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Featured researches published by Iwakuma Masataka.


european conference on power electronics and applications | 2005

UPS SMES using dry type superconducting coil designed to protect from momentary voltage drop

Chikaraishi Hirotaka; Mito Toshiyuki; B. Tomomi; Sumiyoshi Fumio; K. Akifumi; Iwakuma Masataka; H. Tsutomu; Okumura Kagao; K. Atsuko; A. Ryo; H. Kazuo

To protect a facility from momentary voltage drop, we are studying a short time SMES system. For this SMES, a helium free superconducting pulse coil using conduction cooling is developed. Also short time power converters and a high-speed voltage drop detector for a 1 MJ class SMES are designed. To confirm the design of components, a 100 kJ class demo coil and converters are constructed and tested


european conference on power electronics and applications | 2007

Study of SMES system using dry type superconducting coil designed to protect from momentary voltage drop

Chikaraishi Hirotaka; Mito Toshiyuki; Baba Tomomi; Sumiyoshi Fumio; Kawagoe Akifumi; Iwakuma Masataka; Hemmi Tsutomu; Okumura Kagao; Kuge Atsuko; Abe Ryo

For a SMES to protect the whole facility from momentaly voltage drop, a helium free superconducting pulse coil using conduction cooling is developed. Also short time power converters and a high-speed voltage drop detector for a 1 MJ class SMES are designed. To confirm the design of components, a 100 kJ class demo system is constricted tested. After that the half part of 1 MJ SMES is constricted for operation tests.


Archive | 1998

SUPERCONDUCTING MEMBER COOLING APPARATUS

Yoshida Shigeru; Kamioka Yasuharu; Uemori Katanobu; Funaki Kazuo; Iwakuma Masataka; Yamada Hisao; Sanuki Yasutaka; Hata Hiroshi; Fujimoto Hiroyuki; Kamijiyou Hirotaka; Nagashima Masaru; Herai Toshiki; Ikeda Kazuya


Archive | 2001

COOLING DEVICE FOR SUPERCONDUCTIVE MEMBER

Yoshida Shigeru; Ohashi Koichi; Kamioka Yasuharu; Sagara Isamu; Tsutsumi Katsuya; Kimura Hironobu; Bono Takaaki; Konno Masayuki; Funaki Kazuo; Iwakuma Masataka


Archive | 2010

COOLING DEVICE FOR SUPERCONDUCTING MEMBER

Yoshida Shigeru; Ohashi Koichi; Kamioka Yasuharu; Sagara Isamu; Tsutsumi Katsuya; Kimura Hironobu; Bono Takaaki; Konno Masayuki; Funaki Kazuo; Iwakuma Masataka


Archive | 2003

MEASURING APPARATUS OF ENERGIZATION CHARACTERISTIC IN SUPERCONDUCTIVE MATERIAL

Otabe Edmund Soji; Matsushita Teruo; Iwakuma Masataka; Bono Takaaki; Kamiide Toshio; Konno Masayuki


電気学会全国大会講演論文集(CD-ROM) | 2017

鞍型ピックアップコイル法による,スクライビングを施したEuBCO+BHO超電導テープ線材に生じる交流損失特性の測定,評価

Ueno Tatsuhito; Ito Tetsuya; Iwakuma Masataka; Machi Takato; Ibi Akira; Izumi Teruo


Archive | 2017

SUPERCONDUCTING COIL AND SUPERCONDUCTING COIL DEVICE

Iwakuma Masataka; Izumi Teruo; Shiobara Yu; Tomioka Akira; Watanabe Kazuyuki; Konno Masayuki


Archive | 2016

METHOD FOR OPERATING SUPERCONDUCTING COIL

Iwakuma Masataka; Izumi Teruo; Shiobara Yu; Tomioka Akira; Konno Masayuki


Archive | 2013

SUPERCONDUCTION ROTARY MACHINE

Iwakuma Masataka; Shiobara Yu; Izumi Teruo; Daimatsu Kazuya; Tomioka Akira; Konno Masayuki

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林 秀美

Korea Electric Power Corporation

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Hata Hiroshi

Railway Technical Research Institute

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