Temperature Dependence of AC Transport Current Loss of QMG Bulk Superconductor

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概要

• 論文の詳細を見る

• The AC transport current loss of a QMG bulk superconductor for a current-limiting device with a rectangular cross section was measured at various frequencies in the temperature range of 40–77 K. Since the AC transport current loss did not appreciably depend on frequency in the range of 35–70 Hz, the pinning loss was dominant. The experimental result was well explained by the numerical calculation by finite element method in which the Irie–Yamafuji model was assumed for the magnetic field dependence of critical current density. The AC transport current loss decreased markedly with decreasing temperature. Therefore, it is beneficial to decrease temperature, since the increase in cooling penalty is not significant. It was also found that cylindrical superconductors have a lower AC transport current loss than rectangular superconductors.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-10-15

著者

• MORITA Mitsuru

  Advanced Materials & Technology Research Laboratories, Nippon Steel Corporation

• MATSUSHITA Teruo

  Faculty of Engineering, Kyushu University

• Morita Mitsuru

  Advanced Technology Research Laboratories, Nippon Steel Corp., 20-1 Shintomi, Futtsu, Chiba 293-8511, Japan

• Otabe Edmund

  Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan

• Watanabe Tadaaki

  Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan

• kiuchi Masaru

  Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan

• Matsushita Teruo

  Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan

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