電気システム工学部門

研究成果 1979 2019

1987
38 引用 (Scopus)

Estimate of attainable critical current density in superconducting yba2cu3o7-ै

Matsushita, T., Iwakuma, M., Sudo, Y., Ni, B., Kiss, T., Funaki, K., Takeo, M. & Yamafuji, K., 1 1 1987, : : Japanese Journal of Applied Physics. 26, 9A, p. 1524-1526 3 p.

研究成果: ジャーナルへの寄稿記事

Critical current density (superconductivity)
Flux pinning
Oxide superconductors
Electron scattering
Twinning
6 引用 (Scopus)

Integrated gradiometer with large β SQUID

Yoshida, K., Kohjiro, S., Enpuku, K. & Yamafuji, K., 1 1 1987, : : IEEE Transactions on Magnetics. 23, 2, p. 1106-1109 4 p.

研究成果: ジャーナルへの寄稿記事

SQUIDs
Damping
Magnetic couplings
Inductance
Degradation
10 引用 (Scopus)

Josephson analog amplifier with large current gain

Yoshida, K., Hashimoto, T., Nagatsuma, T. & Enpuku, K., 1 1 1987, : : IEEE Transactions on Magnetics. 23, 2, p. 723-726 4 p.

研究成果: ジャーナルへの寄稿記事

Transducers
Magnetic fields
Fluxes
Tunnel junctions
Electric potential
8 引用 (Scopus)

Millimeterwave emission from josephson oscillator through thin film junction electrode

Yoshida, K., Nagatsuma, T., Kumataka, S. & Enpuku, K., 1 1 1987, : : IEEE Transactions on Magnetics. 23, 2, p. 1283-1286 4 p.

研究成果: ジャーナルへの寄稿記事

Thin films
Electrodes
Tunnel junctions
Fluxes
Detectors
2 引用 (Scopus)

On the Effective Turn-Off of GTO by a Small Saturable Core

Harada, K., Sakamoto, H. & Shoyama, M., 1 1 1987, : : IEEE Transactions on Power Electronics. PE-2, 1, p. 20-27 8 p.

研究成果: ジャーナルへの寄稿記事

Magnetic cores
Inductance
Capacitance
Energy utilization
Networks (circuits)
1 引用 (Scopus)

Performance of Large-β SQUID with a Damping Resistance

Enpuku, K., Kohjiro, S. & Yoshida, K., 1 1 1987, : : Japanese Journal of Applied Physics. 26, S3-2, p. 1647-1648 2 p.

研究成果: ジャーナルへの寄稿記事

SQUIDs
Damping
damping
shunts
inductance
16 引用 (Scopus)

PHASE CONTROLLED DC-AC CONVERTER WITH HIGH FREQUENCY SWITCHING.

Harada, K., Sakamoto, H. & Shoyama, M., 1987, : : Unknown Journal. p. 13-19 7 p.

研究成果: ジャーナルへの寄稿記事

Switching frequency
Switches
Uninterruptible power systems
Electric power systems
3 引用 (Scopus)

SMALL UPS USING PHASE CONTROL.

Harada, K., Sakamoto, H. & Shoyama, M., 12 1 1987, INTELEC, International Telecommunications Energy Conference (Proceedings). IEEE, p. 516-520 5 p.

研究成果: 著書/レポートタイプへの貢献会議での発言

Uninterruptible power systems
Phase control
Switching frequency
10 引用 (Scopus)

Spatial distribution of trapped magnetic flux in the high tc superconductor Y1Ba2Cu3O7-δ

Kiss, T., Enpuku, K., Yoshida, K., Takeo, M. & Yamafuji, K., 1 1 1987, : : Japanese Journal of Applied Physics. 26, 8A, p. L1348-L1350

研究成果: ジャーナルへの寄稿記事

Magnetic flux
Spatial distribution
Superconducting materials
magnetic flux
spatial distribution
1 引用 (Scopus)

Transducer Characteristics of a Josephson Line as an Analog Amplifier

Yoshida, K., Hashimoto, T., Enpuku, K. & Yamafuji, K., 1 1 1987, : : Japanese Journal of Applied Physics. 26, S3-2, p. 1581-1582 2 p.

