Development of a 22 kV/6.9 kV single-phase model for a 3 MVA HTS power transformer K Funaki, M Iwakuma, K Kajikawa, M Hara, J Suchiro, T Ito, Y Takata, ...
IEEE transactions on applied superconductivity 11 (1), 1578-1581, 2001
116 2001 Development of a 500kVA-class oxide-superconducting power transformer operated at liquid-nitrogen temperature K FUNAKI, M IWAKUMA, K KAJIKAWA, M TAKEO, J SUEHIRO, M HARA, ...
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan …, 1998
111 1998 Numerical evaluation of AC losses in HTS wires with 2D FEM formulated by self magnetic field K Kajikawa, T Hayashi, R Yoshida, M Iwakuma, K Funaki
IEEE transactions on applied superconductivity 13 (2), 3630-3633, 2003
108 2003 AC loss properties of a 1 MVA single-phase HTS power transformer M Iwakuma, K Funaki, K Kajikawa, H Tanaka, T Bohno, A Tomioka, ...
IEEE transactions on applied superconductivity 11 (1), 1482-1485, 2001
106 2001 AC inductive measurement of intergrain and intragrain currents in high-Tc oxide superconductors B Ni, T Munakata, T Matsushita, M Iwakuma, K Funaki, M Takeo, ...
Japanese journal of applied physics 27 (9R), 1658, 1988
81 1988 Preliminary tests of a 500 kVA-class oxide superconducting transformer cooled by subcooled nitrogen K Funaki, M Iwakuma, M Takeo, K Yamafuji, J Suchiro, M Hara, M Konno, ...
IEEE transactions on applied superconductivity 7 (2), 824-827, 1997
76 1997 Development of REBCO superconducting power transformers in Japan M Iwakuma, H Hayashi, H Okamoto, A Tomioka, M Konno, T Saito, ...
Physica C: Superconductivity 469 (15-20), 1726-1732, 2009
74 2009 Estimate of Attainable Critical Current Density in Superconducting YBa2Cu3O7-δ T Matsushita, M Iwakuma, Y Sudo, B Ni, T Kisu, K Funaki, M Takeo, ...
Japanese journal of applied physics 26 (9A), L1524, 1987
73 1987 Anomalous magnetic behavior due to reversible fluxoid motion in superconducting multifilamentary wires with very fine filaments F Sumiyoshi, M Matsuyama, M Noda, T Matsushita, K Funaki, M Iwakuma, ...
Japanese journal of applied physics 25 (2A), L148, 1986
71 1986 Development of a 3 -66/6.9 kV-2 MVA REBCO Superconducting Transformer M Iwakuma, K Sakaki, A Tomioka, T Miyayama, M Konno, H Hayashi, ...
IEEE Transactions on Applied Superconductivity 25 (3), 1-6, 2014
68 2014 Enhanced J c properties in superconducting NbTi composites by introducing Nb artificial pins with a layered structure K Matsumoto, H Takewaki, Y Tanaka, O Miura, K Yamafuji, K Funaki, ...
Applied physics letters 64 (1), 115-117, 1994
68 1994 Abnormal quench process with very fast elongation of normal zone in multi-strand superconducting cables M Iwakuma, H Kanetaka, K Tasaki, K Funaki, M Takeo, K Yamafuji
Cryogenics 30 (8), 686-692, 1990
60 1990 Progress of the first commercial project of high-temperature superconducting cables by KEPCO in Korea C Lee, H Son, Y Won, Y Kim, C Ryu, M Park, M Iwakuma
Superconductor Science and Technology 33 (4), 044006, 2020
56 2020 AC loss properties of YBCO superconducting tapes fabricated by IBAD–PLD technique M Iwakuma, K Toyota, M Nigo, T Kiss, K Funaki, Y Iijima, T Saitoh, ...
Physica C: Superconductivity 412, 983-991, 2004
55 2004 Development of a laser scribing process of coated conductors for the reduction of AC losses K Suzuki, J Matsuda, M Yoshizumi, T Izumi, Y Shiohara, M Iwakuma, A Ibi, ...
Superconductor Science and Technology 20 (8), 822, 2007
54 2007 Development of a 15 kW motor with a fixed YBCO superconducting field winding M Iwakuma, A Tomioka, M Konno, Y Hase, T Satou, Y Iijima, T Saitoh, ...
IEEE Transactions on Applied Superconductivity 17 (2), 1607-1610, 2007
52 2007 Development of a 1 T cryocooler-cooled pulse coil with a Bi2223 superconducting parallel conductor for SMES M Iwakuma, K Funaki, K Kajikawa, H Kanetaka, H Hayashi, K Tsutsumi, ...
IEEE transactions on applied superconductivity 9 (2), 928-931, 1999
52 1999 Theoretical investigation on the detection ratio of the magnetization in superconducting wires by a saddle-shaped pick-up coil M Iwakuma, M Nanri, M Fukui, Y Fukuda, K Kajikawa, K Funaki
Superconductor Science and Technology 16 (5), 545, 2003
51 2003 Design study of 10 MW REBCO fully superconducting synchronous generator for electric aircraft M Komiya, T Aikawa, H Sasa, S Miura, M Iwakuma, T Yoshida, ...
IEEE transactions on applied superconductivity 29 (5), 1-6, 2019
48 2019 Design study of 15-MW fully superconducting generators for offshore wind turbine M Saruwatari, K Yun, M Iwakuma, K Tamura, Y Hase, Y Sasamori, T Izumi
IEEE transactions on applied superconductivity 26 (4), 1-5, 2016
48 2016