Geonjun Lee, Byeong-Joo Kim, Miyeon Yoon, Sang Ho Park, Ji-Kwang Lee, Kyeongdal Choi, Woo-Seok Kim
언어
한국어(KOR)
URL
https://www.earticle.net/Article/A494006
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4,000원
원문정보
초록
영어
A Straight-CORC hybrid high-temperature superconducting (HTS) cable combining a straight stacked conductor and an outer Conductor on Round Core (CORC) structure was fabricated and its magnetization loss characteristics were experimentally investigated. The hybrid cable was constructed using a straight stack of 20 REBCO coated conductors as an inner core, an enamel-braided-wire reinforcement layer, a Nomex flattening layer, and outer CORC winding layers. Hybrid samples with two, four, and six CORC layers were prepared, together with CORC-only samples having the same outer winding configurations. Magnetization losses were measured using a linked pick-up coil system under an externally applied AC magnetic field. In addition, the hybrid samples were rotated with respect to the applied magnetic field to investigate the angular dependence of the inner stacked conductor. The CORC-only samples showed a decrease in magnetization loss density with increasing winding layers due to magnetic screening effect. The Straight-CORC hybrid sample with two CORC layers exhibited relatively small angular dependence and lower magnetization loss density than the corresponding CORC-only samples. The magnetization loss density of the hybrid conductors was reduced by 75.09% compared with that of the CORC conductors under the same CORC-layer conditions. These results demonstrate the feasibility of the Straight-CORC hybrid configuration for increasing superconducting tape utilization while maintaining low magnetization loss characteristics.
목차
Abstract 1. 서론 2. 측정 방법 3. Straight-CORC 하이브리드 시편 제작 4. 실험 결과 및 분석 4.1. CORC 권선층 수에 따른 자화손실 특성 4.2. 회전각에 따른 하이브리드 시편의 자화손실 특성 4.3. CORC 단독 시편과 Straight-CORC 하이브리드 시편 비교 5. 결론 ACKNOWLEDGMENT REFERENCES