions on magnetics
SN - 0018-9464
IS - 2
ER -