DocumentCode
2857453
Title
Quench protection of persistent current switches using diodes in cryogenic temperature
Author
Yamamoto, Shunji ; Yamada, Tadatoshi ; Iwamoto, Masatami
Author_Institution
Mitsubishi Electr. Corp., Hyogo, Japan
fYear
1988
fDate
11-14 April 1988
Firstpage
321
Abstract
Transient characteristics of power diodes at cryogenic temperatures and their application to the protection of persistent current switches (PCS) in superconducting magnet systems are presented. The observed forward voltage drop was 9 V at 4.2 K and was six times larger than that at room temperature. The voltage was quickly reduced to 1 V after the diode was turned on. The transition time was less than 1 ms. A PCS with a normal state resistance of 1.5 Omega was adequately protected from quenching by the diodes.<>
Keywords
protection; semiconductor diodes; superconducting magnets; switches; 1.5 ohm; 4.2 K; cryogenic temperature; diodes; persistent current switches; power diodes; quench protection; superconducting magnet systems; transient characteristics; Cryogenics; Diodes; Magnetic switching; Persistent currents; Personal communication networks; Power system protection; Superconducting magnets; Switches; Temperature; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location
Kyoto, Japan
Type
conf
DOI
10.1109/PESC.1988.18150
Filename
18150
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