Fundamental Study on Thermally-Controlled Superconducting Device for Synchronous Rectifier of Line Frequency

观察到超导电力电子器件（S-PED）的高速运行。所得结果揭示了“热控超导开关”用于整流器件的可能性。(1)研制出带换热器的S-PED。与无热交换器相比，加热和冷却效率提高了10%。(2)明确了加热器输入电压、脉宽、电阻的产生速度、最大产生电阻、恢复时间之间的关系。(3)如果S-PED两端的电压不大，则有可能在线频处发展整流。降低关断栅极能量需要进行研究和开发。利用这笔资金，对研制的S-PED进行了性能试验和加热器效率改进的准备工作。建立了生产改进装置的方法。

High speed operation of the superconducting power electronics device (S-PED) has been observed. Obtained results reveal the possibility of "Thermally-Controlled Superconducting Switch" for rectifying device.(1) S-PED with heat exchenger has been made. It improved 10% heater and cooling efficiency compaired with no heat exchenger.(2)The relationship between the heater inout voltage, the pulse width, the generation speed of the resistance the maximum generated resistance, and the recovery time have been cleared.(3) If the voltage across the S-PED is not large, there is a possibility to develop the rectifire at line frequency.The research and development are reqired to reduce the turn off gate energy. With this fund, the performance test of developed S-PED and the preparation of improvement for the heater efficiency have been performed. It is established the method to yield the improved device.