Strain Characteristic of A Toroidal HTS-SMES Fabricated by YBCO Stacked–Tape Cables

Liu, Hongwei; Song, Guosheng; Feng, Wengang; Qiu, Ming; Zhu, Jiahui; Rao, Shuangquan

doi:10.1109/tasc.2017.2662599

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…So, we need a new SMES system with kA-level current capacity to meet the application requirements of this kind of conditions. Some institutes have also conducted the SMES system development based on HTS cable, such as YBCO stacked-tape cables and Bi2212 Rutherford cable [10][11][12][13]. China Electric Power Research Institute has designed a 3 MJ SMES with twisted stacked-tape in tube based on YBCO tape, the double pancake (DP) coil of which can realize 650 A critical current at 77 K with liquid nitrogen forced flow cooling method [10].…”

Section: Introductionmentioning

confidence: 99%

“…Toshiba Corporation has developed high energy-density HTS-low temperature superconducting (LTS) 'hybrid' SMES system and the HTS coil is DP winding type with Bi-2212 Rutherford cable operating at 4.2 K [11]. The operating current of the Bi-2212 DP coil is 2068 A. Hongwei Liu from Key Laboratory of HV and EMC Beijing designed the toroidal HTS-SMES based on stacked-tape cables [13]. The maximum operating current is 3.3 kA at 30 K and the inductance is 0.57 H. This is still in the conceptual design stage and has not yet begun engineering verification.…”

Section: Introductionmentioning

confidence: 99%

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Research on a novel HTS double pancake coil based on CORC: used for kA-level SMES of accelerator

Li¹,

Zheng²,

Sheng³

et al. 2022

Supercond. Sci. Technol.

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Large-scale complex needs high performance SMES system with 5 kA-level current carrying and kA/s current ramping rate (such as particle accelerator complex), the inductance of which should be as small as possible (<<1H) to reduce the terminal voltage and realize ideal energy evacuation. This paper introduces the world’s first application of double pancake (DP) coil with CORC cable, which can be a unit of MJ-level SMES system with a total inductance of 125 mH and 4 kA current carrying (@30 K, 4 T). The combination of low inductance and high current capacity guarantee the safety during kA/s operating condition. The CORC wound with highly anisotropic YBCO tape can realize quasi-isotropy with critical properties. The performance of the CORC with 11 layers and 3 tapes in each layer has been fully validated with excitation test at 77 K and the critical current can reach 2906 A@ 77 K, self-field. The skeleton of the DP coil is specially designed with semi-circular spiral groove and the climbing-layer area is supported by two symmetrical blocks, which can provide reasonable support to the CORC cable. The measured critical current of DP coil can realize 1750 A at 77 K (theoretical value is 1800 A). It means that the the coil winding method is feasible to avoid performance degradation during winding. The DP coil based on CORC cable is fully suitable for the SMES system which needs to realize ~4 kA current carrying and fast energy conversion. It also provides a good practice for the engineering application of CORC cable.

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