Varistors: A Useful Tool for Superconducting Magnet Quench Protection
A perfect varistor is a constant voltage resistor as a function of current through the resistor. A perfect varistor can't exist, because its resistance would be infinite at zero current. In electronic devices, varistors are often used as surge protectors. A varistor can be used in place of an o...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2021-08, Vol.31 (5), p.1-5 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Strauss, Bruce P. Green, Michael A. |
| description | A perfect varistor is a constant voltage resistor as a function of current through the resistor. A perfect varistor can't exist, because its resistance would be infinite at zero current. In electronic devices, varistors are often used as surge protectors. A varistor can be used in place of an ordinary resistor as the discharge resistance across superconducting coil sections. When used this way, the integral of I 2 dt during the discharge can be reduced by almost one third. When a varistor is used for quench protection of coils that are coupled to shorted secondary circuits the integral of I 2 dt can be reduced much more. This can be a key factor when coil current densities and stored energies are high as in many potential HTS magnet systems. This paper discusses the types of varistors that are commercially available and their characteristics. |
| doi_str_mv | 10.1109/TASC.2021.3058225 |
| format | Article |
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This paper discusses the types of varistors that are commercially available and their characteristics.</description><subject>Circuit protection</subject><subject>Coils</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>conductors</subject><subject>Diodes</subject><subject>Discharge</subject><subject>Electronic devices</subject><subject>II-VI semiconductor materials</subject><subject>Integrals</subject><subject>Magnetism</subject><subject>silicon</subject><subject>Silicon carbide</subject><subject>superconducting magnet quench protection</subject><subject>Superconducting magnets</subject><subject>Superconductivity</subject><subject>Surge protectors</subject><subject>Varistors</subject><subject>Zinc oxide</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE1LAzEQhoMoWKs_QLwEPW_NJJtN4q2U-gEVlbZew26SbbfUTU12D_57U1aEwGRmnpl5eRG6BjIBIOp-NV3OJpRQmDDCJaX8BI2Ac5lRDvw0_QmHLNXZObqIcUcI5DLnIzT_LEMTOx_iA57idXR1v8cr7_e49gEv-4MLxre2N13TbvBruWldhz9615otfg--c6nh20t0Vpf76K7-4hitH-er2XO2eHt6mU0XmWGQF1mlqKpr5grDRCVsKSF3lRCFFCAqq2xFKQEhGDPWgpApAakqZlkurU2PjdHtsNfHrtHRNOn-NulrkwwNkqpCiQTdDdAh-O_exU7vfB_apEtTTngBTIkiUTBQJvgYg6v1ITRfZfjRQPTRUn20VB8t1X-WppmbYaZxzv3zinEohGK_KANwjA</recordid><startdate>20210801</startdate><enddate>20210801</enddate><creator>Strauss, Bruce P.</creator><creator>Green, Michael A.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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(LBNL), Berkeley, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Varistors: A Useful Tool for Superconducting Magnet Quench Protection</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>2021-08-01</date><risdate>2021</risdate><volume>31</volume><issue>5</issue><spage>1</spage><epage>5</epage><pages>1-5</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>A perfect varistor is a constant voltage resistor as a function of current through the resistor. A perfect varistor can't exist, because its resistance would be infinite at zero current. In electronic devices, varistors are often used as surge protectors. A varistor can be used in place of an ordinary resistor as the discharge resistance across superconducting coil sections. When used this way, the integral of I 2 dt during the discharge can be reduced by almost one third. 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| subjects | Circuit protection Coils CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY conductors Diodes Discharge Electronic devices II-VI semiconductor materials Integrals Magnetism silicon Silicon carbide superconducting magnet quench protection Superconducting magnets Superconductivity Surge protectors Varistors Zinc oxide |
| title | Varistors: A Useful Tool for Superconducting Magnet Quench Protection |
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