Journal
CRYOGENICS
Volume 89, Issue -, Pages 141-146Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cryogenics.2017.12.003
Keywords
Critical current; Rotating flux pump; Elliptical winding; HTS coated conductor
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Funding
- National Research Foundation of Korea (NRF) grant - Korea government (MSIP), Republic of Korea [2016R1A2B4007324, 2017R1A2B3012208]
- National Research Foundation of Korea [2016R1A2B4007324, 2017R1A2B3012208, 21A20130012366] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A rotating HTS flux pump is used to study the charging characteristics of superconducting synchronous motor. In order to design the rotating flux pump, the elliptical winding is essential. Numerous studies have been conducted on the degradation of the critical current with respect to the bending condition of the second generation (2G) high-temperature superconducting (HTS) tape. These studies focused on the same radius of curvature depending on the bending position. Therefore, in this paper, the critical current in a HTS coated conductor (CC) considering the curvature of elliptical shape is measured with regard to nine mandrels. These are a tall prolate ellipsoid, oblate ellipsoid and semicircle. In the tall prolate ellipsoid, the degradation of the critical current was the least. The diameters of each shape are 20, 30 and 40 mm, respectively. Finally, the experimental observations have been compared with the theoretical predictions.
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