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2005

Medium factors of electrical insulation systems in high temperature superconducting power apparatus with coil structure for equivalent ac withstand voltage test at room temperature

Hara, M., Kurihara, T., Nakano, R. & Suehiro, J., Jan 1 2005, In : Cryogenics. 45, 10-11, p. 705-717 13 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Numerical calculation of Ac losses in stacked Bi-2223 tapes exposed to oblique magnetic field

Hayashi, T., Kajikawa, K., Iwakuma, M. & Funaki, K., Jun 1 2005, In : IEEE Transactions on Applied Superconductivity. 15, 2 PART III, p. 2863-2866 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Particle-triggered pre-breakdown phenomena in atmospheric air gap under ac voltage

Hara, M., Negara, Y., Setoguchi, M., Kurihara, T., Suehiro, J. & Hayashi, N., Oct 1 2005, In : IEEE Transactions on Dielectrics and Electrical Insulation. 12, 5, p. 1071-1081 11 p.

Research output: Contribution to journalArticle

29 Citations (Scopus)

Proposal for new particle deactivation methods in GIS

Khan, Y., Okabe, S., Suehiro, J. & Hara, M., Feb 1 2005, In : IEEE Transactions on Dielectrics and Electrical Insulation. 12, 1, p. 147-156 10 p.

Research output: Contribution to journalArticle

18 Citations (Scopus)

Prototype development of a conduction-cooled LTS pulse coil for UPS-SMES

Mito, T., Kawagoe, A., Chikaraishi, H., Okumura, K., Abe, R., Henmi, T., Maekawa, R., Seo, K., Baba, T., Yokota, M., Morita, Y., Ogawa, H., Yamauchi, K., Iwakuma, M. & Sumiyoshi, F., Jun 1 2005, In : IEEE Transactions on Applied Superconductivity. 15, 2 PART II, p. 1935-1938 4 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Stability evaluation of a conduction-cooled prototype LTS pulse coil for UPS-SMES

Kawagoe, A., Sumiyoshi, F., Mito, T., Chikaraishi, H., Maekawa, R., Seo, K., Baba, T., Henmi, T., Okumura, K., Iwakuma, M., Hayashi, K. & Abe, R., Jun 1 2005, In : IEEE Transactions on Applied Superconductivity. 15, 2 PART II, p. 1891-1894 4 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Thermal runaway of a 1 T cryocooler-cooled oxide superconducting pulsed coil in Ac operation

Miyazaki, H., Harada, S., Iwakuma, M., Funaki, K., Hayashi, H. & Tomioka, A., Jun 1 2005, In : IEEE Transactions on Applied Superconductivity. 15, 2 PART II, p. 1663-1666 4 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2004

Ac loss and thermal runaway of 1 T cryocooler-cooled oxide superconducting pulsed coil

Miyazaki, H., Iwamoto, A., Iwakuma, M., Funaki, K., Hayashi, H. & Tomioka, A., Jun 1 2004, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 774-777 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

AC loss properties of YBCO superconducting tapes fabricated by IBAD-PLD technique

Iwakuma, M., Toyota, K., Nigo, M., Kiss, T., Funaki, K., Iijima, Y., Saitoh, T., Yamada, Y. & Shiohara, Y., Oct 1 2004, In : Physica C: Superconductivity and its applications. 412-414, SPEC. ISS., p. 983-991 9 p.

Research output: Contribution to journalArticle

33 Citations (Scopus)

AC operating test results for a conduction-cooled HTS coil

Tasaki, K., Kuriyama, T., Nomura, S., Sumiyoshi, Y., Hayashi, H., Kimura, H., Iwakuma, M. & Funaki, K., Jun 1 2004, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 731-734 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Determination method of equivalent insulation test voltage at room temperature for high temperature superconducting power apparatus with coil structure

Hara, M., Kurihara, T., Nishioka, T., Suehiro, J. & Okamoto, H., Apr 1 2004, In : Cryogenics. 44, 4, p. 229-239 11 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Development of UPS-SMES as a protection from momentary voltage drop

Mito, T., Kawagoe, A., Chikaraishi, H., Okumura, K., Abe, R., Baba, T., Yamauchi, K., Yokota, M., Henmi, T., Seo, K., Hayashi, K., Iwakuma, M. & Sumiyoshi, F., Jun 1 2004, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 721-726 6 p.

