Critical current behavior of a BSCCO tape in the stacked conductors under different current feeding mode

Sun, Jwo‐Shiun; Watanabe, Hirofumi; Hamabe, M.; Yamamoto, Norimasa; Kawahara, Toshio; Yamaguchi, S.

doi:10.1016/j.physc.2013.04.031

Cited by 12 publications

(10 citation statements)

References 11 publications

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“…Dependence of the critical current on the neighboring current is different for the stacked conductor covered with or without FMs. When the current of the same direction (↑↑↑) is applied to each tape, the critical current declines without FMs, which is similar with the previous report [4]. However, the critical current is improved by covering the edges of the stacked conductor by FMs as in Figures 7 and 8.…”

Section: Resultssupporting

confidence: 87%

“…The latter would significantly affect the performance of HTS tapes in the stacked conductor. In a previous study, the critical current of BSCCO tape in the three-layer stacked conductors is dependent on current feeding mode [4]. With the opposite-direction current applied to each tape in the three-layer stacked conductors, the critical current of middle tape increases sharply by 50% due to the effects on self-field from the currents in the neighboring tapes compared to that of single one.…”

Section: Introductionmentioning

confidence: 90%

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Experimental Study on Ferromagnetic Shunt Effects on the Critical Current of BSCCO Tape in Stacked Conductors

Sun

Ohara

Yamaguchi

2017

Advances in Condensed Matter Physics

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In the 200 m high temperature superconducting (HTS) cable test facility at Chubu University constructed in 2010, a three-layer structure of the tapes in the cable is employed for obtaining the high current capacity up to 2 kA. Previous study shows that the critical current is affected by the layout of the tapes such as gaps and the current feeding mode. In the stacked tape conductors, the critical current of BSCCO tapes shows strong dependence on the current feeding directions between the tapes. The critical current is improved when the opposite-direction current is applied to them and degraded for the same-direction current feeding mode because of strong magnetic field interaction between them from the transport current in each tape. This paper presents the measurements of the critical currents of a BSCCO tape in the stacked conductors with the ferromagnetic materials. By using the ferromagnetic materials surrounding the tapes, self-field of HTS tapes is affected and their critical currents are improved by more than 10%. Ferromagnetic shunt effects on the critical current of HTS tape are reported through the magnetic field analysis.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 90%

Experimental Study on Ferromagnetic Shunt Effects on the Critical Current of BSCCO Tape in Stacked Conductors

Sun

Ohara

Yamaguchi

2017

Advances in Condensed Matter Physics

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“…However, such a phenomenon cannot be demonstrated without considering the self-field influence as discussed in this study. Furthermore, the variation orders were reasonable compared with the experimental report [5]. Therefore, we believe that this numerical code can be used for the quantitative estimation of the current capacity of an assembled conductor and for the optimal design for it.…”

Section: Analysis For Current Capacities Of Assembled Conductorssupporting

confidence: 63%

“…For example, remarkable improvement or suppression of critical current of Bi-2223 tape has been reported depending on the arrangement of the tapes [4], [5]. To discuss these phenomena, we firstly need to clarify how the critical current of a tape is determined under the condition of self-field.…”

Section: Introductionmentioning

confidence: 99%

Influence of Internal Magnetic Field Distribution on Critical Currents in a Single and Assembled Bi-2223 Tapes

Furukawa

Higashikawa

Imado

et al. 2015

IEEE Trans. Appl. Supercond.

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We have investigated the influence of self-field on the critical current density distribution in a Bi-2223 tape and its effect on the current capacity of an assembled conductor. Critical current of a tape is usually measured by four-probe transport method under self-field. On the other hand, the critical current of an assembled conductor cannot be simply summed because the tape experiences different condition of magnetic field due to the interaction among the tapes. To quantify the situation, it is necessary to clarify first how the critical current of a tape is determined at the self-field and then to consider the interaction among the tapes. In this study, it was found that the distribution of critical current density was largely influenced by local magnetic field inside the tape. The results were quantitatively described by a model considering the position dependence and magnetic field dependence of local critical current density. Using such a quantitative model, we numerically investigated the current capacities of assembled conductors with different arrangements of the tapes.

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“…However, after assembling HTS tapes in the cable, the excited transport current produces the magnetic field throughout the cable [7,8]. As for increasing electric energy consumption around the world, the high current-carrying capacity is needed for the power cable applications and finally straightens the magnetization of HTS tape in the cable.…”

Section: Introductionmentioning

confidence: 99%

Residual magnetic field profiles and their current density profiles of coated conductors for fast and slow cut-off current operations

Sun

Tallouli²,

Shyshkin³

et al. 2015

Progress in Superconductivity and Cryogenics

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Critical current behavior of a BSCCO tape in the stacked conductors under different current feeding mode

Cited by 12 publications

References 11 publications

Experimental Study on Ferromagnetic Shunt Effects on the Critical Current of BSCCO Tape in Stacked Conductors

Experimental Study on Ferromagnetic Shunt Effects on the Critical Current of BSCCO Tape in Stacked Conductors

Influence of Internal Magnetic Field Distribution on Critical Currents in a Single and Assembled Bi-2223 Tapes

Residual magnetic field profiles and their current density profiles of coated conductors for fast and slow cut-off current operations

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