研究成果: ジャーナルへの寄稿記事

Transducers
transducers
amplifiers
analogs
Fluxes
1988
48 引用 (Scopus)

Ac inductive measurement of intergrain and intragrain currents in high-tc oxide superconductors

Ni, B., Munakata, T., Matsushita, T., Iwakuma, M., Funaki, K., Takeo, M. & Yamafuji, K., 1 1 1988, : : Japanese Journal of Applied Physics. 27, 9 R, p. 1658-1662 5 p.

研究成果: ジャーナルへの寄稿記事

Oxide superconductors
Current density
current density
oxides
Magnetic flux
1 引用 (Scopus)

Conversion efficiency of a large-β DC-SQUID with a resistively shunted inductance

Kohjiro, S., Enpuku, K., Yoshida, K. & Yamafuji, K., 1 1 1988, : : Japanese Journal of Applied Physics. 27, 2R, p. 214-218 5 p.

研究成果: ジャーナルへの寄稿記事

SQUIDs
inductance
Inductance
Conversion efficiency
direct current
23 引用 (Scopus)

Critical transport current density in sintered oxide superconductors with high critical temperature

Matsushita, T., Ni, B., Sudo, Y., Iwakuma, M., Funaki, K., Takeo, M. & Yamafuji, K., 1 1 1988, : : Japanese Journal of Applied Physics. 27, 6R, p. 929-936 8 p.

研究成果: ジャーナルへの寄稿記事

Oxide superconductors
Volume fraction
critical temperature
Current density
current density
8 引用 (Scopus)

Experimental study of noise characteristics of large-β dc SQUID with resistively shunted inductance

Kohjiro, S., Enpuku, K., Yoshida, K. & Yamafuji, K., 1 1 1988, : : Japanese Journal of Applied Physics. 27, 10 R, p. 1871-1874 4 p.

研究成果: ジャーナルへの寄稿記事

SQUIDs
inductance
Inductance
Josephson junctions
critical current
38 引用 (Scopus)

Flux-flow-type Josephson oscillator for millimeter and submillimeter wave region. IV. Thin-film coupling

Qin, J., Enpuku, K. & Yoshida, K., 12 1 1988, : : Journal of Applied Physics. 63, 4, p. 1130-1135 6 p.

研究成果: ジャーナルへの寄稿記事

submillimeter waves
millimeter waves
oscillators
thin films
electrodes
45 引用 (Scopus)

Phase-Controlled DC-AC Converter with High-Frequency Switching

Harada, K., Sakamoto, H. & Shoyama, M., 1 1 1988, : : IEEE Transactions on Power Electronics. 3, 4, p. 406-411 6 p.

研究成果: ジャーナルへの寄稿記事

Switching frequency
Switches
Uninterruptible power systems
Electric commutation
Electric power systems
3 引用 (Scopus)

Spatial distribution of trapped magnetic flux in the high-tcsuperconductor y1ba2cu3oii. comparison with the critical state model

Kiss, T., Enpuku, K., Yoshida, K., Takeo, M. & Yamafuji, K., 1 1 1988, : : Japanese Journal of Applied Physics. 27, 7A, p. L1287-L1289

研究成果: ジャーナルへの寄稿記事

Magnetic flux
Spatial distribution
magnetic flux
spatial distribution
Superconducting materials
1989
7 引用 (Scopus)

A new anode-electrode structure for sputter deposition of high-quality y-ba-cu-o thin films

Kiss, T., Ariyoshi, Y., Enpuku, K., Yoshida, K., Takeo, M. & Yamafuji, K., 8 1 1989, : : Japanese Journal of Applied Physics. 28, 8 A, p. L1385-L1388

研究成果: ジャーナルへの寄稿記事

Sputter deposition
Anodes
anodes
Thin films
Electrodes
20 引用 (Scopus)

Breakdown Characteristics of Cryogenic Gaseous Nitrogen and Estimation of its Electrical Insulation Properties

Hara, M., Suehiro, J., Matsumoto, H. & Kaneko, T., 1 1 1989, : : IEEE Transactions on Electrical Insulation. 24, 4, p. 609-617 9 p.

