Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields
Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a ti...
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| Autor*in: |
Zou, Jin [verfasserIn] |
|---|
| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: IEEE transactions on applied superconductivity - New York, NY : Inst., 1991, 26(2016), 4, Seite 1-5 |
|---|---|
| Übergeordnetes Werk: |
volume:26 ; year:2016 ; number:4 ; pages:1-5 |
| Links: |
|---|
| DOI / URN: |
10.1109/TASC.2016.2525820 |
|---|
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OLC1974160033 |
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| 520 | |a Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. | ||
| 650 | 4 | |a Magnetic fields | |
| 650 | 4 | |a trapped field attenuation | |
| 650 | 4 | |a Magnetic materials | |
| 650 | 4 | |a finite element method | |
| 650 | 4 | |a trapped field magnets | |
| 650 | 4 | |a Demagnetization | |
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| 650 | 4 | |a Copper | |
| 650 | 4 | |a High-temperature superconductors | |
| 650 | 4 | |a numerical simulation | |
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| 700 | 1 | |a Hu, Di |4 oth | |
| 700 | 1 | |a Cardwell, David A |4 oth | |
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10.1109/TASC.2016.2525820 doi PQ20160719 (DE-627)OLC1974160033 (DE-599)GBVOLC1974160033 (PRQ)i651-35ec1d729130ad0d39bf8a4fed38a4bba2df9969cb6a272669e2c4a4bf81884d0 (KEY)0203240620160000026000400001mitigationofdemagnetizationofbulksuperconductorsby DE-627 ger DE-627 rakwb eng 530 620 DNB Zou, Jin verfasserin aut Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. Magnetic fields trapped field attenuation Magnetic materials finite element method trapped field magnets Demagnetization Mathematical model Copper High-temperature superconductors numerical simulation Ainslie, Mark D oth Hu, Di oth Cardwell, David A oth Enthalten in IEEE transactions on applied superconductivity New York, NY : Inst., 1991 26(2016), 4, Seite 1-5 (DE-627)130969559 (DE-600)1070182-5 (DE-576)025189840 1051-8223 nnns volume:26 year:2016 number:4 pages:1-5 http://dx.doi.org/10.1109/TASC.2016.2525820 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7399384 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 26 2016 4 1-5 |
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10.1109/TASC.2016.2525820 doi PQ20160719 (DE-627)OLC1974160033 (DE-599)GBVOLC1974160033 (PRQ)i651-35ec1d729130ad0d39bf8a4fed38a4bba2df9969cb6a272669e2c4a4bf81884d0 (KEY)0203240620160000026000400001mitigationofdemagnetizationofbulksuperconductorsby DE-627 ger DE-627 rakwb eng 530 620 DNB Zou, Jin verfasserin aut Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. Magnetic fields trapped field attenuation Magnetic materials finite element method trapped field magnets Demagnetization Mathematical model Copper High-temperature superconductors numerical simulation Ainslie, Mark D oth Hu, Di oth Cardwell, David A oth Enthalten in IEEE transactions on applied superconductivity New York, NY : Inst., 1991 26(2016), 4, Seite 1-5 (DE-627)130969559 (DE-600)1070182-5 (DE-576)025189840 1051-8223 nnns volume:26 year:2016 number:4 pages:1-5 http://dx.doi.org/10.1109/TASC.2016.2525820 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7399384 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 26 2016 4 1-5 |
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10.1109/TASC.2016.2525820 doi PQ20160719 (DE-627)OLC1974160033 (DE-599)GBVOLC1974160033 (PRQ)i651-35ec1d729130ad0d39bf8a4fed38a4bba2df9969cb6a272669e2c4a4bf81884d0 (KEY)0203240620160000026000400001mitigationofdemagnetizationofbulksuperconductorsby DE-627 ger DE-627 rakwb eng 530 620 DNB Zou, Jin verfasserin aut Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. Magnetic fields trapped field attenuation Magnetic materials finite element method trapped field magnets Demagnetization Mathematical model Copper High-temperature superconductors numerical simulation Ainslie, Mark D oth Hu, Di oth Cardwell, David A oth Enthalten in IEEE transactions on applied superconductivity New York, NY : Inst., 1991 26(2016), 4, Seite 1-5 (DE-627)130969559 (DE-600)1070182-5 (DE-576)025189840 1051-8223 nnns volume:26 year:2016 number:4 pages:1-5 http://dx.doi.org/10.1109/TASC.2016.2525820 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7399384 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 26 2016 4 1-5 |
