Design and test of HTS coils for resistive fault current limiter

This paper presents the design, manufacturing and test results of HTS coils for single-phase resistive current limiters using two different Bi-2223/Ag tapes. Two coils were separately wound on cylindrical G-10 tubes with helical path. One of the coil was wound in a bifilar conductor arrangement aimi...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2004-06, Vol.14 (2), p.863-866
Main Authors: Baldan, C.A., Shigue, C.Y., Pinatti, D.G., Ruppert-Filho, E., Freitas, R.C., Homrich, R.P.
Format: Article
Language:English
Subjects:
Alternating current
Applied sciences
Coils
Connection and protection apparatus
Current limiters
Direct current
ELECTRIC COILS
ELECTRICAL CONDUCTIVITY
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
Fault current limiters
High temperature superconductors
Loss measurement
Materials
MATHEMATICAL ANALYSIS
Power loss
Power measurement
Pulp manufacturing
Silver
Superconducting tapes
SUPERCONDUCTORS
TAPE
Testing
Various equipment and components
Voltage
Wounds
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Summary:This paper presents the design, manufacturing and test results of HTS coils for single-phase resistive current limiters using two different Bi-2223/Ag tapes. Two coils were separately wound on cylindrical G-10 tubes with helical path. One of the coil was wound in a bifilar conductor arrangement aiming at reducing the self-inductance. The maximum flux density is 40 mT on the HTS tape for both coils and the calculated inductance is 5.76/spl mu/H for the non-inductively wound coil and 28.3/spl mu/H for the conventional one. The two coils were individually tested under DC and AC currents. The DC power loss was calculated from the measured voltage-current values product and the AC power loss was determined by the liquid nitrogen mass boil-off measurement. The acquired voltage AC waveforms were analyzed through the separation of distinct contributions due to magnetic flux and to a resistive component in-phase with the current. It was observed an inflection point common to the DC and AC power losses curves close to I/sub c/ attributed to the AC transition current.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2004.830303