研究成果: ジャーナルへの寄稿記事

Cryogenics
Insulation
Liquid nitrogen
Nitrogen
Gases
20 引用 (Scopus)

Effect of flux creep on current-voltage characteristics of superconducting Y-Ba-Cu-O thin films

Enpuku, K., Kiss, T., Sako, R., Yoshida, K., Takeo, M. & Yamafuji, K., 1 1 1989, : : Japanese Journal of Applied Physics. 28, 6A, p. L991-L993

研究成果: ジャーナルへの寄稿記事

Current voltage characteristics
Creep
Fluxes
Thin films
temperature dependence
2 引用 (Scopus)

Evaluation of grain-coupling strength of YBaCuO superconductors by their magnetic-field profile measurements

Yoshida, K., Kiss, T., Fuchigami, N. & Enpuku, K., 1 1 1989, : : IEEE Transactions on Magnetics. 25, 2, p. 2556-2559 4 p.

研究成果: ジャーナルへの寄稿記事

Magnetic field measurement
Superconducting materials
Critical currents
Magnetic flux
Thin films
5 引用 (Scopus)

Evaluation of temperature and magnetic-field dependence of pinning potential of high Tc superconductors from flux-creep resistivity experiments

Enpuku, K., Yoshida, K., Takeo, M. & Yamafuji, K., 1 1 1989, : : Japanese Journal of Applied Physics. 28, 12 A, p. L2171-L2174

研究成果: ジャーナルへの寄稿記事

Superconducting materials
Creep
Temperature distribution
temperature distribution
Magnetic fields
9 引用 (Scopus)

Inductive coupling of a flux-flow type josephson oscillator to a stripline

Yoshida, K., Qin, J. & Enpuku, K., 1 1 1989, : : IEEE Transactions on Magnetics. 25, 2, p. 1084-1087 4 p.

研究成果: ジャーナルへの寄稿記事

Fluxes
Wavelength
Electrodes
Experiments
2 引用 (Scopus)

Low noise operation of a DC squid in a large β regime and its application to the design of a high TC squid

Enpuku, K., Kohjiro, S. & Yoshida, K., 1 1 1989, : : IEEE Transactions on Magnetics. 25, 2, p. 1154-1157 4 p.

研究成果: ジャーナルへの寄稿記事

SQUIDs
Inductance
Critical currents
Superconducting materials
Modulation

Methods for the improvement of electrical insulation in vacuum in the presence of transverse magnetic field

Hara, M., Suehiro, J., Shigematsu, H. & Yano, S., 1 1 1989, : : IEEJ Transactions on Fundamentals and Materials. 109, 9, p. 375-382 8 p.

研究成果: ジャーナルへの寄稿記事

Insulation
Vacuum
Magnetic fields

Monthly electric load forecasting using GMDH

Murata, J. & Sagara, S., 1989, : : Unknown Journal. 2, 8, p. 1197-1202 6 p.

研究成果: ジャーナルへの寄稿記事

Electric load forecasting
forecasting method
heuristics
modeling
method
6 引用 (Scopus)

Performances of a flux-flow-type josephson amplifier

Hashimoto, T., Enpuku, K. & Yoshida, K., 1 1 1989, : : IEEE Transactions on Magnetics. 25, 2, p. 1266-1269 4 p.

研究成果: ジャーナルへの寄稿記事

Fluxes
Inductance
Electrodes
Kinetics
Electric potential
9 引用 (Scopus)

Quench analysis in a 72 kVA superconducting four-winding power transformer

Iwakuma, M., Funaki, K., Kanetaka, H., Tasaki, K., Takeo, M. & Yamafuji, K., 1 1 1989, : : Cryogenics. 29, 11, p. 1055-1062 8 p.

研究成果: ジャーナルへの寄稿記事

Power transformers
transformers
propagation
Superconducting cables
propagation velocity
1 引用 (Scopus)

Voltage resonant buck-boost converter using multi-layer-winding transformer

Shoyama, M., Harada, K., Saen, H. & Moriya, M., 1989, : : PESC Record - IEEE Annual Power Electronics Specialists Conference. 2, p. 895-901 7 p.

研究成果: ジャーナルへの寄稿記事

Transformer windings
Transformer
acceleration (physics)
Converter
transformers
1990
43 引用 (Scopus)

Abnormal quench process with very fast elongation of normal zone in multi-strand superconducting cables

Iwakuma, M., Kanetaka, H., Tasaki, K., Funaki, K., Takeo, M. & Yamafuji, K., 1 1 1990, : : Cryogenics. 30, 8, p. 686-692 7 p.