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10.1109/TASC.2016.2525820 doi PQ20160719 (DE-627)OLC1974160033 (DE-599)GBVOLC1974160033 (PRQ)i651-35ec1d729130ad0d39bf8a4fed38a4bba2df9969cb6a272669e2c4a4bf81884d0 (KEY)0203240620160000026000400001mitigationofdemagnetizationofbulksuperconductorsby DE-627 ger DE-627 rakwb eng 530 620 DNB Zou, Jin verfasserin aut Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. Magnetic fields trapped field attenuation Magnetic materials finite element method trapped field magnets Demagnetization Mathematical model Copper High-temperature superconductors numerical simulation Ainslie, Mark D oth Hu, Di oth Cardwell, David A oth Enthalten in IEEE transactions on applied superconductivity New York, NY : Inst., 1991 26(2016), 4, Seite 1-5 (DE-627)130969559 (DE-600)1070182-5 (DE-576)025189840 1051-8223 nnns volume:26 year:2016 number:4 pages:1-5 http://dx.doi.org/10.1109/TASC.2016.2525820 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7399384 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 26 2016 4 1-5 |
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10.1109/TASC.2016.2525820 doi PQ20160719 (DE-627)OLC1974160033 (DE-599)GBVOLC1974160033 (PRQ)i651-35ec1d729130ad0d39bf8a4fed38a4bba2df9969cb6a272669e2c4a4bf81884d0 (KEY)0203240620160000026000400001mitigationofdemagnetizationofbulksuperconductorsby DE-627 ger DE-627 rakwb eng 530 620 DNB Zou, Jin verfasserin aut Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. Magnetic fields trapped field attenuation Magnetic materials finite element method trapped field magnets Demagnetization Mathematical model Copper High-temperature superconductors numerical simulation Ainslie, Mark D oth Hu, Di oth Cardwell, David A oth Enthalten in IEEE transactions on applied superconductivity New York, NY : Inst., 1991 26(2016), 4, Seite 1-5 (DE-627)130969559 (DE-600)1070182-5 (DE-576)025189840 1051-8223 nnns volume:26 year:2016 number:4 pages:1-5 http://dx.doi.org/10.1109/TASC.2016.2525820 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7399384 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 26 2016 4 1-5 |
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Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields |
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Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields |
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Zou, Jin |
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IEEE transactions on applied superconductivity |
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IEEE transactions on applied superconductivity |
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Zou, Jin |
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Zou, Jin |
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10.1109/TASC.2016.2525820 |
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530 620 |
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mitigation of demagnetization of bulk superconductors by time-varying external magnetic fields |
| title_auth |
Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields |
| abstract |
Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. |
| abstractGer |
Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. |
| abstract_unstemmed |
Large single-grain high-temperature superconducting bulks have significant potential to replace permanent magnets in various engineering applications. However, based on our previous research, the trapped field in a bulk superconductor can be attenuated or even erased when a bulk is subjected to a time-varying external magnetic field. Therefore, it is important to develop a method to protect bulks from demagnetization by improving the thermal conduction of the bulk and/or reducing ac losses. Improvement in the thermal conduction of bulks involves modification of the material fabrication process, which may have a detrimental effect on its superconducting properties. Employing shielding materials around a bulk helps to decrease the ac losses, but also provides a durable way to maintain the original material properties. In this paper, two shielding cases are proposed and evaluated numerically: ring-shaped shielding with a copper coil and surface shielding with a ferromagnetic material. Based on the numerical modeling results, the ring-shaped coil works well for externally applied ac fields of larger magnitude and higher frequency. However, the ferromagnetic material was preferable for surface shielding for relatively lower fields. Finally, an optimal shield design is presented. |
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| title_short |
Mitigation of Demagnetization of Bulk Superconductors by Time-Varying External Magnetic Fields |
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http://dx.doi.org/10.1109/TASC.2016.2525820 http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7399384 |
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Ainslie, Mark D Hu, Di Cardwell, David A |
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Ainslie, Mark D Hu, Di Cardwell, David A |
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2024-07-04T03:53:28.378Z |
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