naa a22 4500 510801560 CHVBK 20180411083357.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-012-2419-5 doi (NATIONALLICENCE)springer-10.1007/s11664-012-2419-5 Development of a Peltier Current Lead for the 200-m-Class Superconducting Direct Current Transmission and Distribution System [Elektronische Daten] [Toshio Kawahara, Masahiko Emoto, Hirofumi Watanabe, Makoto Hamabe, Sataro Yamaguchi, Yasuo Hikichi, Masahiro Minowa] Reducing cryogenic heat leaks is critical for superconducting applications. Reduction of heat leak at the terminals is essential for uses with short-length applications, where cryogenic losses at the terminals dominate. We are developing a 200-m-class superconducting direct current (DC) transmission and distribution system (CASER-2), and have used a Peltier current lead (PCL) for heat insulation at the terminals. The PCL consists of thermoelectric elements and copper leads, which enhance the performance of superconducting systems. As DC flows through the current lead, thermoelectric elements on opposite terminations of a superconducting line can be used to decrease the heat ingress to the cryogenic environment (n-type on one end, p-type on the opposite end). During the current feeding and cooling test, a large temperature difference was observed across thermoelectric elements in the PCL. This demonstrates that we have successfully insulated the heat leak at the current lead. During the fourth cooling test, we established a new PCL design with p-type elements at terminalB, and then compared the performance of the terminals. Several improvements were implemented, including balancing the resistances of the PCL to enhance the stability of the superconducting systems. TMS, 2013 Peltier current lead (PCL) nationallicence superconducting applications nationallicence DC transmission and distribution system nationallicence BiTe alloy nationallicence Kawahara Toshio Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut Emoto Masahiko Department of Large Helical Device Project, National Institute for Fusion Science, 322-6 Oroshi, 509-5292, Toki, Gifu, Japan aut Watanabe Hirofumi Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut Hamabe Makoto Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut Yamaguchi Sataro Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut Hikichi Yasuo SWCC Showa Cable Systems Co. Ltd., 4-1-1 Minami-Hashimoto, Chuo, 252-0253, Sagamihara, Kanagawa, Japan aut Minowa Masahiro SWCC Showa Cable Systems Co. Ltd., 4-1-1 Minami-Hashimoto, Chuo, 252-0253, Sagamihara, Kanagawa, Japan aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2337-2342 0361-5235 42:7<2337 2013 42 11664 https://doi.org/10.1007/s11664-012-2419-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2419-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kawahara Toshio Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut NATIONALLICENCE 700 1- Emoto Masahiko Department of Large Helical Device Project, National Institute for Fusion Science, 322-6 Oroshi, 509-5292, Toki, Gifu, Japan aut NATIONALLICENCE 700 1- Watanabe Hirofumi Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut NATIONALLICENCE 700 1- Hamabe Makoto Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut NATIONALLICENCE 700 1- Yamaguchi Sataro Center of Applied Superconductivity and Sustainable Energy Research, Chubu University, 1200 Matsumoto, 487-8501, Kasugai, Aichi, Japan aut NATIONALLICENCE 700 1- Hikichi Yasuo SWCC Showa Cable Systems Co. Ltd., 4-1-1 Minami-Hashimoto, Chuo, 252-0253, Sagamihara, Kanagawa, Japan aut NATIONALLICENCE 700 1- Minowa Masahiro SWCC Showa Cable Systems Co. Ltd., 4-1-1 Minami-Hashimoto, Chuo, 252-0253, Sagamihara, Kanagawa, Japan aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2337-2342 0361-5235 42:7<2337 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer