Effect of a superconducting coil as a fault current limiter on current density distribution in BSCCO tape after an over-current pulse

Tallouli, Mohamed; Shyshkin, Oleg; Yamaguchi, S.

doi:10.1088/1742-6596/871/1/012035

Cited by 2 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Others have used Hall probes to measure the field distribution across HTS conductors. For example, Tallouli and coworkers 11 , 12 , and references therein measured the perpendicular field profile over (Bi, Pb) 2 Sr 2 Ca 2 Cu 3 O 10 and YBa 2 Cu 3 O y tapes and deconvolved this (“the inverse problem”) to infer the differing current profiles for fast and slow transient excitation.…”

Section: Introductionmentioning

confidence: 99%

The onset of dissipation in high-temperature superconductors: magnetic hysteresis and field dependence

Talantsev

Strickland

Wimbush

et al. 2018

Sci Rep

View full text Add to dashboard Cite

Recently, we showed that the self-field transport critical current, Ic(sf), of a superconducting wire can be defined in a more fundamental way than the conventional (and arbitrary) electric field criterion, Ec = 1 μV/cm. We defined Ic(sf) as the threshold current, Ic,B, at which the perpendicular component of the local magnetic flux density, B⊥, measured at any point on the surface of a high-temperature superconducting tape abruptly crosses over from a non-linear to a linear dependence with increasing transport current. This effect results from the current distribution across the tape width progressively transitioning from non-uniform to uniform. The completion of this progressive transition was found to be singular. It coincides with the first discernible onset of dissipation and immediately precedes the formation of a measureable electric field. Here, we show that the same Ic,B definition of critical currents applies in the presence of an external applied magnetic field, Ba. In all experimental data presented here Ic,B is found to be significantly (10–30%) lower than Ic,E determined by the common electric field criterion of Ec = 1 µV/cm, and Ec to be up to 50 times lower at Ic,B than at Ic,E.

show abstract

Section: Introductionmentioning

confidence: 99%

The onset of dissipation in high-temperature superconductors: magnetic hysteresis and field dependence

Talantsev

Strickland

Wimbush

et al. 2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The DC characterization of a triangular-shaped, epoxy-impregnated HTS coil wound with a YBCO-coated conductor intended for use in an axial-flux HTS motor is presented, which provides a further step towards effective and efficient 3D modelling of superconducting devices for large-scale applications [16]. A series of experiments showed that the technique of SFCL has the effect to delete the pulse, while the current distribution is highly peaked at the centre without SFCL [17]. The ice impregnation technique of pulsed magnets was applied to HTS coils for the first time [18].…”

Section: Introductionmentioning

confidence: 99%

Research on DC overcurrent characteristics and life prediction of YBCO tapes

Yang

Feng

et al. 2021

Supercond. Sci. Technol.

View full text Add to dashboard Cite

The repeatability of superconducting DC limiters has not been introduced by other literature. Understanding the performance degradation characteristics of high-temperature superconducting (HTS) tapes under the overcurrent is of great significance for popularizing the application of a resistive-type DC superconducting fault current limiter. In this paper, the threshold experiment and repeated DC overcurrent experiment of HTS tape were carried out. With the critical current decay of the tapes under repeated DC overcurrent recorded, the current threshold under the DC overcurrent was obtained. And the performance degradation characteristics of the tapes under different repeated overcurrents were analysed, the resistance characteristics of the samples during different currents were compared. The results show that the DC overcurrent threshold of the copper-encapsulated second-generation (2G) YBCO tapes samples of Suzhou Advanced Materials Research Institute is 2.3/4 ms/3700 A. Under the repeated overcurrent, the performance degradation of the samples is abrupt, and the critical value is between 2.3/4 ms/3500 A and 2.3/4 ms/3550 A. The overcurrent has a limited influence on the magnitude of the resistance and will not affect the change trend of the resistance. The resistance at the falling edge of the current was greater than that at the rising edge of the current. The simulation was carried out by using COMSOL Multiphysics, and the simulation results matched the experimental results. The life prediction model of the samples was established and it was found that there is a custom equation relationship between the reliability of superconducting tapes and the number of the overcurrent, and the performance decline of this kind of samples is catastrophic.

show abstract

Effect of a superconducting coil as a fault current limiter on current density distribution in BSCCO tape after an over-current pulse

Cited by 2 publications

References 8 publications

The onset of dissipation in high-temperature superconductors: magnetic hysteresis and field dependence

The onset of dissipation in high-temperature superconductors: magnetic hysteresis and field dependence

Research on DC overcurrent characteristics and life prediction of YBCO tapes

Contact Info

Product

Resources

About