Testing of an Inductive Current-Limiting Device Based on High-Tc Superconductors

Victor Meerovich, Vladimir L. Sokolovsky, M. Slonim, Gennady E. Shter, Gideon S. Grader

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


An inductive current-limiting device based on transition of a superconductor to the normal state is investigated. The device has low impedance under normal conditions of the circuit to be protected, and a high impedance developed rapidly in a self-switching mode under fault conditions. A model of the device consisting of a copper coil and a high-temperature superconducting ring, coupled magnetically, was tested. It is shown that the transition of the ring to the normal state and its return to the superconducting state take place in a relatively smooth manner, and does not lead to overvoltages across circuit elements. On the other hand, the rate of impedance rise is sufficient to limit both the steady-state and transient components of fault current. The influence of thermal processes in the ring on transient responses in the circuit with the CLD is discussed. Some considerations for a full size design are also presented.

Original languageEnglish
Pages (from-to)3033-3036
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
StatePublished - 1 Jan 1993

ASJC Scopus subject areas

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


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