• 2255 Citations
  • 21 h-Index
1987 …2019

Research output per year

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Research Output

1987

Current distribution in a moving spot flux pump

Mawardi, O. K. & Ko, T. K., 1987 Jan 1, In : IEEE Transactions on Magnetics. 23, 2, p. 584-586 3 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)
1989

Parametric Representation of a Superconducting High-Current Generator

Ko, T. K. & Mawardi, O. K., 1989 Sep, In : IEEE Transactions on Magnetics. 25, 5, p. 4346-4349 4 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)
1995
5 Citations (Scopus)
1996
9 Citations (Scopus)

The analysis of the temperature characteristics of the superconducting winding in the case of fast quench

Lee, S. J., Oh, Y. S. & Ko, T. K., 1996 Jan 1, In : Applied Superconductivity. 4, 1-2, p. 53-60 8 p.

Research output: Contribution to journalArticle

The evolution of quenches in superconducting parallel bifilar winding by fault current

Lee, S. J. & Ko, T. K., 1996 Dec 1, In : IEEE Transactions on Applied Superconductivity. 6, 2, p. 57-61 5 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
1997

Novel design and operational characteristics of inductive high-Tc superconducting fault current limiter

Joo, M. & Ko, T. K., 1997 Dec 1, In : IEEE Transactions on Applied Superconductivity. 7, 2 PART 1, p. 1005-1008 4 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Quench evolution of YBCO ring based on weak link model

Joo, M., Lee, C. J. & Ko, T. K., 1997 Dec 1, In : IEEE Transactions on Applied Superconductivity. 7, 2 PART 1, p. 195-198 4 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

The analysis of the temperature distribution with respect to heat generation on Nb sheet in the superconducting fluxpump

Oh, Y., Song, M. & Ko, T. K., 1997 Dec 1, In : IEEE Transactions on Applied Superconductivity. 7, 2 PART 1, p. 676-679 4 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
6 Citations (Scopus)
1999

Analysis of the operational characteristics of a heater-trigger type high-Tc superconducting power supply

Yoon, Y. S., Lee, S. J., Kim, H. M. & Ko, T. K., 1999 Dec 1, In : IEEE Transactions on Applied Superconductivity. 9, 4, p. 4708-4714 7 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
1 Citation (Scopus)

Dynamic performance and design of a high-Tc superconducting synchronous motor

Joo, M. & Ko, T. K., 1999 Dec 1, In : IEEE Transactions on Applied Superconductivity. 9, 2 PART 1, p. 1245-1248 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Improvement on current limiting performance of current limiting devices with damping coils

Joo, M. & Ko, T. K., 1999 Jan 1, In : IEEE Transactions on Applied Superconductivity. 9, 3, p. 4613-4618 6 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

The design, manufacture and characteristic experiment of a small-scaled high-Tc superconducting synchronous motor

Song, M., Yoon, Y. S., Jang, W. K., Ko, T., Hong, G. W. & Jang, I. B., 1999 Dec 1, In : IEEE Transactions on Applied Superconductivity. 9, 2 PART 1, p. 1241-1244 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

The response characteristics of cowound voltage sensors in cable-in-conduit conductor

Chu, Y., Kim, H. M., Ko, T. K. & Kim, K. M., 1999 Dec 1, In : IEEE Transactions on Applied Superconductivity. 9, 2 PART 1, p. 1157-1160 4 p.

Research output: Contribution to journalArticle

2000

AC loss measurement of Bi-2223 conductors

Jang, M. H., Chu, Y., Ko, T. K., Oh, S. S. & Joo, J. H., 2000 Jan 1, In : Physica C: Superconductivity and its Applications. 341-348 (IV), p. 2575-2576 2 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

A design and tests ot hts power cables and feasibility study of hts power transmission system in KOREA

Clio, J., Seong, K. C., Ryu, K. S. & Ko, T. K., 2000 Jan 1, In : IEEE Transactions on Applied Superconductivity. 10, 1, 1 p.

Research output: Contribution to journalConference article

Characteristic analysis of the flux damper located in HTS synchronous motor through 3-dimensional magnetic field analysis using F.E.M.

Song, M. K., Lee, S. J., Yoon, Y. S. & Ko, T. K., 2000 Nov 1, In : Physica C: Superconductivity and its applications. 341-348, p. IV/-

Research output: Contribution to journalConference article

4 Citations (Scopus)

Design, fabrication and testing of a heatertrigged hightc superconducting power supply

Yoon, Y. S., Lee, S. J., Han, T. S., Kirn, H., Lee, C. Y., Chu, Y. & Ko, T. K., 2000 Mar 1, In : IEEE Transactions on Applied Superconductivity. 10, 1, 1 p.

