NDLI: Limitation of DC currents by YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//-Au superconducting films

Content Provider	IEEE Xplore Digital Library
Author	Villard, C. Peroz, C. Guinand, B. Tixador, P.
Copyright Year	2002
Abstract	The limitation of dc fault currents is one of the issues for the development of dc networks or links. This paper shows for the first time the high potential of YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//-Au bilayers for the design of dc current limiters. Such devices are based on the transition into the normal state of the superconducting YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// films above a current I/sup />I/sub c/, where I/sub c/ is the critical current at the onset of dissipation. The study of the transition under current pulses shows that a thermally driven transition into the normal state can occur after a delay t/sub trans/. This duration is defined by the amplitude of the current pulse. For I/sup //spl ap/3I/sub c/, this delay is less than 10 /spl mu/s. The abrupt transition into the normal state allows an efficient current limitation. A recovery of the superconducting state can also occur under current. This property can be extremely interesting for autonomous operation of a current limiter in an electrical network in case of transient over-currents coming from the starting of high-power devices.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	11
Ending Page	16
Page Count	6
File Size	404633
File Format	PDF
ISSN	10518223
Volume Number	15
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting films Current limiters Critical current Delay Superconductivity Yttrium barium copper oxide Cryogenics Fault currents Superconducting thin films YBCO Limiter superconductors thin films
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Superconducting Fault Current Limiter Design Using Parallel-Connected YBCO Thin Films

Study on the Quench Current of YBCO Thin Film FCL

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Test of a 1 kA superconducting fault current limiter for DC applications

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Fault Current Limiter Using YBCO Coated Conductor—The Limiting Factor and Its Recovery Time

Recovery in Superconducting Fault Current Limiters at Low Applied Voltages

Limitation of DC currents by YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//-Au superconducting films

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