IEEE Transactions on Applied Superconductivity · 2008 · 13 citations · 2 references
Natural SciencesElectrical EngineeringPhysicsElectromagneticsElectromagnetismElectronic MaterialsElectric CircuitsSuperconducting MaterialsCuprate SuperconductorsHigh-temperature SuperconductivityHigh-temperature SuperconductorsShort-circuit CurrentSuperconducting Cable DesignSuperconducting PropertiesSuperconducting TapesTransient Stability
YBCO tapes are expected to be used in future high temperature superconductor (HTS) applications as they have better J <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> characteristics at high temperatures and in high magnetic fields. For power applications such as transmission cables, YBCO tapes and a copper former are connected in parallel and they might be subjected to a short-circuit fault current that is 10 to 30 times the normal operating current. Therefore, the over-current behavior, including the hot-spot and the distribution of transport current between the copper-laminated YBCO tapes and the copper former, is very important to examine the stability and feasibility of the cable. This paper describes the experimental results for over-current pulses of a 1-m single-layer cable fabricated with five copper-laminated YBCO tapes and a copper former. Further, we performed numerical simulations by using a newly developed computer program based on the 3D finite element method.
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