Research output: Contribution to journalArticle

Design, fabrication and testing of a heater-trigged high-Tc superconducting power supply

Yoon, Y. S., Lee, S. J., Han, T. S., Kim, H. M., Lee, C. Y., Chu, Y. & Ko, T. K., 2000 Jan 1, In : IEEE Transactions on Applied Superconductivity. 10, 1, p. 1418-1421 4 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

Design and characteristic analysis of active quench protection system for superconducting magnet

Chu, Y., Kim, H. M., Jang, M. H., Kim, K. M. & Ko, T. K., 2000 Nov, In : Physica C: Superconductivity and its applications. 341-348 (IV), p. 2605-2606 2 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Design and tests of HTS power cables and feasibility study of HTS power transmission system in Korea

Cho, J., Seong, K. C., Ryu, K. S. & Ko, T. K., 2000 Jan 1, In : IEEE Transactions on Applied Superconductivity. 10, 1, p. 1150-1153 4 p.

Research output: Contribution to journalConference article

16 Citations (Scopus)

KSTAR project: An advanced steady state superconducting tokamak experiment

Lee, G. S., Kim, J., Hwang, S. M., Chang, C. S., Chang, H. Y., Cho, M. H., Choi, B. H., Kim, K., Cho, K. W., Cho, S., Choh, K. K., Choi, C. H., Choi, J. H., Choi, J. W., Choi, I. S., Do, C. J., Ha, T. H., Han, J. H., Hong, J. S., Hong, K. H. & 115 others, Hur, N. I., Hwang, I. S., Im, K. H., Jhang, H. G., Jung, Y. S., Kim, B. C., Kim, D. L., Kim, G. H., Kim, H. S., Kim, J. S., Kim, J. Y., Kim, W. C., Kim, Y. S., Kwon, K. H., Kyum, M. C., Lee, B. J., Lee, D. K., Lee, H. G., Lee, J. M., Lee, S. G., Na, H. G., Oh, Y. K., Park, J. H., Ri, H. C., Ryoo, Y. S., Song, K. Y., Yang, H. L., Yang, J. G., Yoo, B. J., Yoo, S. J., Yoon, N. S., Yoon, S. B., You, G. H., You, K. I., Choe, W., Choi, D. I., Jeong, S. G., Lee, D. Y., Bae, Y. S., Kang, H. S., Kim, G. N., Ko, I. S., Namkung, W., Oh, J. S., Bae, Y. D., Cho, Y. S., Hong, B. G., Hong, G., Hwang, C. K., In, S. R., Ju, M. H., Lee, H. J., Oh, B. H., Yoon, B. J., Baang, S., Choi, H. J., Hwang, J., Kim, M. G., Kim, Y. J., Lee, S. I., Yee, J., Yoon, C. S., Chung, K. H., Hong, S. H., Hwang, Y. S., Kim, S. H., Kim, Y. H., Chung, K. H., Lim, J. Y., Ha, D. W., Oh, S. S., Ryu, K. S., Wang, Q. L., Ko, T. K., Joo, J., Suh, S., Choi, C. H., Lee, J. H., Lee, Y. W., Shin, H. S., Song, I. H., Baek, J., Han, I. Y., Koh, Y., Park, P. Y., Ryu, C., Cho, J. J., Hwang, D. M., Kim, Y. S., Schmidt, J. A., Park, H. K., Neilson, G. H., Reiersen, W. T., Simmons, R. T., Bernabei, S., Dahlgren, F., Grisham, L. R., Jardin, S. C., Kessel, C. E., Manickam, J., Medley, S. S., Pomphrey, N., Sinnis, J. C., Brown, T. G., White, R. B., Young, K. M., Schultz, J., Wang, P. W., Sevier, L., Carter, M. D., Ryan, P. M., Swain, D. W., Hill, D. N., Nevins, W. M. & Braams, B. J., 2000 Jan 1, In : Nuclear Fusion. 40, SPEC. ISS. 3, p. 575-582 8 p.

Research output: Contribution to journalArticle

144 Citations (Scopus)

Stability analysis of race track type Ag/Bi-2223 of the high-Tc superconducting synchronous motor

Song, M. K., Lee, S. J., Yoon, Y. S. & Ko, T. K., 2000 Jan 1, In : Physica C: Superconductivity and its Applications. 341-348 (IV), p. 2639-2640 2 p.

