[KSCI] Korea Science Citation Index Service

Pumping-up Current Characteristics of Linear Type Magnetic Flux Pump

Chung, Yoondo (Dept. of Electrical Engineering, Kyoto Univeristy)
Muta, Itsuya (Dept. of Electrical Engineering, Kyoto University)
Hoshino, Tsutomu (Dept. of Electrical Engineering, Kyoto University)
Nakamura, Taketsune (Dept. of Electrical Engineering, Kyoto University)
Ko, Taekuk (Dept. of Electrical Engineering, Yonsei University)

Publication Information

Progress in Superconductivity and Cryogenics / v.6, no.2, 2004 , pp. 29-34 More about this Journal

Abstract

The linear type flux pump aims to compensate a little bit decremental persistent current of the HTS magnet in NMR and MRI spectrometers. The flux pump mainly consists of DC bias coil, 3-phase AC coil and Nb foil. The persistent current in closed superconductive circuit can be easily adjusted by the 3-phase AC current, its frequency and the DC bias current. In the experiment, it has been investigated that the flux pump can effectively charge the current in the load coil of 543 mH for various frequencies in 18 minutes under the DC bias of 10 A and the AC of 5 $A_{rms}$ . The maximum magnitudes of pumping current and load magnet voltage are 0.72 A/min and 20 ㎷, respectively. Based on simulation results by the FEM are proved to nearly agree with experimental ones.

Keywords

linear type magnetic flux pump; NMR magnet system; persistent current compensator;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)

Reference
Cited By KSCI

1	Design fabrication and test of a discrete-foil-type superconducting power supply / [ H.M.Kim;C.J.Lee;T.K.Ko;Y.S.Yoon;S.J.Lee;T.S.Han;S.S.Oh ] / Cryogenics DOI ScienceOn
2	Experiment of flux pump for high Temperature superconductor insert coils of NMR magnets / [ S.K.Jeong ] / Journal of the Korea Institute of Applied Superconductivity and Cryogenics 과학기술학회마을
3	Microampere flux pump for superconducting NMR magnets Part 1 : basic concept and microtesla flux measurement / [ Y.Iwasa ] / Cryogenics DOI ScienceOn
4	A high-temperature superconducting double-pancake insert for an NMR magnet / [ H.G.Lee;J.Bascunan;Y.Iwasa ] / IEEE Trans. Appl. Superconduct. DOI ScienceOn
5	Superconducting rectifier flux pump for magnet system of the CMD-2 detector / [ L.M.Barkov;N.S.Bashtovoy;V.S.Karpov;A.A.Ruban;V.P.Amakhtin;I.G.Snopkov;I.V.Zhuravkov ] / IEEE Trans. Appl. Superconduct.
6	Study on brushless superconducting generator excited by magnetic flux pump / [ H.Tsukiji ] / Ph.D. dissertation, Kyoto University
7	Magnetic field distributions of a linear type magnetic flux pump to compensate a little decremented persistent current of HTS magnets for NMR using FEM / [ Y.D.Chung;I.Muta;T.Nakamura;T.Hoshino ] / 2003 National Convention IEE Japan
8	Current injection for field decay compensation in NMR spectrometer magnet / [ W.Denis Markiewick ] / IEEE Trans. Appl. Superconduct. DOI ScienceOn
9	Fully superconducting rectifiers and flux pumps / [ L.J.M van de Klundert;H.H.J. ten Kate ] / Cryogenics DOI ScienceOn
10	Preparatory FEM analysis of a linear type magnetic flux pump for compensating a little decremented persistent current of HTS magnets / [ Y.D.Chung;I.Muta;T.Nakamura;T.Hoshino ] / 2002 Kansai-Section Joint Convention of Institutes of Electrical Eng. Japan
11	Experimental-model of a flux pump / [ V.V.Vasiliev;V.N.Isaykin;O.D.Kanzyuba;V.G.Kozrezov;V.A.Kulagin;A.A.Markov;V.D.Raev;A.N.Romanv;B.Y.Serebryakov;N.A.Sysoev;A.A.Forostenko;V.Y.Pakhomov;E.B.Klimova ] / Cryogenics DOI ScienceOn
12	The design manufacture and characteristic experiment of a superconducting excitation coil / [ J.Bae;Y.Oh;S.Lee;T.K.Ko ] / IEEE Trans. Appl. Superconduct.