研究成果: ジャーナルへの寄稿記事

Superconducting cables
strands
cables
elongation
Elongation
6 引用 (Scopus)

Breakdown characteristics of cryogenic gaseous helium in uniform electric field and space charge modified non-uniform field

Hara, M., Suehiro, J. & Matsumoto, H., 1 1 1990, : : Cryogenics. 30, 9, p. 787-794 8 p.

研究成果: ジャーナルへの寄稿記事

Helium
Electric space charge
Cryogenics
coronas
cryogenics
1 引用 (Scopus)

Methods for the improvement of electrical insulation in vacuum in the presence of transverse magnetic field

Hara, M., Suehiro, J., Shigematsu, H. & Yano, S., 1 1 1990, : : Electrical Engineering in Japan. 110, 2, p. 27-35 9 p.

研究成果: ジャーナルへの寄稿記事

Insulation
Vacuum
Magnetic fields

One‐day‐ahead load forecasting via self‐organization of model

Murata, J. & Sagara, S., 1 1 1990, : : Electrical Engineering in Japan. 110, 5, p. 31-43 13 p.

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

Relation between Pinning Potential and Critial Current Density of YBaCuO Superconducting Thin Films

Enpuku, K., Sako, R., Kiss, T. & Yoshida, K., 1 1 1990, : : Japanese Journal of Applied Physics. 29, 7, p. L1069-L1071

研究成果: ジャーナルへの寄稿記事

Superconducting films
Current density
current density
critical current
Current voltage characteristics
1991
4 引用 (Scopus)

Critical Current and Magnetic Flux Noise of YBaCuO Thin Films in the Presence of Flux Creep

Enpuku, K., Kiss, T., Sako, R., Hirata, M. & Yoshida, K., 1 1 1991, : : IEEE Transactions on Magnetics. 27, 2, p. 1394-1397 4 p.

研究成果: ジャーナルへの寄稿記事

Critical currents
Magnetic flux
Creep
Fluxes
Thin films
1 引用 (Scopus)

Daily load curve forecasting via automatic selection of models

Murata, J., Kimura, K., Sagara, S. & Kamakura, T., 1 1 1991, : : IEE Conference Publication. 336, p. 270-272 3 p.

研究成果: ジャーナルへの寄稿Conference article

Temperature
3 引用 (Scopus)

Dc superconducting quantum interference device utilizing the high tc step-edge junction

Enpuku, K., Udomoto, J., Kiss, T., Erami, A., Kuromizu, Y. & Yoshida, K., 1 1 1991, : : Japanese Journal of Applied Physics. 30, 6, p. L1121-L1124

研究成果: ジャーナルへの寄稿記事

SQUIDs
interference
Epitaxial films
Electric potential
Magnetic flux
4 引用 (Scopus)

Design And Performance of Flux-Flow Type Josephson Oscillator Coupled To A Stripline

Yoshida, K., Kudo, K. & Enpuku, K., 1 1 1991, : : IEEE Transactions on Magnetics. 27, 2, p. 3351-3354 4 p.

研究成果: ジャーナルへの寄稿記事

Inductance
Fluxes
Bandwidth
Electrodes
Experiments
1 引用 (Scopus)

Design of the flux-flow type Josephson oscillator inductively coupled to a stripline impedance transformer

Kudo, K., Yoshida, K., Enpuku, K. & Yamafuji, K., 12 1 1991, : : Superconductor Science and Technology. 4, 11, p. 680-682 3 p., 035.

研究成果: ジャーナルへの寄稿記事

transformers
Frequency bands
oscillators
impedance
Fluxes
2 引用 (Scopus)

Failure diagnosis for a large-scale, nonlinear and time-varying plant based on a new identification method of small variations of parameters

Uchida, M., Toyota, Y., Nakamura, H., Sagara, S., Kumamara, K., Wada, K. & Murata, J., 12 1 1991, IECON Proceedings (Industrial Electronics Conference). Publ by IEEE, p. 149-154 6 p. (IECON Proceedings (Industrial Electronics Conference); 巻数 1).

