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

doi:10.1109/77.234837

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

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

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

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 language	English
Pages (from-to)	3033-3036
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	3
Issue number	3
DOIs	https://doi.org/10.1109/77.234837
State	Published - 1 Jan 1993

ASJC Scopus subject areas

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

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title = "Testing of an Inductive Current-Limiting Device Based on High-Tc Superconductors",

abstract = "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.",

author = "Victor Meerovich and Sokolovsky, {Vladimir L.} and M. Slonim and Shter, {Gennady E.} and Grader, {Gideon S.}",

note = "Funding Information: Manuscript received November 3, 1992; revised February 25, 1993. The authors would like to thank the Ministry of Science and Technology of Israel for their support through grants 3482-2-92 and 3884-1-91, and the Technion Crown Center for Superconductivity. V. Meerovich, V. L. Sokolovsky, and M. Slonim are with the Ben-Gu-rion University of the Negev, Beer-Sheva, Israel. G. E. Shter and G. S. Grader are with Technion, Haifa, Israel. IEEE Log Number 9210501.",

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AU - Shter, Gennady E.

AU - Grader, Gideon S.

N1 - Funding Information: Manuscript received November 3, 1992; revised February 25, 1993. The authors would like to thank the Ministry of Science and Technology of Israel for their support through grants 3482-2-92 and 3884-1-91, and the Technion Crown Center for Superconductivity. V. Meerovich, V. L. Sokolovsky, and M. Slonim are with the Ben-Gu-rion University of the Negev, Beer-Sheva, Israel. G. E. Shter and G. S. Grader are with Technion, Haifa, Israel. IEEE Log Number 9210501.

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N2 - 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.

AB - 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.

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

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