Saturated Core Fault Current Limiters in a Live Grid

Y. Nikulshin, Y. Wolfus, A. Friedman, Y. Yeshurun, V. Rozenshtein, D. Landwer, U. Garbi

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


With two recent successful installations in a U.K. live grid, the saturated core fault current limiter (SCFCL) has become one of the leading candidates for commercial fault current limiting devices. In this work, we review the concept developed at Bar-Ilan University, which was later adapted by GridON, for a novel compact SCFCL. This SCFCL utilizes a superposition of a closed dc magnetic circuit and an open ac magnetic circuit to overcome the intrinsic problem of transformer coupling found in traditional SCFCL designs. It also allows the use of a single magnetic core for a full ac current cycle limiting. In addition, the relatively short path for the dc magnetic circuit supports copper coils as an alternative to superconducting bias coils, allowing easier market penetration. The performances of the SFCL devices installed in live grids are described.

Original languageEnglish
Article number7397955
JournalIEEE Transactions on Applied Superconductivity
Issue number3
StatePublished - 15 Apr 2016

Bibliographical note

Publisher Copyright:
© 2016 IEEE.


  • Fault current limiter
  • magnetic cores
  • smart grid


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