Research output: Contribution to journalConference article

2001

Analysis of the operational characteristics of a high-Tc superconducting power supply with the Bi-2223 pancake load

Yoon, Y. S., Kim, H. M., Ahn, M. C., Lee, C., Ko, T. K. & Oh, S. S., 2001 Jan 1, In : IEEE Transactions on Applied Superconductivity. 11, 3, p. 4071-4077 7 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Analysis of the operational characteristics of discrete-sheet type low-Tc superconducting power supply

Kim, H. M., Yoon, Y. S., Ahn, M. C., Chu, Y., Lee, S. J., Han, T. S., Oh, S. S. & Ko, T. K., 2001 Mar 1, In : IEEE Transactions on Applied Superconductivity. 11, 1 II, p. 2339-2342 4 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

Design, fabrication and test of a discrete-foil-type superconducting power supply

Kim, H. M., Lee, C., Ko, T. K., Yoon, Y. S., Lee, S. J., Han, T. S. & Oh, S. S., 2001 Jan 1, In : Cryogenics. 41, 3, p. 189-194 6 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Design and characteristic analysis of a rod type high-Tc superconducting fault current limiter through electromagnetic analysis

Lee, C., Lee, S., Hyun, O. B. & Ko, T. K., 2001 Mar 1, In : IEEE Transactions on Applied Superconductivity. 11, 1 II, p. 2102-2105 4 p.

Research output: Contribution to journalConference article

9 Citations (Scopus)

Experimental investigation to overcome the ramp-rate limitation of CICC superconducting magnets

Jeong, S., Kim, S. & Ko, T. K., 2001 Mar 1, In : IEEE Transactions on Applied Superconductivity. 11, 1 II, p. 1689-1692 4 p.

Research output: Contribution to journalConference article

2 Citations (Scopus)

Fabrication and characterization of microstructural evolution and properties of twisted Bi(Pb)-Sr-Ca-Cu-O superconductor tape

Lim, J. H., Joo, J., Kim, J. G., Nah, W., Jang, M., Ko, T., Lee, S. J., Ha, H. S., Oh, S. S. & Kwon, Y. K., 2001 Mar 1, In : IEEE Transactions on Applied Superconductivity. 11, 1 III, p. 2796-2799 4 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

Stability analysis of a power system with superconducting fault current limiter installed

Lee, S., Lee, C., Ko, T. K. & Hyun, O., 2001 Jan 1, In : IEEE Transactions on Applied Superconductivity. 11, 1 II, p. 2098-2101 4 p.

Research output: Contribution to journalConference article

38 Citations (Scopus)

The experimental study of AC loss dependency on joint method in BSCCO-2223 tape

Kang, H., Kim, J. H., Hwangbo, H., Joo, J., Nah, W., Jang, M., Kim, H. M., Yoon, Y. S., Oh, S. S., Ryu, K. S. & Ko, T. K., 2001 Mar 1, In : IEEE Transactions on Applied Superconductivity. 11, 1 II, p. 2216-2219 4 p.

Research output: Contribution to journalConference article

4 Citations (Scopus)
2002

A study on the efficiency of low-Tc superconducting power supply considering the series-parallel connections of superconducting circuits

Ahn, M. C., Yoon, Y. S., Kim, H. M., Han, T. S., Lee, S. G. & Ko, T. K., 2002 Mar 1, In : IEEE Transactions on Applied Superconductivity. 12, 1, p. 804-807 4 p.

Research output: Contribution to journalConference article

3 Citations (Scopus)

A variation of impedance of a high-Tc superconducting fault current limiter with an open core

Lee, C., Kim, H. M., Kang, H., Kim, T. J., Ko, T. K., Lee, E. R., Lee, S. & Yoon, K. Y., 2002 Mar 1, In : IEEE Transactions on Applied Superconductivity. 12, 1, p. 846-849 4 p.

Research output: Contribution to journalConference article

9 Citations (Scopus)

Design, fabrication and testing of a high-Tc superconducting power supply with the Bi-2223 load

Kim, H. M., Yoon, Y. S., Ahn, M. C., Ko, T. K., Lee, S. J. & Han, T. S., 2002 Mar 1, In : IEEE Transactions on Applied Superconductivity. 12, 1, p. 837-841 5 p.

Research output: Contribution to journalConference article

2 Citations (Scopus)

Test of DC reactor type fault current limiter using SMES magnet for optimal design

Lee, E. R., Lee, S., Lee, C., Suh, H. J., Bae, D. K., Kim, H. M., Yoon, Y. S. & Ko, T. K., 2002 Mar 1, In : IEEE Transactions on Applied Superconductivity. 12, 1, p. 850-853 4 p.

Research output: Contribution to journalConference article

16 Citations (Scopus)

The short circuit analysis of integrated three phase superconducting fault current limiter with two phase superconducting circuits

Lee, S., Lee, E. R., Lee, C., Choi, S. J. & Ko, T. K., 2002 Jan 1, In : IEEE Transactions on Applied Superconductivity. 12, 1, p. 854-858 5 p.

