Two-Dimensional Anisotropic Model of YBCO Coated Conductors

Casali, Massimiliano; Breschi, Marco; Ribani, Pier Luigi

doi:10.1109/tasc.2014.2341180

Cited by 43 publications

(32 citation statements)

References 25 publications

(27 reference statements)

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“…Fig .8 shows voltage waveforms of hybrid superconductor at different locations under the thermal disturbance Q=64.53 J. By defining the ratio of the distance between measured locations to the time difference of voltage waveforms as quench propagation velocity (QPV) [11][12][13][14], QPV of NbTi/Cu is 26.7 mm/s measured experimentally under thermal disturbance Q=64.53 J at 5.8 K. Likewise, QPV of NbTi/Bi2223 hybrid superconductor is 3.2 mm/s measured in the same condition much smaller than that of NbTi/Cu.…”

Section: Experimental Results and Disscussionmentioning

confidence: 99%

Experimental Investigation on Quench Characteristics of NbTi/Bi2223 Hybrid Superconductor

Pi¹,

Shi

Dong

et al. 2015

Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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Quench characteristics of low temperature superconductor (LTS) and high temperature superconductor (HTS) hybrid superconductor made of NbTi/Cu wire and Bi2223/Ag tape are investigated experimentally. The results indicate: the minimum quench energy (MQE) of the hybrid conductor is much larger than NbTi/Cu; quench propagation velocity (QPV) and quench recovery time (QRT) are both less than NbTi/Cu. Those properties make the stability of the hybrid conductor better than NbTi/Cu, quench detection easier than Bi2223/Ag and operating current density greater than pure metal-stabilized superconductor. With advantages of high engineering current density and improvement of stability, the hybrid superconductor is expected to have some potential applications in large scale magnet and conductor-cooled magnets particularly.

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Section: Experimental Results and Disscussionmentioning

confidence: 99%

Experimental Investigation on Quench Characteristics of NbTi/Bi2223 Hybrid Superconductor

Pi¹,

Shi

Dong

et al. 2015

Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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“…However, AC losses in superconducting conductors are still a major problem for the development of these machines today. They are due to the AC currents flowing in the superconductor but also to the variable electromagnetic environment in a machine [24,25].…”

Section: Introductionmentioning

confidence: 99%

Implantation of Coated Superconducting Materials in the Synchronous Machine for Superconducting Energy Storage

Belkhiri¹,

Ghemari²,

Khene³

et al. 2022

JNMES

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Numerical tools appear to be essential for modeling and designing devices based on superconducting materials. In this article different simulation results are presented, using a computer code based on the finite element method adopted for the resolution of the electromagnetic equations, in the case of an axisymmetric two-dimensional problem, with this code we study the variations of the different electromagnetic quantities. The second generation superconductor has been modeled as an interesting diamagnetic material as inductive pulse sources. The performance in magnetic field resistance, energy storage and thermal stability of the ribbon, known as YBCO, makes it possible to broaden its field of application. Two categories of machines have been proposed and analyzed, the first is classic and the second uses a superconducting ribbon. In addition, a comparative study between the two proposed models is carried out and the results are analyzed and discussed.

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“…So quench behavior is a critical issue for the cable. The quench behavior of single REBCO tape in simulation has been investigated a lot in 2D anisotropic model [11] or 3D models (those models can be used for the high-aspect-ratio modeling issues of thin films) [12,13]. The quench behavior of conductors or cables mentioned above have been investigated, for e.g.…”

Section: Introductionmentioning

confidence: 99%

4D simulation of quench behavior in quasi-isotropic superconducting cable of stacked REBCO tapes considering thermal contact resistance

Liu

et al. 2020

Supercond. Sci. Technol.

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The quench characteristic is a critical issue for the application of superconducting cable. In order to study the process of the quench behavior in the cable accurately, a four-dimensional (4D) quench model for quasi-isotropic superconducting cable was developed and presented, in this paper. We first consider that the materials of the cable are in perfect thermal contact with the neighboring ones, and the radial temperature field and current redistribution at different time and different axial distances during the quench process are obtained. Then, thermal contact resistance (TCR) is considered. In addition, the minimum quench energy (MQE) and the quench propagation velocity (QPV) in axial direction of the two cases are investigated and compared. The results show that the maximum temperature of the heating area (T max ) is higher and QPVs are greater than the case without considering TCR. In addition, there is temperature gradient in the cross section of the cable. Finally we evaluate the sensitivity of thermal stability for the quasi-isotropic cable on the different values of TCR and positions where TCR is inserted. It is concluded that TCR among REBCO tapes has little effect on MQE and QPV of quasi-isotropic superconducting cable. The results are useful for the application of the quasi-isotropic superconducting cable immersed in liquid nitrogen, and this numerical model can also be used for simulating the quench process of other superconducting cables or conductors.

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Two-Dimensional Anisotropic Model of YBCO Coated Conductors

Cited by 43 publications

References 25 publications

Experimental Investigation on Quench Characteristics of NbTi/Bi2223 Hybrid Superconductor

Experimental Investigation on Quench Characteristics of NbTi/Bi2223 Hybrid Superconductor

Implantation of Coated Superconducting Materials in the Synchronous Machine for Superconducting Energy Storage

4D simulation of quench behavior in quasi-isotropic superconducting cable of stacked REBCO tapes considering thermal contact resistance

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