Abstract
The superconducting magnets have a large inductance as well as high operating current. Therefore, mega-joule scale energy can be stored in the magnet. The energy stored in the magnet is sufficient to damage the magnet when a quench occurs. Quench heater and dump resistor can be used to protect the magnet. However, using quench heater to create quench resistors through heat transfer can be slower than instantly switching resistors. Also, electrical short, overheating and breakdown can occur due to quench heater. Moreover, the number of dump resistor should be limited to avoid large terminal voltage. Therefore, in this paper, we propose a quench protection method for extracting the energy stored in a magnet by charging and discharging energy through a capacitor switching without increasing resistance. The simulation results show that the proposed system has a faster current decay within the allowable voltage level.
| Original language | English |
|---|---|
| Pages (from-to) | 49-53 |
| Number of pages | 5 |
| Journal | Progress in Superconductivity and Cryogenics (PSAC) |
| Volume | 19 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2017 Sep 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
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Energy extraction system using dual-capacitor switching for quench protection of HTS magnet. / Choi, Yojong; Lee, Woo Seung; Song, Seunghyun; Jeon, Haeryong; Kang, Hyoungku; Ko, Tae Kuk.
In: Progress in Superconductivity and Cryogenics (PSAC), Vol. 19, No. 3, 01.09.2017, p. 49-53.Research output: Contribution to journal › Article
TY - JOUR
T1 - Energy extraction system using dual-capacitor switching for quench protection of HTS magnet
AU - Choi, Yojong
AU - Lee, Woo Seung
AU - Song, Seunghyun
AU - Jeon, Haeryong
AU - Kang, Hyoungku
AU - Ko, Tae Kuk
PY - 2017/9/1
Y1 - 2017/9/1
N2 - The superconducting magnets have a large inductance as well as high operating current. Therefore, mega-joule scale energy can be stored in the magnet. The energy stored in the magnet is sufficient to damage the magnet when a quench occurs. Quench heater and dump resistor can be used to protect the magnet. However, using quench heater to create quench resistors through heat transfer can be slower than instantly switching resistors. Also, electrical short, overheating and breakdown can occur due to quench heater. Moreover, the number of dump resistor should be limited to avoid large terminal voltage. Therefore, in this paper, we propose a quench protection method for extracting the energy stored in a magnet by charging and discharging energy through a capacitor switching without increasing resistance. The simulation results show that the proposed system has a faster current decay within the allowable voltage level.
AB - The superconducting magnets have a large inductance as well as high operating current. Therefore, mega-joule scale energy can be stored in the magnet. The energy stored in the magnet is sufficient to damage the magnet when a quench occurs. Quench heater and dump resistor can be used to protect the magnet. However, using quench heater to create quench resistors through heat transfer can be slower than instantly switching resistors. Also, electrical short, overheating and breakdown can occur due to quench heater. Moreover, the number of dump resistor should be limited to avoid large terminal voltage. Therefore, in this paper, we propose a quench protection method for extracting the energy stored in a magnet by charging and discharging energy through a capacitor switching without increasing resistance. The simulation results show that the proposed system has a faster current decay within the allowable voltage level.
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U2 - 10.9714/psac.2017.19.3.049
DO - 10.9714/psac.2017.19.3.049
M3 - Article
VL - 19
SP - 49
EP - 53
JO - Progress in Superconductivity and Cryogenics (PSAC)
JF - Progress in Superconductivity and Cryogenics (PSAC)
SN - 1229-3008
IS - 3
ER -