Double Peltier Current Lead for Heat Leak Reduction at the Terminals for Superconducting Direct Current Applications

作者：Kawahara Toshio^*; Fujii Tomohiro; Emoto Masahiko; Hamabe Makoto; Watanabe Hirofumi; Sun Jian; Ivanov Yury; Yamaguchi Satarou

来源：IEEE Transactions on Applied Superconductivity, 2011, 21(3): 1070-1073.

DOI：10.1109/TASC.2010.2096451

• Cryogenics
• DC power transmission
• high-temperature superconductors
• Peltier current lead

For superconducting direct current applications, heat leak reduction at the terminal is a key issue for high performance systems and especially for small ones such as the distribution in internet data centers. We propose a double Peltier current lead (PCL), where the suitable combination of two Peltier modules can enhance the performance of PCL. Using the model parameters of actual thermoelectric materials, we estimated the heat leak on PCL using a thermal balance equation. At the double PCL, the large temperature difference on the current lead can be split to two thermoelectric materials and then the performance of PCL can be enhanced. As each of the thermoelectric materials has better working temperature range, an optimized combination of shape factors can be used for the high performance current lead at the terminals for superconducting application systems.

• 出版日期2011-6