DC V-I characteristics of a HTS tape for a 600kJ SMES in an Oblique external magnetic field

Kim, H J; Baik, S.K.; Seong, K.C.; Li, Zhuyong; Ma, Y.H.; Ryu, K.

doi:10.1088/1742-6596/153/1/012018

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…Secondly, the complex current distribution leads to a loss of symmetry in the study problem [18]. Experiments indicates that it is not accurate to estimate the electromangetic response of superconductingwires by only considering parallel component or perpendicular component of oblique magnetic field [19,20]. Similar findings can be found in [21][22][23][24].…”

Section: Introductionmentioning

confidence: 78%

Fast time-varying current triggering flux jumps of multi-filamentary Nb₃Sn wire exposed to oblique magnetic field

Li¹,

Xue²

2023

Phys. Scr.

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Due to the oblique magnetic field and rapid time-varying current, the electromagnetic response and thermomagnetic instabilities of high-field superconducting dipole magnets are quite different from the solenoid coils. In this work, we theoretically investigate the flux jump of composite multi-filamentary Nb3Sn wire with high critical current density exposed to an oblique magnetic field and fast transport current. The thermomagnetic stability/instability regions are obtained with respect to flux creep factor and oblique ratios of magnetic field. It is found that the parallel component of the oblique magnetic field can suppress the flux jump. Unlike slow current, it is interesting to find that the fast variations of self-field by high ramp current can trigger flux jumps in Nb3Sn wire. The fast current triggering flux jumps can be tuned by the static oblique magnetic field. Furthermore, we demonstrate that current-like distribution is more likely to trigger quenches, while the magnetic field-like distribution is more likely to trigger flux jumps. The findings of this work are helpful for the optimization of the superconducting coils exposed to oblique magnetic field and fast time-varying current.

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Section: Introductionmentioning

confidence: 78%

Fast time-varying current triggering flux jumps of multi-filamentary Nb₃Sn wire exposed to oblique magnetic field

Li¹,

Xue²

2023

Phys. Scr.

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“…8 presents the calculated magnetic field distribution of the coil with the iron core at the critical current, 84 A. Through the magnetic field analysis, the inductance with the core is 42.4 mH, which is calculated from (2)- (5). Similarly, the calculated inductance without the iron core is 7.02 mH.…”

Section: Resultsmentioning

confidence: 99%

“…Generally, the critical current of superconducting coils is definitive by the one of the wire with the minimum critical current density [5]. This is because that once a point of the coil is quenched, the voltage of the whole coil will increase to the critical value quickly due to the voltage of the quench point.…”

Section: Numerical Modelmentioning

confidence: 99%

Influence of Iron Core on Critical Current and Inductance of an HTS Double Pancake Coil

Yin

Zhao

et al. 2018

MATEC Web Conf.

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In a high temperature superconducting (HTS) DC induction heater, an HTS coil and an iron core are essential to generate DC magnetic field and form the magnetic circuit. To understand effect of the iron core on the critical current and the inductance of the HTS coil, we prepared a double pancake coil (DPC) and an iron core in this study, and measured the critical current and inductance of the DPC. The experimental results were compared with the numerically calculated ones as well. The measured critical currents of the DPC without and with the iron core are 89 A and 84 A, respectively. Thus, the iron core does affect the critical current. Moreover, the measured inductances are 6.94 mH and 45 mH. The measured data of the critical currents and the inductances are in good agreement with the calculated results.

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A Numerical Study on AC Losses of a Double Layer Polygonal BSCCO Conductor by Finite Element Method

Ryu

et al. 2014

J Supercond Nov Magn

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DC V-I characteristics of a HTS tape for a 600kJ SMES in an Oblique external magnetic field

Cited by 4 publications

References 3 publications

Fast time-varying current triggering flux jumps of multi-filamentary Nb₃Sn wire exposed to oblique magnetic field

Fast time-varying current triggering flux jumps of multi-filamentary Nb₃Sn wire exposed to oblique magnetic field

Influence of Iron Core on Critical Current and Inductance of an HTS Double Pancake Coil

A Numerical Study on AC Losses of a Double Layer Polygonal BSCCO Conductor by Finite Element Method

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DC V-I characteristics of a HTS tape for a 600kJ SMES in an Oblique external magnetic field

Cited by 4 publications

References 3 publications

Fast time-varying current triggering flux jumps of multi-filamentary Nb3Sn wire exposed to oblique magnetic field

Fast time-varying current triggering flux jumps of multi-filamentary Nb3Sn wire exposed to oblique magnetic field

Influence of Iron Core on Critical Current and Inductance of an HTS Double Pancake Coil

A Numerical Study on AC Losses of a Double Layer Polygonal BSCCO Conductor by Finite Element Method

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Product

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Fast time-varying current triggering flux jumps of multi-filamentary Nb₃Sn wire exposed to oblique magnetic field

Fast time-varying current triggering flux jumps of multi-filamentary Nb₃Sn wire exposed to oblique magnetic field