NDLI: Characteristic Analysis and Design of the Heater Triggered Switch for High-Tc Power Supply in Various Helium Conditions

Content Provider	IEEE Xplore Digital Library
Author	Young Jae Kim Seong Eun Yang Ki Sung Chang Dong Keun Park Tae Kuk Ko Ho Min Kim Yong Soo Yoon Jong Bin Song Hai-gun Lee
Copyright Year	2002
Abstract	This paper presents experimental results and characteristic analysis of a high-Tc heater-triggered switch using a coated conductor (CC) in various low operational temperatures. A high temperature superconducting (HTS) power supply has been studied only focusing on proving the operational concept rather than applying to real superconducting magnet load. A HTS insert coil that can be installed in a low temperature superconducting (LTS) magnet has been proposed and researched to generate higher magnetic field for NMR. Since the CC could be an attractive option for the HTS insert coil, it is important to research about characteristics of the heater-triggered switch employing the CC in the low temperature. The HTS power supply consists of the two switches and one of key design parameters is to make a timing sequential chart. We investigated a quench and recovery time of the switch with respect to a heater current. A heater test in a gas helium condition was also performed and compared with the result in a liquid helium condition. From these tests, a basic data of the heater-triggered switch for optimal design of the HTS power supply was obtained; correlations among the heater current, a state and temperature of cryogen, and the quench and recovery time.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2350
Ending Page	2353
Page Count	4
File Size	675891
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switches Power supplies Helium High temperature superconductors Superconducting coils Superconducting magnets Heat recovery Testing Magnetic analysis Conductors YBCO coated conductor Heater-triggered switch various low operational temperatures
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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