Research output: Contribution to journalArticle

19 Citations (Scopus)

Experiments of the HTS floating coil system in the Mini-RT project

Yanagi, N., Mito, T., Morikawa, J., Ogawa, Y., Ohkuni, K., Hori, D., Yamakoshi, S., Iwakuma, M., Uede, T., Itoh, I., Fukagawa, M. & Fukui, S., Jun 1 2004, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 1539-1542 4 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Improvement of the Ozone Generation Efficiency by Silent Discharge at Cryogenic Temperature

Suehiro, J., Takahashi, M., Nishi, Y., Ding, W., Imasaka, K. & Hara, M., Jan 1 2004, In : IEEJ Transactions on Fundamentals and Materials. 124, 9, p. 791-796 6 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Numerical calculation of magnetization losses in single Bi-2223 tape with anisotropic transport properties by 2D-FEM directly analyzing the field distribution

Hayashi, T., Yoshida, R., Fukuda, Y., Kajikawa, K., Iwakuma, M. & Funaki, K., Oct 1 2004, In : Physica C: Superconductivity and its applications. 412-414, SPEC. ISS., p. 1129-1133 5 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)
1 Citation (Scopus)

Thickness dependence of ac losses in circular disks of YBa2Cu3O7 films in perpendicular magnetic fields

Suenaga, M., Li, Q., Ye, Z., Iwakuma, M., Toyota, K., Funaki, F., Foltyn, S. R., Wang, H. & Clem, J. R., Jan 1 2004, In : Journal of Applied Physics. 95, 1, p. 208-213 6 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Winding techniques for conduction cooled LTS pulse coils for 100 kJ class UPS-SMES as a protection from momentary voltage drops

Kawagoe, A., Sumiyoshi, F., Mito, T., Chikaraishi, H., Baba, T., Okumura, K., Iwakuma, M., Hemmi, T., Hayashi, K., Abe, R., Ushiku, T. & Miyoshi, K., Jun 1 2004, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 727-730 4 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)
2003

ac losses in circular disks of thin YBa2Cu3O7 films in perpendicular magnetic fields

Suenaga, M., Solovyov, V. F., Li, Q., Ye, Z., Wiesmann, H. J., Iwakuma, M., Fukui, M., Toyota, K., Funaki, F., Johansen, T. H., Shantsev, D. V. & Clem, J. R., Jul 1 2003, In : Journal of Applied Physics. 94, 1, p. 502-506 5 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Balanced Switching Converter to Reduce Common-Mode Conducted Noise

Shoyama, M., Li, G. & Ninomiya, T., Dec 1 2003, In : IEEE Transactions on Industrial Electronics. 50, 6, p. 1095-1099 5 p.

Research output: Contribution to journalArticle

66 Citations (Scopus)

Common-Mode Noise Reduction by Current Cancellation in Balanced Buck-Boost Switching Converter

Shoyama, M., Ohba, M. & Ninomiya, T., 2003, In : Unknown Journal. p. 499-504 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Dielectrophoretic filter for separation and recovery of biological cells in water

Suehiro, J., Zhou, G., Imamura, M. & Hara, M., Sep 1 2003, In : IEEE Transactions on Industry Applications. 39, 5, p. 1514-1521 8 p.

Research output: Contribution to journalArticle

73 Citations (Scopus)

Electrical Breakdown Triggered by a Free Conducting Spherical Particle in Saturated Liquid He I and He II under Uniform dc Field

Hara, M., Nakagawa, H., Suehiro, J. & Shinohara, T., Dec 1 2003, In : IEEE Transactions on Dielectrics and Electrical Insulation. 10, 6, p. 1022-1031 10 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Estimation of AC losses in the windings of a 1 MVA HTS transformer

Fukuda, Y., Kajikawa, K., Iwakuma, M., Funaki, K., Bohno, T., Tomioka, A., Konno, M., Yagi, Y., Maruyama, H., Yoshida, S., Tsutsumi, K., Hayashi, H. & Honda, K., Mar 1 2003, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 8, 1, p. 31-36 6 p.

Research output: Contribution to journalArticle

Estimation of partial discharge onset characteristics in gases around a triple junction

Hara, M., Kurihara, T., Kozuru, S., Suehiro, J. & Hayashi, N., Jul 15 2003, In : Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi). 144, 1, p. 1-11 11 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Experimental studies of free conducting wire particle behavior between non-parallel plane electrodes with ac voltages in air

Sakai, K. I., Abella, D. L., Khan, Y., Suehiro, J. & Hara, M., Jun 1 2003, In : IEEE Transactions on Dielectrics and Electrical Insulation. 10, 3, p. 418-424 7 p.

Research output: Contribution to journalArticle

42 Citations (Scopus)
218 Citations (Scopus)

Field angle dependence of ac losses in stacked Bi-2223 Ag-sheathed tapes

Fukuda, Y., Toyota, K., Kajikawa, K., Iwakuma, M. & Funaki, K., Jun 2003, In : IEEE Transactions on Applied Superconductivity. 13, 2 III, p. 3610-3613 4 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)

High sensitive detection of biological cells using dielectrophoretic impedance measurement method combined with electropermeabilization

Suehiro, J., Shutou, M., Hatano, T. & Hara, M., Nov 15 2003, In : Sensors and Actuators, B: Chemical. 96, 1-2, p. 144-151 8 p.

Research output: Contribution to journalArticle

73 Citations (Scopus)

Influence of gap length on the gas-puff z-pinch plasma produced by an inductive pulsed power system

Imasaka, K., Takahashi, K., Suehiro, J. & Hara, M., Sep 1 2003, In : Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi). 144, 4, p. 1-8 8 p.

