Quench Protection of HTS Magnet Composed of Multiple Pancake-coils by Forming Auxiliary Dump Resistor Loop
The most probable cause of quench damage of HTS magnets is over-heating at the highest temperature spot (hot-spot) in the magnet wire during the quench protection sequence. Therefore, to avoid damage, it is necessary to reduce heat generation in the hot-spot. The authors propose a method to reduce t...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2019-08, Vol.29 (5), p.1-6 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Toriyama, Hifumi Fuchida, Yoshiki Nomoto, Akihiro Taguchi, Haruka Takao, Tomoaki Nakamura, Kazuya Tsukamoto, Osami Furuse, Mitsuho |
| description | The most probable cause of quench damage of HTS magnets is over-heating at the highest temperature spot (hot-spot) in the magnet wire during the quench protection sequence. Therefore, to avoid damage, it is necessary to reduce heat generation in the hot-spot. The authors propose a method to reduce the hot-spot temperature of a magnet composed of multiple sub-pancake-coils by reducing current in a quenching sub-coil. A quench occurs most often in a sub-coil that has critical current Ic lower than that of the other sub-coils. When a quench is detected in the lower Ic sub-coil, the current of the quenching sub-coil is transferred to the other coils with higher Ic ' s resistively shorting the other sub-coils by forming auxiliary dump resistor loop. In this paper, the effectiveness of the method is shown by a case study of a magnet composed of eight pancake sub-coils. |
| doi_str_mv | 10.1109/TASC.2019.2902186 |
| format | Article |
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Therefore, to avoid damage, it is necessary to reduce heat generation in the hot-spot. The authors propose a method to reduce the hot-spot temperature of a magnet composed of multiple sub-pancake-coils by reducing current in a quenching sub-coil. A quench occurs most often in a sub-coil that has critical current Ic lower than that of the other sub-coils. When a quench is detected in the lower Ic sub-coil, the current of the quenching sub-coil is transferred to the other coils with higher Ic ' s resistively shorting the other sub-coils by forming auxiliary dump resistor loop. In this paper, the effectiveness of the method is shown by a case study of a magnet composed of eight pancake sub-coils.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/TASC.2019.2902186</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Auxiliary dump resistor loop ; Coils ; Critical current (superconductivity) ; Heat generation ; High-temperature superconductors ; hot-spot temperature ; HTS coil ; Integrated circuits ; Magnets ; numerical analysis ; Numerical models ; quench protection ; Quenching ; Superconducting magnets ; Windings ; Wires</subject><ispartof>IEEE transactions on applied superconductivity, 2019-08, Vol.29 (5), p.1-6</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-ee016ddb29e57ecb5b9676efc05d02877656d4b6e2fde6290add0882b902da283</citedby><cites>FETCH-LOGICAL-c293t-ee016ddb29e57ecb5b9676efc05d02877656d4b6e2fde6290add0882b902da283</cites><orcidid>0000-0001-6964-5710 ; 0000-0001-9704-4971 ; 0000-0002-5975-2405 ; 0000-0003-4308-8076</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/8654675$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>315,781,785,797,27929,27930,54763</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/8654675$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Toriyama, Hifumi</creatorcontrib><creatorcontrib>Fuchida, Yoshiki</creatorcontrib><creatorcontrib>Nomoto, Akihiro</creatorcontrib><creatorcontrib>Taguchi, Haruka</creatorcontrib><creatorcontrib>Takao, Tomoaki</creatorcontrib><creatorcontrib>Nakamura, Kazuya</creatorcontrib><creatorcontrib>Tsukamoto, Osami</creatorcontrib><creatorcontrib>Furuse, Mitsuho</creatorcontrib><title>Quench Protection of HTS Magnet Composed of Multiple Pancake-coils by Forming Auxiliary Dump Resistor Loop</title><title>IEEE transactions on applied superconductivity</title><addtitle>TASC</addtitle><description>The most probable cause of quench damage of HTS magnets is over-heating at the highest temperature spot (hot-spot) in the magnet wire during the quench protection sequence. Therefore, to avoid damage, it is necessary to reduce heat generation in the hot-spot. The authors propose a method to reduce the hot-spot temperature of a magnet composed of multiple sub-pancake-coils by reducing current in a quenching sub-coil. A quench occurs most often in a sub-coil that has critical current Ic lower than that of the other sub-coils. When a quench is detected in the lower Ic sub-coil, the current of the quenching sub-coil is transferred to the other coils with higher Ic ' s resistively shorting the other sub-coils by forming auxiliary dump resistor loop. In this paper, the effectiveness of the method is shown by a case study of a magnet composed of eight pancake sub-coils.