Search Results - "DONG KEUN PARK"

Study on a Series Resistive SFCL to Improve Power System Transient Stability: Modeling, Simulation, and Experimental Verification by Byung Chul Sung, Byung Chul Sung, Dong Keun Park, Dong Keun Park, Jung-Wook Park, Jung-Wook Park, Tae Kuk Ko, Tae Kuk Ko

“…This paper presents a study to determine the optimal resistive value of a superconducting fault-current limiter (SFCL) for enhancing the transient stability of…”
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YBCO and Bi2223 Coils for High Field LTS/HTS NMR Magnets: HTS-HTS Joint Resistivity by Youngjae Kim, Bascunan, J., Lecrevisse, T., Hahn, S., Voccio, J., Dong Keun Park, Iwasa, Y.

“…This paper presents our latest experimental results on high-temperature superconducting (HTS) splice joints for HTS insert coils made of YBCO and Bi2223, that…”
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Persistent-mode high-temperature superconductor shim coils: A design concept and experimental results of a prototype Z1 high-temperature superconductor shim by Iwasa, Yukikazu, Hahn, Seungyong, Voccio, John, Keun Park, Dong, Kim, Youngjae, Bascuñán, Juan

“…Design, fabrication, and test results of a type persistent-mode high-temperature superconductor (HTS) shim coil are presented. A prototype Z1 rectangle-loop…”
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HTS Pancake Coils Without Turn-to-Turn Insulation by Seungyong Hahn, Dong Keun Park, Bascunan, J, Iwasa, Y

“…This paper reports a study of HTS pancake coils without turn-to-turn insulation. Three no-insulation (NI) pancake coils were wound: each single and double…”
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No-insulation multi-width winding technique for high temperature superconducting magnet by Hahn, Seungyong, Kim, Youngjae, Keun Park, Dong, Kim, Kwangmin, Voccio, John P, Bascuñán, Juan, Iwasa, Yukikazu

“…We present a ) winding technique for an HTS (high temperature superconductor) magnet consisting of double-pancake (DP) coils. The NI enables an HTS magnet…”
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Field Performance of an Optimized Stack of YBCO Square "Annuli" for a Compact NMR Magnet by Seungyong Hahn, Voccio, J, Bermond, S, Dong-Keun Park, Bascuñan, J, Seok-Beom Kim, Masaru, T, Iwasa, Y

“…The spatial field homogeneity and time stability of a trapped field generated by a stack of YBCO square plates with a center hole (square "annuli") was…”
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No-Insulation (NI) HTS Inserts for >1 GHz LTS/HTS NMR Magnets by Seungyong Hahn, Dong Keun Park, Voccio, J., Bascunan, J., Iwasa, Y.

“…A no-insulation (NI) technique has been applied to wind and test a NI HTS (YBCO) double-pancake coil at 4.2 K. Having little detrimental effect on…”
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No-Insulation Coil Under Time-Varying Condition: Magnetic Coupling With External Coil by Seungyong Hahn, Youngjae Kim, Jiayin Ling, Voccio, J., Dong Keun Park, Bascunan, J., Hyun-Jin Shin, Haigun Lee, Iwasa, Y.

“…This paper presents experimental and analytical studies on the time-varying behavior of an NI (no-insulation) high-temperature superconductor pancake coil,…”
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No-Insulation (NI) Winding Technique for Premature-Quench-Free NbTi MRI Magnets by Seungyong Hahn, Dong Keun Park, Kwangmin Kim, Bascunan, J., Iwasa, Y.

