Determining the Operating Current of No-Insulation Field Coils in HTS Generators
This paper proposes a new method for calculating the operating current of high-temperature superconducting (HTS) no-insulation coils whose overcurrent characteristics are more stable than those of conventional field magnets in superconducting generators. Problems related to calculating the operating...
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| Veröffentlicht in: | IEEE transactions on magnetics 2015-11, Vol.51 (11), p.1-4 |
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| container_title | IEEE transactions on magnetics |
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| creator | Kim, Hyung-Wook Jo, Young-Sik Kim, Seog-Whan Kim, Ho Min Jeong, Jae-Sik Hong, Jung-Pyo Hur, Jin |
| description | This paper proposes a new method for calculating the operating current of high-temperature superconducting (HTS) no-insulation coils whose overcurrent characteristics are more stable than those of conventional field magnets in superconducting generators. Problems related to calculating the operating current of conventional high-temperature superconductors have been analyzed, and the conditions for coils to overcome such problems have been proposed. To complement electrical stability issues of conventional HTS field coils, a small pancake coil was constructed from the Bismuth strontium calcium copper oxide (BSCCO) first-generation HTS wire with noinsulation winding. The pancake coil was then tested. The tests confirmed that the no-insulation coil was electrically stable. In addition, it was confirmed that quenching did not occur in electrically stabilized coils, even at higher input currents than the critical current value of the coil. In addition, the magnetic field value having the largest effect on the decrease in the critical magnetic field in the superconducting coil was calculated through finite-element method analysis, thus predicting the effective current of the superconducting coil. This analysis was compared with experimental results to demonstrate the validity of the proposed method. |
| doi_str_mv | 10.1109/TMAG.2015.2435800 |
| format | Article |
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Problems related to calculating the operating current of conventional high-temperature superconductors have been analyzed, and the conditions for coils to overcome such problems have been proposed. To complement electrical stability issues of conventional HTS field coils, a small pancake coil was constructed from the Bismuth strontium calcium copper oxide (BSCCO) first-generation HTS wire with noinsulation winding. The pancake coil was then tested. The tests confirmed that the no-insulation coil was electrically stable. In addition, it was confirmed that quenching did not occur in electrically stabilized coils, even at higher input currents than the critical current value of the coil. In addition, the magnetic field value having the largest effect on the decrease in the critical magnetic field in the superconducting coil was calculated through finite-element method analysis, thus predicting the effective current of the superconducting coil. This analysis was compared with experimental results to demonstrate the validity of the proposed method.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2015.2435800</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Coils ; Complement ; CURRENT ; ELECTRIC COILS ; Field coils ; GENERATORS ; High-temperature superconductors ; HTS coil ; HTS generators ; Insulation ; INSULATION (ELECTRICAL) ; INSULATORS ; MAGNETIC FIELD ; Magnetic fields ; Magnetism ; MATHEMATICAL ANALYSIS ; maximum effective current ; MINING ; no-insulation coil ; operating current ; Pancake coils ; Superconducting coils ; Superconducting magnets ; SUPERCONDUCTIVITY ; Superconductors ; Wires</subject><ispartof>IEEE transactions on magnetics, 2015-11, Vol.51 (11), p.1-4</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Nov 2015</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c326t-707c880e033ebe6a5385eb1578c364494c07275acb3f35c3f5b98ab44627c6ea3</citedby><cites>FETCH-LOGICAL-c326t-707c880e033ebe6a5385eb1578c364494c07275acb3f35c3f5b98ab44627c6ea3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7114283$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,777,781,793,27905,27906,54739</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/7114283$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Kim, Hyung-Wook</creatorcontrib><creatorcontrib>Jo, Young-Sik</creatorcontrib><creatorcontrib>Kim, Seog-Whan</creatorcontrib><creatorcontrib>Kim, Ho Min</creatorcontrib><creatorcontrib>Jeong, Jae-Sik</creatorcontrib><creatorcontrib>Hong, Jung-Pyo</creatorcontrib><creatorcontrib>Hur, Jin</creatorcontrib><title>Determining the Operating Current of No-Insulation Field Coils in HTS Generators</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>This paper proposes a new method for calculating the operating current of high-temperature superconducting (HTS) no-insulation coils whose overcurrent characteristics are more stable than those of conventional field magnets in superconducting generators. Problems related to calculating the operating current of conventional high-temperature superconductors have been analyzed, and the conditions for coils to overcome such problems have been proposed. To complement electrical stability issues of conventional HTS field coils, a small pancake coil was constructed from the Bismuth strontium calcium copper oxide (BSCCO) first-generation HTS wire with noinsulation winding. The pancake coil was then tested. The tests confirmed that the no-insulation coil was electrically stable. In addition, it was confirmed that quenching did not occur in electrically stabilized coils, even at higher input currents than the critical current value of the coil. In addition, the magnetic field value having the largest effect on the decrease in the critical magnetic field in the superconducting coil was calculated through finite-element method analysis, thus predicting the effective current of the superconducting coil. This analysis was compared with experimental results to demonstrate the validity of the proposed method.