Application of Resistive Type SFCL to Protect Bi-2223/Ag Tape Against AC Over-Currents

Based on the electrical behavior of Bi-2223/Ag tape in transient state, the possibility of SFCL application was investigated as a fundamental study for the protection of HTS power apparatus. For the experiments, the Bi-2223/Ag tape having the critical current of 56 A and the resistive type SFCL fabr...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2006-06, Vol.16 (2), p.699-702
Main Authors: Seong-Woo Yim, Song-Ho Sohn, Si-Dole Hwang, Ok-Bae Hyun, Sung-Hun Lim, Kishio, K.
Format: Article
Language:English
Subjects:
Applied sciences
Bypasses
Circuits
COATINGS
Conductors
Critical current
DENSITY
Electric power generation
Electrical engineering. Electrical power engineering
ELECTRICITY
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Fault currents
High temperature superconductors
HTS wire
Materials
Power electronics, power supplies
Protection
Protective coatings
quench protection
RESISTORS
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
SFCL
SHUNTS
Silver
Superconducting devices
Superconducting tapes
Superconductivity
SUPERCONDUCTORS
switching power capacity
TAPE
Transistors
Voltage
Yttrium barium copper oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Based on the electrical behavior of Bi-2223/Ag tape in transient state, the possibility of SFCL application was investigated as a fundamental study for the protection of HTS power apparatus. For the experiments, the Bi-2223/Ag tape having the critical current of 56 A and the resistive type SFCL fabricated using three elements of YBCO thin films were examined. When the applied current exceeds the rated current of the SFCL, the current was limited to sufficiently low level, however, higher than 40 Vrms was not allowed considering power density of SFCL. On the other hand, as a method to increase the power density, a shunt resister across the SFCL was adopted to increase the allowed power density. In this case, the results showed that the over current was limited below the safe range for HTS tape and the SFCL was safe, although 100 V rms was applied to the circuit. In conclusion, the switching power capacity of a SFCL could be increased by using a shunt resistor, and HTS tape could be protected safely within the quench margin
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2006.871265