Study on the quench protection of YBCO coated conductor tape

Du, Ho-Ik; Yim, Seong-Woo; Han, Sang-Chul; Park, C.-R.; Han, Byoung-Sung

doi:10.1016/j.physc.2008.05.181

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…For a typical tape structure having stainless steel substrate and cupronickel in place of stabilizing copper, [7]. With average [8], and and given by averaging values for tape components, we get (with ). This is not as good as Nb-Ti and but much better than Bi-2223 and Bi-2212.…”

Section: ) Ybcomentioning

confidence: 99%

Scaling of Superconducting Switches for Extraction of Magnetic Energy

Ballarino

Taylor

2010

IEEE Trans. Appl. Supercond.

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Abstract-In certain cases it is necessary to extract the energy from a superconducting magnet when it quenches, in order to limit the heat generated by the event and thus prevent irreversible damage. This is usually achieved by opening a contact breaker across a resistor in the circuit feeding the magnet. For the heavy currents used to excite large magnets such switches incorporate sophisticated devices to limit arcing during the operation; the devices are reliable but are also bulky and expensive. It is interesting to consider the use of superconducting switches to perform this function, an important advantage being that they would be housed in the cryogenic environment of the magnet, and thus avoid permanent diversion of the current in and out of that environment to the mechanical switch (which operates at room temperature). However, practical switches for such an application are made up of superconductor in a metal matrix, and it is convenient to work with a relatively low resistance to approximate to the open circuit. This leads to scaling laws for superconducting switches for this application which relate the operating current and stored energy of the magnet system, the type of superconductor, and the necessary size of the device.

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Section: ) Ybcomentioning

confidence: 99%

Scaling of Superconducting Switches for Extraction of Magnetic Energy

Ballarino

Taylor

2010

IEEE Trans. Appl. Supercond.

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“…[1]- [5] Accordingly, it can be easily manufactured as a superconducting current-limiting device. A superconducting current-limiting device using a YBCO thin-film superconducting wire is manufactured in the form of a winding wire, and thus, the analysis of the current-limiting performance of a superconducting wire that is wound around a spiral former is a critical issue.…”

Section: Introductionmentioning

confidence: 99%

Study on Fault Current Limiting Characteristics of YBCO Thin-Film Superconducting Wire Wound on Different-Diameter Spiral Former

2015

IEEE Trans. Appl. Supercond.

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Windings are essential to the manufacture of a current limiting element using the YBCO thin film superconducting wire that has the form of a tape. Considering the results of the preceding study, the current limiting performance of the YBCO thin film superconducting wire seems to be influenced by the winding method and the radius of curvature of the wire. The radius of curvature of the YBCO thin film superconducting wire is an important factor of its current limiting performance and modularization. In this study, three YBCO thin film superconducting wires (two with copper and stainless steel stabilization layers, respectively, and one with no stabilization layer) with unique specific resistance characteristics were used to manufacture the current limiting element by winding them around spiral formers, which had a radius 25% greater than the minimum radius of curvature. The current limiting performances of such wires were examined according to the diameter of the spiral former at the 90, 180, and 250 K. To summarize the study results, the current limiting performance of the current limiting elements were influenced by the changes in the radius of curvature of the wires while fault currents were being applied.

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AC over-current characteristics of YBCO coated conductor with copper stabilizer layer considering insulation layer

Kim

et al. 2010

Physica C: Superconductivity and its Applications

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Study on the quench protection of YBCO coated conductor tape

Cited by 4 publications

References 3 publications

Scaling of Superconducting Switches for Extraction of Magnetic Energy

Scaling of Superconducting Switches for Extraction of Magnetic Energy

Study on Fault Current Limiting Characteristics of YBCO Thin-Film Superconducting Wire Wound on Different-Diameter Spiral Former

AC over-current characteristics of YBCO coated conductor with copper stabilizer layer considering insulation layer

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