</description><subject>Auxiliary dump resistor loop</subject><subject>Coils</subject><subject>Critical current (superconductivity)</subject><subject>Heat generation</subject><subject>High-temperature superconductors</subject><subject>hot-spot temperature</subject><subject>HTS coil</subject><subject>Integrated circuits</subject><subject>Magnets</subject><subject>numerical analysis</subject><subject>Numerical models</subject><subject>quench protection</subject><subject>Quenching</subject><subject>Superconducting magnets</subject><subject>Windings</subject><subject>Wires</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kEFPwzAMhSMEEjD4AYhLJM4dSdqk6XEqjCFtYrBxjtrGHRltU5JWYv-eVps42bLes_0-hO4omVJKksftbJNOGaHJlCWEUSnO0BXlXAaMU34-9ITTQDIWXqJr7_eE0EhG_Art33toii-8draDojO2wbbEi-0Gr7JdAx1Obd1aD3ocr_qqM20FeJ01RfYNQWFN5XF-wHPratPs8Kz_NZXJ3AE_9XWLP8Ab31mHl9a2N-iizCoPt6c6QZ_z5226CJZvL6_pbBkULAm7AIBQoXXOEuAxFDnPExELKAvCNWEyjgUXOsoFsFKDGNJmWhMpWT7k1hmT4QQ9HPe2zv704Du1t71rhpOKMSo4FZSLQUWPqsJZ7x2UqnWmHj5XlKgRqRqRqhGpOiEdPPdHjwGAf70UPBIxD_8AxG9yuw</recordid><startdate>20190801</startdate><enddate>20190801</enddate><creator>Toriyama, Hifumi</creator><creator>Fuchida, Yoshiki</creator><creator>Nomoto, Akihiro</creator><creator>Taguchi, Haruka</creator><creator>Takao, Tomoaki</creator><creator>Nakamura, Kazuya</creator><creator>Tsukamoto, Osami</creator><creator>Furuse, Mitsuho</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-6964-5710</orcidid><orcidid>https://orcid.org/0000-0001-9704-4971</orcidid><orcidid>https://orcid.org/0000-0002-5975-2405</orcidid><orcidid>https://orcid.org/0000-0003-4308-8076</orcidid></search><sort><creationdate>20190801</creationdate><title>Quench Protection of HTS Magnet Composed of Multiple Pancake-coils by Forming Auxiliary Dump Resistor Loop</title><author>Toriyama, Hifumi ; Fuchida, Yoshiki ; Nomoto, Akihiro ; Taguchi, Haruka ; Takao, Tomoaki ; Nakamura, Kazuya ; Tsukamoto, Osami ; Furuse, Mitsuho</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-ee016ddb29e57ecb5b9676efc05d02877656d4b6e2fde6290add0882b902da283</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Auxiliary dump resistor loop</topic><topic>Coils</topic><topic>Critical current (superconductivity)</topic><topic>Heat generation</topic><topic>High-temperature superconductors</topic><topic>hot-spot temperature</topic><topic>HTS coil</topic><topic>Integrated circuits</topic><topic>Magnets</topic><topic>numerical analysis</topic><topic>Numerical models</topic><topic>quench protection</topic><topic>Quenching</topic><topic>Superconducting magnets</topic><topic>Windings</topic><topic>Wires</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Toriyama, Hifumi</creatorcontrib><creatorcontrib>Fuchida, Yoshiki</creatorcontrib><creatorcontrib>Nomoto, Akihiro</creatorcontrib><creatorcontrib>Taguchi, Haruka</creatorcontrib><creatorcontrib>Takao, Tomoaki</creatorcontrib><creatorcontrib>Nakamura, Kazuya</creatorcontrib><creatorcontrib>Tsukamoto, Osami</creatorcontrib><creatorcontrib>Furuse, Mitsuho</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on applied superconductivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Toriyama, Hifumi</au><au>Fuchida, Yoshiki</au><au>Nomoto, Akihiro</au><au>Taguchi, Haruka</au><au>Takao, Tomoaki</au><au>Nakamura, Kazuya</au><au>Tsukamoto, Osami</au><au>Furuse, Mitsuho</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quench Protection of HTS Magnet Composed of Multiple Pancake-coils by Forming Auxiliary Dump Resistor Loop</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>2019-08-01</date><risdate>2019</risdate><volume>29</volume><issue>5</issue><spage>1</spage><epage>6</epage><pages>1-6</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>The most probable cause of quench damage of HTS magnets is over-heating at the highest temperature spot (hot-spot) in the magnet wire during the quench protection sequence. Therefore, to avoid damage, it is necessary to reduce heat generation in the hot-spot. The authors propose a method to reduce the hot-spot temperature of a magnet composed of multiple sub-pancake-coils by reducing current in a quenching sub-coil. A quench occurs most often in a sub-coil that has critical current Ic lower than that of the other sub-coils. When a quench is detected in the lower Ic sub-coil, the current of the quenching sub-coil is transferred to the other coils with higher Ic ' s resistively shorting the other sub-coils by forming auxiliary dump resistor loop. In this paper, the effectiveness of the method is shown by a case study of a magnet composed of eight pancake sub-coils.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TASC.2019.2902186</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-6964-5710</orcidid><orcidid>https://orcid.org/0000-0001-9704-4971</orcidid><orcidid>https://orcid.org/0000-0002-5975-2405</orcidid><orcidid>https://orcid.org/0000-0003-4308-8076</orcidid></addata></record> |
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| subjects | Auxiliary dump resistor loop Coils Critical current (superconductivity) Heat generation High-temperature superconductors hot-spot temperature HTS coil Integrated circuits Magnets numerical analysis Numerical models quench protection Quenching Superconducting magnets Windings Wires |
| title | Quench Protection of HTS Magnet Composed of Multiple Pancake-coils by Forming Auxiliary Dump Resistor Loop |
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