Experimental Analysis on AC Loss and Fault Current Test of HTS Coils Co-Wound with Various Inserted Materials

Jinsub Kim, Seokho Nam, Haeryong Jeon, Junseong Kim, Jae Young Jang, Tae Kuk Ko

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8 Citations (Scopus)


A significant number of recent studies have explored the impact of many kinds of winding insulation conditions on high-temperature superconducting (HTS) coils for the application of electric devices. HTS coil co-wound with turn-to-turn inserted materials could be an appropriate alternative to the no-insulation coil because of the poor charge-discharge delay and unexpected quench behavior of the no-insulation coil. In addition, the co-wound HTS coil has good thermal stability and mechanical integrity, making it useful for superconducting applications such as superconducting magnetic energy storage (SMES) and superconducting fault current limiter (SFCL). However, studies of the co-wound HTS coil have explored dc electrical characteristics, but not ac electrical characteristics. Research into ac electrical characteristics is essential because of the operation sequence of the SMES and fault occurrence for the SFCL. In this paper, the ac electrical characteristics of HTS coils co-wound with various inserted materials were experimentally analyzed. Tested coils were co-wound with either Kapton, stainless steel, or copper tape at every turn of the winding, and one no-insulation coil served as a reference. AC loss, fault current, and recovery time were measured at 77 K, self-field.

Original languageEnglish
Article number7416632
JournalIEEE Transactions on Applied Superconductivity
Issue number4
Publication statusPublished - 2016 Jun

Bibliographical note

Funding Information:
This work was supported by the National R and D Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT and Future Planning under Grant NRF-2015M1A7A1A02050725.

Publisher Copyright:
© 2015 IEEE.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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