Numerical analysis of the mechanical and electrical properties of CORC cables under torsional loading

Yan, Jiangtao; Wang, Keyang; Gao, Yuanwen

doi:10.1016/j.cryogenics.2022.103624

Cited by 8 publications

(2 citation statements)

References 34 publications

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“…In addition, it has been demonstrated that CORC cables have excellent tensile properties that are superior to the tensile properties of the HTS tape itself [18][19][20][21][22]. By studying the torsional characteristics of CORC cables, it is found that reducing the gap of HTS tape and the Poisson's ratio of former can increase the strain limit of the tape in the cable under torsional load, and the two layer CORC cable has a smaller critical twisting angle than the single layer CORC cable [23,24].…”

Section: Introductionmentioning

confidence: 99%

Influence of HTS tape arrangement on the transverse compression performance of copper former CORC cables

Shi,

Ma,

Dai

et al. 2024

Supercond. Sci. Technol.

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CORC cables are subject to large transverse compression electromagnetic forces in fusion projects. Unfortunately, the electromagnetic force exceeding its critical transverse compression load will cause an irreversible decrease in its critical current. Therefore, it is particularly important to enhance the critical transverse compression load to ensure that the critical current does not decrease during operation. The winding method of HTS (High tempreture superconducting) tape on the central former is variable. So the experimental study on how to increase the critical transverse compression load of CORC cable by changing the winding method of HTS tape is carried out in this paper. Firstly, the influence law of parameters of the number of HTS tapes per layer and the number of HTS tape layers on their transverse compression performance are analysed independently. The results indicate that increasing the number of HTS tapes per layer and the number of HTS tape layers can both improve the transverse compression performance of CORC cables. Whereas, in the case of a cable with a certain critical current demand (the same total number of HTS tapes), increasing the number of HTS tape layers necessarily reduces the number of HTS tapes per layer. Therefore, in order to compare the degree of influence of the above two parameters, we conducted transverse compression experiments on multiple groups of CORC cables with different winding methods (more layers with few tapes per layer or few layers with more tapes per layer) under the same critical current demand. The results show that under the same critical current demand, choosing the winding method that reduces the number of HTS tape layers and increases the number HTS tapes per layer can effectively improve the transverse compression performance of CORC cables. A 3D multilayer CORC cable transverse compression finite element (FE) model is also established to explain the inherent reasons for the differences in transverse compression performance of CORC cables under different HTS tape winding methods.

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Section: Introductionmentioning

confidence: 99%

Influence of HTS tape arrangement on the transverse compression performance of copper former CORC cables

Shi,

Ma,

Dai

et al. 2024

Supercond. Sci. Technol.

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“…Recently, CORC cable has attracted the interest of numerous researchers due to its excellent electromagnetic and mechanical properties * Author to whom any correspondence should be addressed. [11,12]. The CORC cable can decrease the degradation of the critical current density with stress and strain and improve the current-carrying capacity [13,14].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of electromagnetic behavior in CORC cable based on a modified H−ϕ formulation

Shan

Wang²,

Yong³

et al. 2023

Supercond. Sci. Technol.

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AC losses have an important effect on the stable operation of high temperature superconductors (HTSs). The researchers have proposed many formulations to estimate the AC losses based on finite element method (FEM), such as T-A formulation, H formulation and H-Φ formulation. In order to simulate the complicated multi-layer conductor on round core (CORC) cable with transport current, the modified H-Φ formulation is proposed to calculate AC losses in complicated HTS structures in this paper. The formulation is verified by comparing the calculation results with the existing formulations and experiments, which is easy to be implemented and has faster computation speed. The electromagnetic behaviors of CORC cables and the helical coil wounded by a 3-layer CORC cable are investigated with the modified H-Φ formulation. The numerical results show the non-uniformity of the losses and currents in the different layers of CORC cable. What’s more, the effects of the external magnetic field on the distribution of the transport current are also discussed.

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Effect of Core Structure on the Mechanical and Electromagnetic Properties of High-Temperature Superconducting Cables

Yan,

Gao

2024

Acta Mech. Solida Sin.

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Numerical analysis of the mechanical and electrical properties of CORC cables under torsional loading

Cited by 8 publications

References 34 publications

Influence of HTS tape arrangement on the transverse compression performance of copper former CORC cables

Influence of HTS tape arrangement on the transverse compression performance of copper former CORC cables

Numerical simulations of electromagnetic behavior in CORC cable based on a modified H−ϕ formulation

Effect of Core Structure on the Mechanical and Electromagnetic Properties of High-Temperature Superconducting Cables

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