Research output: Contribution to journalArticle

42 Citations (Scopus)

Noise Reduction Mechanism in Common-Source Type Active-Clamped DC-DC Converters

Li, G., Shoyama, M. & Ninomiya, T., 2003, In : Unknown Journal. p. 505-509 5 p.

Research output: Contribution to journalArticle

Partial Discharge Characteristics in an Artificial Air-filled Void under Superimposed Sinusoidal Voltages at LN2 Temperature

Kurihara, T., Nishioka, T., Suehiro, J. & Hara, M., Jan 1 2003, In : IEEJ Transactions on Power and Energy. 123, 11, p. 1280-1287 8 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Quench time lag of NbTi mechanical PCS with ramped current waveforms

Suehiro, J. & Hara, M., Jan 1 2003, In : Cryogenics. 43, 1, p. 19-24 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Selective detection of specific bacteria using dielectrophoretic impedance measurement method combined with an antigen-antibody reaction

Suehiro, J., Noutomi, D., Shutou, M. & Hara, M., Jun 2003, In : Journal of Electrostatics. 58, 3-4, p. 229-246 18 p.

Research output: Contribution to journalArticle

56 Citations (Scopus)

Selective detection of viable bacteria using dielectrophoretic impedance measurement method

Suehiro, J., Hamada, R., Noutomi, D., Shutou, M. & Hara, M., Feb 1 2003, In : Journal of Electrostatics. 57, 2, p. 157-168 12 p.

Research output: Contribution to journalArticle

180 Citations (Scopus)

Soft Touch Mass-Reduced-Mode Control of Attractive Force in SLIM Vehicle Propulsion

Yoshida, K. & Yoshida, T., Sep 1 2003, In : IEEJ Transactions on Industry Applications. 123, 5, p. 575-581 7 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Theoretical and experimental studies for spherical free-conducting particle behavior between non-parallel plane electrodes with ac voltages in air

Sakai, K. I., Abella, D. L., Khan, Y., Suehiro, J. & Hara, M., Jun 1 2003, In : IEEE Transactions on Dielectrics and Electrical Insulation. 10, 3, p. 404-417 14 p.

Research output: Contribution to journalArticle

35 Citations (Scopus)

Theoretical investigation on the detection ratio of the magnetization in superconducting wires by a saddle-shaped pick-up coil

Iwakuma, M., Nanri, M., Fukui, M., Fukuda, Y., Kajikawa, K. & Funaki, K., May 1 2003, In : Superconductor Science and Technology. 16, 5, p. 545-556 12 p.

Research output: Contribution to journalArticle

36 Citations (Scopus)

Wire Particle Motion Behavior and Breakdown Characteristics around Different Shaped Spacers within Diverging Air Gap

Khan, Y., Oda, A., Suehiro, J., Hara, M. & Okabe, S., Jan 1 2003, In : IEEJ Transactions on Power and Energy. 123, 11, p. 1288-1295 8 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)
2002

Ac losses in superconducting parallel conductors in saturation case

Tanaka, H., Iwakuma, M. & Funaki, K., Mar 1 2002, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 7, 1, p. 13-18 6 p.

Research output: Contribution to journalArticle

Balanced buck-boost switching converter to reduce common-mode conducted noise

Shoyama, M., Ohba, M. & Ninomiya, T., 2002, In : Unknown Journal. 4, p. 2056-2062 7 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)
25 Citations (Scopus)

DC pre-breakdown phenomena and breakdown characteristics in the presence of conducting particles in liquid nitrogen

Hara, M., Suehiro, J., Maeda, H. & Nakashima, H., Feb 1 2002, In : IEEE Transactions on Dielectrics and Electrical Insulation. 9, 1, p. 23-30 8 p.

Research output: Contribution to journalArticle

19 Citations (Scopus)

Experimental study on the ac loss properties of two-strand parallel conductors composed of superconducting multifilamentary strands

Iwakuma, M., Tanaka, H. & Funaki, K., Nov 1 2002, In : Superconductor Science and Technology. 15, 11, p. 1537-1546 10 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Experimental study on the dependence of ac losses in superconducting parallel conductors on the distance between strands

Tanaka, H., Matsuda, K., Iwakuma, M., Kajikawa, K., Funaki, K., Konno, M., Nose, S., Ueyama, M., Hayashi, K. & Sato, K., Aug 1 2002, In : Physica C: Superconductivity and its applications. 372-376, PART 3, p. 1810-1813 4 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Fabrication of 1 kA class oxide superconducting transformer cooled by cryocooler for AC transport measurement

Otabe, E. S., Yasuda, T., Matsushita, T., Iwakuma, M. & Bohno, T., Aug 1 2002, In : Physica C: Superconductivity and its applications. 372-376, PART 3, p. 1711-1714 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Frequency dependence of AC magnetization in stacked Bi-2223 Ag-sheathed tapes

Kajikawa, K., Fukuda, Y., Moriyama, H., Hayashi, T., Iwakuma, M. & Funaki, K., Oct 15 2002, In : Physica C: Superconductivity and its applications. 382, 1, p. 122-126 5 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)