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Quench Protection Characteristics of Coil Wound of Bi/Ag-Sheathed Wire
- Source :
- IEEE Transactions on Applied Superconductivity. 25:1-4
- Publication Year :
- 2015
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2015.
-
Abstract
- The most probable cause of quenches of a coil wound of Bi/Ag-sheathed wires is the appearance of a long resistive zone caused by the temperature rise of the long part of the conductor due to, for example, ac losses and the malfunction of the cryogenic system. Protection characteristics of quenches by this cause are experimentally and analytically investigated. In the experiment, the operating temperature of a coil wound of a Bi/Ag-sheathed wire is gradually increased until the resistive voltage of the coil exceeds a given threshold to start a quench dump sequence. Damages in the test coils are examined by changing the decay time constant of the coil current. Based on those results, conditions to protect coils from damages are investigated. Analysis is conducted to simulate quench events, and conditions for quench protection are obtained. The analytical results well explain the quench behaviors of the test coils.
- Subjects :
- Resistive touchscreen
Materials science
Cryogenic system
High Energy Physics::Lattice
Physics::Medical Physics
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
Conductor
Decay time
Operating temperature
Electromagnetic coil
Electrical and Electronic Engineering
Current (fluid)
Composite material
Voltage
Subjects
Details
- ISSN :
- 15582515 and 10518223
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Applied Superconductivity
- Accession number :
- edsair.doi...........ce9fb048248a04234857b1651394fdc6
- Full Text :
- https://doi.org/10.1109/tasc.2014.2367731