</description><subject>Coils</subject><subject>Complement</subject><subject>CURRENT</subject><subject>ELECTRIC COILS</subject><subject>Field coils</subject><subject>GENERATORS</subject><subject>High-temperature superconductors</subject><subject>HTS coil</subject><subject>HTS generators</subject><subject>Insulation</subject><subject>INSULATION (ELECTRICAL)</subject><subject>INSULATORS</subject><subject>MAGNETIC FIELD</subject><subject>Magnetic fields</subject><subject>Magnetism</subject><subject>MATHEMATICAL ANALYSIS</subject><subject>maximum effective current</subject><subject>MINING</subject><subject>no-insulation coil</subject><subject>operating current</subject><subject>Pancake coils</subject><subject>Superconducting coils</subject><subject>Superconducting magnets</subject><subject>SUPERCONDUCTIVITY</subject><subject>Superconductors</subject><subject>Wires</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkE1Lw0AQhhdRsFZ_gHhZ8OIldTf7fSzVtkK1gvUcNutEU9Ldupsc_PcmtHjwNLzM8w7Dg9A1JRNKibnfPE8Xk5xQMck5E5qQEzSihtOMEGlO0YgQqjPDJT9HFylt-8gFJSP0-gAtxF3ta_-J2y_A6z1E2w5p1sUIvsWhwi8he_Kpa_pF8HheQ_OBZ6FuEq49Xm7e8AL8UAsxXaKzyjYJro5zjN7nj5vZMlutF0-z6SpzLJdtpohyWhMgjEEJ0gqmBZRUKO2Y5NxwR1SuhHUlq5hwrBKl0bbkXObKSbBsjO4Od_cxfHeQ2mJXJwdNYz2ELhVUKWWM0Czv0dt_6DZ00fff9VRuWE9J1VP0QLkYUopQFftY72z8KSgpBsfF4LgYHBdHx33n5tCpAeCPV5TyXDP2C0PYdgc</recordid><startdate>201511</startdate><enddate>201511</enddate><creator>Kim, Hyung-Wook</creator><creator>Jo, Young-Sik</creator><creator>Kim, Seog-Whan</creator><creator>Kim, Ho Min</creator><creator>Jeong, Jae-Sik</creator><creator>Hong, Jung-Pyo</creator><creator>Hur, Jin</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>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>F28</scope><scope>FR3</scope><scope>H8G</scope></search><sort><creationdate>201511</creationdate><title>Determining the Operating Current of No-Insulation Field Coils in HTS Generators</title><author>Kim, Hyung-Wook ; Jo, Young-Sik ; Kim, Seog-Whan ; Kim, Ho Min ; Jeong, Jae-Sik ; Hong, Jung-Pyo ; Hur, Jin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c326t-707c880e033ebe6a5385eb1578c364494c07275acb3f35c3f5b98ab44627c6ea3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Coils</topic><topic>Complement</topic><topic>CURRENT</topic><topic>ELECTRIC COILS</topic><topic>Field coils</topic><topic>GENERATORS</topic><topic>High-temperature superconductors</topic><topic>HTS coil</topic><topic>HTS generators</topic><topic>Insulation</topic><topic>INSULATION (ELECTRICAL)</topic><topic>INSULATORS</topic><topic>MAGNETIC FIELD</topic><topic>Magnetic fields</topic><topic>Magnetism</topic><topic>MATHEMATICAL ANALYSIS</topic><topic>maximum effective current</topic><topic>MINING</topic><topic>no-insulation coil</topic><topic>operating current</topic><topic>Pancake coils</topic><topic>Superconducting coils</topic><topic>Superconducting magnets</topic><topic>SUPERCONDUCTIVITY</topic><topic>Superconductors</topic><topic>Wires</topic><toplevel>online_resources</toplevel><creatorcontrib>Kim, Hyung-Wook</creatorcontrib><creatorcontrib>Jo, Young-Sik</creatorcontrib><creatorcontrib>Kim, Seog-Whan</creatorcontrib><creatorcontrib>Kim, Ho Min</creatorcontrib><creatorcontrib>Jeong, Jae-Sik</creatorcontrib><creatorcontrib>Hong, Jung-Pyo</creatorcontrib><creatorcontrib>Hur, Jin</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>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Copper Technical Reference Library</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Kim, Hyung-Wook</au><au>Jo, Young-Sik</au><au>Kim, Seog-Whan</au><au>Kim, Ho Min</au><au>Jeong, Jae-Sik</au><au>Hong, Jung-Pyo</au><au>Hur, Jin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determining the Operating Current of No-Insulation Field Coils in HTS Generators</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>2015-11</date><risdate>2015</risdate><volume>51</volume><issue>11</issue><spage>1</spage><epage>4</epage><pages>1-4</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>This paper proposes a new method for calculating the operating current of high-temperature superconducting (HTS) no-insulation coils whose overcurrent characteristics are more stable than those of conventional field magnets in superconducting generators. Problems related to calculating the operating current of conventional high-temperature superconductors have been analyzed, and the conditions for coils to overcome such problems have been proposed. To complement electrical stability issues of conventional HTS field coils, a small pancake coil was constructed from the Bismuth strontium calcium copper oxide (BSCCO) first-generation HTS wire with noinsulation winding. The pancake coil was then tested. The tests confirmed that the no-insulation coil was electrically stable. In addition, it was confirmed that quenching did not occur in electrically stabilized coils, even at higher input currents than the critical current value of the coil. In addition, the magnetic field value having the largest effect on the decrease in the critical magnetic field in the superconducting coil was calculated through finite-element method analysis, thus predicting the effective current of the superconducting coil. This analysis was compared with experimental results to demonstrate the validity of the proposed method.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TMAG.2015.2435800</doi><tpages>4</tpages></addata></record> |
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| subjects | Coils Complement CURRENT ELECTRIC COILS Field coils GENERATORS High-temperature superconductors HTS coil HTS generators Insulation INSULATION (ELECTRICAL) INSULATORS MAGNETIC FIELD Magnetic fields Magnetism MATHEMATICAL ANALYSIS maximum effective current MINING no-insulation coil operating current Pancake coils Superconducting coils Superconducting magnets SUPERCONDUCTIVITY Superconductors Wires |
| title | Determining the Operating Current of No-Insulation Field Coils in HTS Generators |
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