Evaluation of AC losses in cable conductors using thin superconducting tapes with non-uniform Jc distribution

Inada, Ryoji; Nakamura, Yūichi; Oota, Akio

doi:10.1016/j.physc.2006.04.099

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…2 Because superconducting cables contain multiple superconducting wires, the electromagnetic interaction among those wires must be taken into account. Numerical calculation of ac losses of superconducting cables has been extensively reported, [3][4][5][6][7][8][9][10][11] but no analytical investigation has been reported to date.…”

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confidence: 99%

Hysteretic ac loss of polygonally arranged superconducting strips carrying ac transport current

Mawatari

Komori

2008

Applied Physics Letters

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The hysteretic ac loss of a current-carrying conductor in which multiple superconducting strips are polygonally arranged around a cylindrical former is theoretically investigated as a model of superconducting cables. Using the critical state model, we analytically derive the ac loss Qn of a total of n strips. The normalized loss Qn/Q1 is determined by the number of strips n and the ratio of the strip width 2w to the diameter 2R of the cylindrical former. When n ≫ 1 and w/R ≪ 1, the behavior of Qn is similar to that of an infinite array of coplanar strips.

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confidence: 99%

Hysteretic ac loss of polygonally arranged superconducting strips carrying ac transport current

Mawatari

Komori

2008

Applied Physics Letters

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“…As shown in several works [36,37], the width of the gaps between individual tapes is an important parameter for determining the magnetic flux distribution and thus the critical current and the AC loss of the cable. With a reduction of the gap size, the performance of the cable generally increases.…”

Section: Cable Geometrymentioning

confidence: 99%

Critical current and AC loss analysis of a superconducting power transmission cable with ferromagnetic diverters

Vojenčiak

Šouc

Gömöry

2011

Supercond. Sci. Technol.

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Superconducting transmission cables are important for increasing the capability of electricity networks. We analysed monolayer power transmission cable based on high-temperature superconductors, and we propose a new way to improve its performance in this paper. We studied two important parameters of this cable—critical current and AC loss. For the former parameter, the dependence of the critical current density on the local magnetic field is very important. For the latter parameter, the direction of the magnetic field penetration also has a substantial influence. We propose placing ferromagnetic diverters above the gaps between individual superconducting tapes. Ferromagnetic components placed in this position influenced both the critical current density and the AC loss in the superconductor in a positive way. We used a numerical model for magnetic field analysis, and we also prepared a 0.5 m long sample of the cable for experimentation. Our experimental results confirmed the correctness of the basic idea. The critical current of the cable was increased by 14%. However, the AC loss measurement showed differences between the experiment and the calculation.

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Kim Model of Transport ac Loss with Position Dependent Critical Current Density in a Superconducting Cylinder

Zhao¹,

He²

2010

J Low Temp Phys

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Evaluation of AC losses in cable conductors using thin superconducting tapes with non-uniform Jc distribution

Cited by 7 publications

References 13 publications

Hysteretic ac loss of polygonally arranged superconducting strips carrying ac transport current

Hysteretic ac loss of polygonally arranged superconducting strips carrying ac transport current

Critical current and AC loss analysis of a superconducting power transmission cable with ferromagnetic diverters

Kim Model of Transport ac Loss with Position Dependent Critical Current Density in a Superconducting Cylinder

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