Mechanical Response of Conductor on Round Core (CORC) Cables Under Electromagnetic Force

Wu, Junfeng; Liu, Donghui; Zhang, Xingyi; Yong, Huadong

doi:10.1007/s10338-023-00388-x

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…The details of pitch and angle are shown in table 1. A recent report showed that for CORC conductors under a magnetic field (6 T to 16 T), the larger the gap in the cross-section of the conductor, the greater the maximum stress it experiences in the magnetic field, which poses a risk of critical current attenuation to the conductor [36]. A densely wound coil can minimize the gap in the cross-section of the CORC and improve the stability of the conductor.…”

Section: In-situ Winding Technologymentioning

confidence: 99%

HTS conductor coil by in-situ winding technology for large-scale high-field magnet

Gao,

Shi,

Yang

et al. 2023

Supercond. Sci. Technol.

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High temperature superconducting (HTS) conductors have become important candidates to be used in large-scale high-field magnets, owing to its high critical current density as well as good mechanical properties. At present, there are various forms of HTS conductors proposed. In this work, we reported the fabrication of the REBCO HTS coil using in-situ winding technology. The six-layer coil with a diameter of 410 mm achieved a total current of 2562 A, and generated a central magnetic field of 7.8 mT at 77 K. The stress, deformation, and defect caused during conventional winding procedure could be significantly decreased using in-situ winding technology, indicating it has great potential for the large-scale high-field magnets in next-generation fusion reactors.

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Section: In-situ Winding Technologymentioning

confidence: 99%

HTS conductor coil by in-situ winding technology for large-scale high-field magnet

Gao,

Shi,

Yang

et al. 2023

Supercond. Sci. Technol.

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show abstract

“…As a result, the cable will withstand a huge transverse compression electromagnetic force of hundreds of kN/m during operation. Under the enormous transverse compression electromagnetic force, once the strain of the HTS tape in the cable exceeds the critical value, its current carrying capacity will be irreversibly decreased, which seriously affects the stability of the magnet operation [27][28][29][30]. Therefore, the transverse compression mechanical performance of CORC cables is one of its most important properties.…”

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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Integrated multi-scale approach combining global homogenization and local refinement for multi-field analysis of high-temperature superconducting composite magnets

Guo,

Gao,

Wang

2024

Appl. Math. Mech.-Engl. Ed.

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Mechanical Response of Conductor on Round Core (CORC) Cables Under Electromagnetic Force

Cited by 4 publications

References 31 publications

HTS conductor coil by in-situ winding technology for large-scale high-field magnet

HTS conductor coil by in-situ winding technology for large-scale high-field magnet

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

Integrated multi-scale approach combining global homogenization and local refinement for multi-field analysis of high-temperature superconducting composite magnets

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