研究成果: 著書/レポートタイプへの貢献会議での発言

Model reference adaptive control
Adaptive control systems
Identification (control systems)
Simulators
17 引用 (Scopus)

Instability in kiloamp class a.c. superconducting cables

Funaki, K., Nakashima, M., Iwakuma, M., Takeo, M. & Yamafuji, K., 1 1 1991, : : Cryogenics. 31, 7, p. 594-597 4 p.

研究成果: ジャーナルへの寄稿記事

Superconducting cables
strands
cables
current distribution
Degradation
7 引用 (Scopus)

Kinetic-Inductance Coupling Scheme For Superconducting Stripline System And Its Device Applications

Yoshida, K., Kudo, K., Hossain, M. S. & Enpuku, K., 1 1 1991, : : IEEE Transactions on Magnetics. 27, 2, p. 2692-2695 4 p.

研究成果: ジャーナルへの寄稿記事

Inductance
Microwaves
Superconducting films
Kinetics
Directional couplers
1 引用 (Scopus)

Mobilities of charge carriers generated by corona discharge in low temperature helium gas

Suehiro, J., Yamamoto, K. & Hara, M., 8 14 1991, : : Journal of Physics D: Applied Physics. 24, 8, p. 1360-1366 7 p.

研究成果: ジャーナルへの寄稿記事

Helium
electric corona
Charge carriers
Discharge (fluid mechanics)
charge carriers
18 引用 (Scopus)

Modeling the dc superconducting quantum interference device coupled to the multiturn input coil

Enpuku, K. & Yoshida, K., 12 1 1991, : : Journal of Applied Physics. 69, 10, p. 7295-7300 6 p.

研究成果: ジャーナルへの寄稿記事

coupling circuits
coils
interference
radio frequencies
inductance
1 引用 (Scopus)

New microwave components with inductively coupled superconducting striplines

Yoshida, K., Hossain, M. S., Enpuku, K. & Yamafuji, K., 12 1 1991, : : Superconductor Science and Technology. 4, 11, p. 686-688 3 p., 037.

研究成果: ジャーナルへの寄稿記事

Strip telecommunication lines
inductance
Inductance
Microwaves
microwaves
4 引用 (Scopus)

Quench Protection of Superconducting Transformers

Iwakuma, M., Funaki, K., Takeo, M. & Yamafuji, K., 1 1 1991, : : IEEE Transactions on Magnetics. 27, 2, p. 2080-2083 4 p.

研究成果: ジャーナルへの寄稿記事

Electric potential
Inductance
Copper
Electric fault currents
Equivalent circuits
4 引用 (Scopus)

Relaxation Oscillator Using Hysteretic Current-Voltage Characteristics of Ybacuo Thin Strips

Enpuku, K., Kiss, T. & Yoshida, K., 1 1 1991, : : IEEE Transactions on Magnetics. 27, 2, p. 3058-3061 4 p.

研究成果: ジャーナルへの寄稿記事

Relaxation oscillators
Current voltage characteristics
Shims
Magnets
Temperature
17 引用 (Scopus)

Zero-voltage-switched push-pull DC-DC converter

Shoyama, M. & Harada, K., 10 1991, PESC Record - IEEE Power Electronics Specialists Conference. Publ by IEEE, p. 223-229 7 p.

研究成果: 著書/レポートタイプへの貢献会議での発言

DC-DC converters
Electric potential
Networks (circuits)
Electric commutation
Modulation
1992
1 引用 (Scopus)

Breakdown behavior of insulation elements in superconducting magnet coils

Hara, M. & Suehiro, J., 1992, Proc 3 Int Conf Prop Appl Dielectr Mater. Publ by IEEE, p. 411-414 4 p.

研究成果: 著書/レポートタイプへの貢献会議での発言

Liquefied gases
Superconducting magnets
Electric breakdown
Coolants
Helium
4 引用 (Scopus)

Deflection of Streamer Channels in High Magnetic Field

Hara, M., Suehiro, J. & Wakiyama, T., 1 1 1992, : : IEEE Transactions on Electrical Insulation. 27, 6, p. 1179-1185 7 p.

研究成果: ジャーナルへの寄稿記事

Electric space charge
Electric fields
Magnetic fields
Lorentz force
Dielectric films