Research output: Contribution to journalConference article

4 Citations (Scopus)
2003

Characteristic analysis of a heater-triggered switching system for the charging of Bi-2223 double-pancake load

Bae, D. K., Yoon, Y. S., Ahn, M. C., Ha, H. S., Ko, T. K. & Oh, S. S., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 II, p. 2227-2230 4 p.

Research output: Contribution to journalConference article

3 Citations (Scopus)

Characteristics of critical current of high-Tc superconducting magnets wound with various tensions

Ahn, M. C., Kim, M. C., Bae, D. K., Lee, S., Yoon, Y. S., Lee, S. J. & Ko, T. K., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 II, p. 2080-2083 4 p.

Research output: Contribution to journalConference article

5 Citations (Scopus)

Characteristics of critical current of superconducting solenoid wound with the stacked tape

Ahn, M. C., Lee, S., Kim, M. C., Bae, D. K., Lee, C., Joo, M. & Ko, T. K., 2003 Oct 1, In : Cryogenics. 43, 10-11, p. 555-560 6 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Design, fabrication and testing of superconducting dc reactor for 1.2 kV/80 A inductive fault current limiter

Kang, H., Ahn, M. C., Kim, Y. K., Bae, D. K., Yoon, Y. S., Ko, T. K., Kim, J. H. & Joo, J., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 II, p. 2008-2011 4 p.

Research output: Contribution to journalConference article

14 Citations (Scopus)

Design, fabrication techniques and test results of 1.2 kV/80 A inductive fault current limiter by using conduction-cooled system

Kang, H., Lee, S., Bae, D. K., Ahn, M. C. & Ko, T. K., 2003 Oct 1, In : Cryogenics. 43, 10-11, p. 621-628 8 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Design and test of modified bridge type superconducting fault current limiter with reverse magnetized core

Lee, S., Lee, C., Ahn, M. C., Kang, H., Bae, D. K. & Ko, T. K., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 II, p. 2016-2019 4 p.

Research output: Contribution to journalConference article

12 Citations (Scopus)

Determination of equivalent circuit parameters of the low-Tc superconducting power supply for charging of superconducting magnet

Yoon, Y. S., Ahn, M. C., Kim, H. M. & Ko, T. K., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 II, p. 2222-2226 5 p.

Research output: Contribution to journalConference article

2 Citations (Scopus)

Electrical degradation of a high-Tc superconductor continuous current transport

Bae, D. K., Lee, S. J., Bae, J. H., Sim, K. D., Park, K. Y. & Ko, T. K., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 III, p. 2949-2952 4 p.

Research output: Contribution to journalConference article

5 Citations (Scopus)

Measurement of joint properties of Bi(Pb)-Sr-Ca-Cu-O (2223) tapes by field decay technique

Kim, J. H., Kim, K. T., Jang, S. H., Joo, J., Choi, S., Nah, W., Kang, H., Ko, T. K., Ha, H. S., Oh, S. S., Ryu, K. S. & Nash, P., 2003 Jun 1, In : IEEE Transactions on Applied Superconductivity. 13, 2 III, p. 2992-2995 4 p.

Research output: Contribution to journalConference article

8 Citations (Scopus)

Patterned pyroelectric electron emitters and their feasibility study for lithography applications

Moon, C. W., Kim, D. W., Rosenman, G., Ko, T. K. & Yoo, I. K., 2003 Jun 1, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 42, 6 A, p. 3523-3525 3 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Present Status of the KSTAR Superconducting Magnet System Development

Kim, K., Park, H. K., Park, K. R., Lim, B. S., Lee, S. I., Kim, M. K., Chu, Y., Chung, W. H., Baek, S. H., Choi, J. Y., Yonekawa, H., Chertovskikh, A., Chang, Y. B., Kim, J. S., Kim, C. S., Kim, D. J., Song, N. H., Kim, K. P., Song, Y. J., Woo, I. S. & 8 others, Han, W. S., Lee, D. K., Song, D. W., Park, J. S., Lee, G. S., Lee, H. J., Ko, T. K. & Lee, S. J., 2003 Oct 17, In : IEEE International Conference on Plasma Science. 1 p.

Research output: Contribution to journalConference article

2004

Characteristic analysis of solid materials for electrical insulation of HTS magnets

Bae, D. K., Joung, J. M., Baek, S. M., Lee, C. J., Lee, S. J., Ko, T. K. & Kim, S. H., 2004 Jun 1, In : IEEE Transactions on Applied Superconductivity. 14, 2, p. 1189-1193 5 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)