DI-BSCCO wire with<i>I</i><sub>c</sub>over 200 A at 77 K

Ayai, N.; Kato, Takeshi; Fujikami, J.; Kobayashi, Shinichi; Kikuchi, Masashi; Yamazaki, Kohei; Yamade, S.; Ishida, Tatsuhiro; Tatamidani, Kazuaki; Hayashi, Kazuhiko; Sato, K.; Hata, Ryosuke; Kitaguchi, Hitoshi; Kumakura, Hiroaki; Osamura, Kōzō; Shimoyama, Jun–ichi

doi:10.1088/1742-6596/97/1/012112

Cited by 26 publications

(14 citation statements)

References 2 publications

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“…Although the critical current (I c ) above 150 A and the length of km-class are enough for the prototype configuration such as cables and transformers [1], their AC losses are still too large for the practical applications. The large loss generation in an AC external magnetic field is mainly attributed to strong electromagnetic coupling among the filaments [1][2][3]. The interfilamentary coupling is caused by the low resistivity of Ag-matrix and physical connection between the filaments by bridging.…”

Section: Introductionmentioning

confidence: 99%

AC Loss Reduction in Bi2223 Tapes with Interfilamentary Oxide Barriers

Inada

Mitsuno

Baba

et al. 2009

Trans. Mat. Res. Soc. Japan

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We fabricated twisted Bi2223 tapes with interfilamentary oxide barriers and evaluated their AC loss properties in an AC perpendicular magnetic field. The conventional powder-in-tube method was used for tape fabrication. In order to avoid the side effect on Bi2223 phase formation, SrZrO 3 was selected for barrier materials. In addition, 20wt% Bi2212 was mixed with SrZrO 3 to improve its ductility for cold working. Monocore Ag-sheathed rods were dip-coated by the oxide barriers with slurry before stacking with multifilamentary structures. By applying both the tight twisting with twist pitch length below 10 mm and introducing SrZrO 3 + Bi2212 barriers, the coupling frequency in a perpendicular field was increased above 100 Hz and perpendicular field losses were reduced from the analytical prediction for fully coupled filaments around power-grid frequency range.

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Section: Introductionmentioning

confidence: 99%

AC Loss Reduction in Bi2223 Tapes with Interfilamentary Oxide Barriers

Inada

Mitsuno

Baba

et al. 2009

Trans. Mat. Res. Soc. Japan

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“…Although the critical current above 150 A and the length of km-class are enough for the prototype configuration such as cables and transformers [1], their AC losses are still too high for the practical applications. The large loss generation in an AC external magnetic field is mainly attributed to strong electromagnetic coupling among the filaments.…”

Section: Introductionmentioning

confidence: 99%

Reduction of AC Losses in Bi-2223 Tapes by Introducing Interfilamentary Oxide Barriers

Inada

Mitsuno

Soguchi

et al. 2009

IEEE Trans. Appl. Supercond.

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AC loss reduction in Bi-2223 tapes is one of the key issues for the realization of power cables and transformers. The large loss generation is mainly attributed to the strong electromagnetic coupling between the filaments in AC external magnetic field. In this paper, we fabricated twisted Bi-2223 tapes with interfilamentary oxide barrier and evaluate their AC loss properties. To suppress the side effect on Bi-2223 phase formation during sintering, Ca 2 CuO 3 or SrZrO 3 powders were used as barrier materials.Furthermore, small amounts of Bi-2212 powders were mixed with them to improve their ductility for cold working. AC loss characteristics were examined at 77 K in parallel and perpendicular transverse magnetic fields with various field amplitudes and frequencies.The effect of introducing different oxide barriers on AC loss reduction at different operating condition is discussed.

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“…The Dynamically Innovative BSCCO tape produced by Sumitomo superconducting wire produced by Sumitomo is considered in order to carry out the design of the magnet. This high-performance wire consists of a multifilamentary BSCCO tape produced by means of the Sumitomo proprietary Controlled Over Pressure (CT-OP) sintering process and reinforced by means of stainless steel in order to improve the mechanical properties [17], [18]. The performances of the wire, as deduced from [17] and [18], are summarized in Table I.…”

Section: Design and Cooling Of The Superconducting Coilmentioning

confidence: 99%

“…This high-performance wire consists of a multifilamentary BSCCO tape produced by means of the Sumitomo proprietary Controlled Over Pressure (CT-OP) sintering process and reinforced by means of stainless steel in order to improve the mechanical properties [17], [18]. The performances of the wire, as deduced from [17] and [18], are summarized in Table I. Both the maximum tensile stress and the minimum bending radius reported refer to the 95% I c retention.…”

Section: Design and Cooling Of The Superconducting Coilmentioning

confidence: 99%

Feasibility of Superconducting Magnetic Energy Storage on Board of Ground Vehicles With Present State-of-the-Art Superconductors

Morandi

Trevisani

Negrini

et al. 2012

IEEE Trans. Appl. Supercond.

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Liquid storage of gaseous fuel on board of vehicles as possible alternative to high-pressure storage is receiving an increasing attention because of the higher mileage, the lower cost of the tank, and the faster refill allowable. The research effort devoted to liquid storage is also boosting the advance of cryogenics on board of vehicles, thus opening the way to the synergic use of superconductors. In such a context, superconducting magnetic energy storage (SMES) for regenerative braking may represent a possible alternative to electrochemical batteries or to developing technologies such as supercapacitors or flywheels. In this paper, the feasibility of SMES for regenerative braking on board of hybrid vehicles with cryogenic fuel tank is investigated. Possible application scenarios are discussed. The design of the superconducting magnet based on commercially available superconducting tapes and the cooling are addressed. The performance of the power control system is also investigated by means of a MATLAB/ Simulink simulation model. Index Terms-Dynamically Innovative BSCCO tape produced by Sumitomo, electric vehicles, hybrid vehicles, hydrogen vehicle, interior permanent magnet (IPM) motor control, regenerative braking, superconducting magnetic energy storage (SMES).

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DI-BSCCO wire withI_cover 200 A at 77 K

Cited by 26 publications

References 2 publications

AC Loss Reduction in Bi2223 Tapes with Interfilamentary Oxide Barriers

AC Loss Reduction in Bi2223 Tapes with Interfilamentary Oxide Barriers

Reduction of AC Losses in Bi-2223 Tapes by Introducing Interfilamentary Oxide Barriers

Feasibility of Superconducting Magnetic Energy Storage on Board of Ground Vehicles With Present State-of-the-Art Superconductors

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DI-BSCCO wire withIcover 200 A at 77 K

Cited by 26 publications

References 2 publications

AC Loss Reduction in Bi2223 Tapes with Interfilamentary Oxide Barriers

AC Loss Reduction in Bi2223 Tapes with Interfilamentary Oxide Barriers

Reduction of AC Losses in Bi-2223 Tapes by Introducing Interfilamentary Oxide Barriers

Feasibility of Superconducting Magnetic Energy Storage on Board of Ground Vehicles With Present State-of-the-Art Superconductors

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DI-BSCCO wire withI_cover 200 A at 77 K