“…This paper describes and discusses a No-Insulation (NI) winding technique that, based on experiment results of two test NbTi coils, promises to significantly…”
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Experimental Analysis of Charging Characteristics of HTS Field Coils With HTS Contactless Rotary Excitation Device Considering Various HTS Loads by Lee, Jeyull, Jeon, Haeryong, Han, Seunghak, Kim, Ji Hyung, Hyeon, Chang Ju, Kim, Ho Min, Ko, Tae Kuk, Park, Dong Keun, Yoon, Yong Soo

“…In this paper, the charging characteristics of high-Tc superconducting (HTS) field coils are analyzed experimentally to verify the efficiency of using HTS…”
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A 1.3-GHz LTS/HTS NMR Magnet- A Progress Report by Bascunan, J, Seungyong Hahn, Dong Keun Park, Iwasa, Y

“…In this paper we present details of a 600 MHz HTS insert (H600) double pancake (DP) windings. It will first be operated in the bore of a 500 MHz LTS magnet,…”
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MgB2 for MRI Magnets: Test Coils and Superconducting Joints Results by DONG KEUN PARK, JIAYIN LING, RINDFLEISCH, Matt, VOCCIO, John, HAHN, Seungyong, BASCUNAN, Juan, TOMSIC, Michael, IWASA, Yukikazu

“…Among key design and operation issues for MgB 2 relevant to MRI magnets are: uniformity of current-carrying capacity over long lengths (>2 km) of wire; and…”
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The short-circuit characteristics of a DC reactor type superconducting fault current limiter with fault detection and signal control of the power converter by Min Cheol Ahn, Kang, H., Duck Kweon Bae, Dong Keun Park, Yong Soo Yoon, Sang Jin Lee, Tae Kuk Ko

“…In general case of DC reactor type superconducting fault current limiter (SFCL), a fault current gradually increases during the fault. It takes above 5 cycles…”
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An Analysis and Short Circuit Test of Various Types of Bi-2223 Bifilar Winding Fault Current Limiting Module by Dong Keun Park, Min Cheol Ahn, Seiwoong Park, Kang, H., Duck Kweon Bae, Seong Eun Yang, Bok-Yeol Seok, Tae Kuk Ko

“…This paper deals with feasibility of fault current limiter (FCL) by using Bi-2223 high temperature superconducting (HTS) wire. The FCL using HTS wire has some…”
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Study on Optimal Location of a Resistive SFCL Applied to an Electric Power Grid by Sung, Byung Chul, Park, Dong Keun, Park, Jung-Wook, Ko, Tae Kuk

“…This paper describes a study on the optimal location of a resistive superconducting fault current limiter (SFCL) applied to an electric power grid. The…”
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Characteristics of a HTS Persistent Current Switch System Considering the n-Value by Yong Soo Yoon, Ho Min Kim, Kang, H., Duck Kweon Bae, Min Cheol Ahn, Seong Eun Yang, Dong Keun Park, Tae Kuk Ko

“…This paper deals with characteristics of a High-Tc superconductor (HTS) persistent current switch (PCS) system considering the n-value. I also present its…”
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On the 600 MHz HTS Insert for a 1.3 GHz NMR Magnet by Bascunan, J., Seungyong Hahn, Dong Keun Park, Youngjae Kim, Iwasa, Y.

“…We update here on the status of one of the main components of a 1.3 GHz NMR magnet currently being developed at the MIT Francis Bitter Magnet Laboratory…”
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Active Protection of an MgB2 Test Coil by DONG KEUN PARK, HAHN, Seungyong, BASCUNAN, Juan, IWASA, Yukikazu

“…This paper presents results of a study, experimental and computational, of a detect-and-activate-the-heater protection technique applied to a magnesium…”
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Design and Manufacture of a Superconducting Fault Current Limiter With Bypass Reactor by Employing Two Different Types of HTS Wires by Min Cheol Ahn, Duck Kweon Bae, Seong Eun Yang, Dong Keun Park, Tae Kuk Ko, Kang, H., Yong Soo Yoon, Bok-Yeol Seok, Sim, K.

“…A resistive superconducting fault current limiter (SFCL) using Bi2223 wire and YBCO coated conductor has been developed. The SFCL has two coils; one is a…”
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Field performance of a prototype compact YBCO “annulus” magnet for micro-NMR spectroscopy by Gagnon, Blair, Hahn, Seungyong, Park, Dong Keun, Voccio, John, Kim, Kwangmin, Bascuñán, Juan, Iwasa, Yukikazu

“…► Construction details of a compact annulus magnet (YP1070) were reported. ► This is the first report of the YP1070 operation in a bath of liquid helium at…”
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