Title :
Large current and low voltage switching devices using HTS thin film
Author :
Ikegami, T. ; Shingai, K. ; Yamagata, Y. ; Ebihara, K.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Kumamoto Univ., Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
A high temperature superconducting (HTS) thin film has a potential to control large currents using its transition between a superconducting state and a normal conducting state. In this paper an equivalent circuit model of a HTS thin film is presented to design a power conditioning circuit as an inverter which can handle large currents at voltages less than 1 V. Device model parameters of a HTS thin film were determined by comparing quenching characteristics calculated by a circuit simulation program (PSpice) with those measured experimentally. A temporal behavior of resistance of the HTS thin film quenched by a self-current which was simulated using the model were compared with experimental results. An inverter circuit using the HTS thin film switched thermally is designed and the characteristic of a switching operation with a photovoltaic cell is also shown.<>
Keywords :
SPICE; circuit analysis computing; electric current control; equivalent circuits; high-temperature superconductors; power conversion; quenching (thermal); solar cells; superconducting switches; superconducting thin films; PSpice; circuit simulation program; equivalent circuit model; high temperature superconducting thin film; large current switching devices; large currents control; low voltage switching devices; photovoltaic cell; power conditioning circuit; quenching characteristics; temporal resistance behavior; Circuit simulation; High temperature superconductors; Inverters; Low voltage; Superconducting thin films; Superconducting transition temperature; Switching circuits; Temperature control; Thin film circuits; Thin film devices;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
