Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/181763
Title: Feasibility Study of Closed-Loop No-Insulation Coil to Shield Alternating Magnetic Field
Authors: Derong Qiu;Jianwen Zhang;Bengang Wei;Hua Huang;Feng Gu;Zhuyong Li;Zhen Huang;Wei Wu;Daoyu Hu;Junjie Jiang;Zhiyong Hong;Zhijian Jin
Year: 2017
Publisher: IEEE
Abstract: No-insulation (NI) coil made of 2G high-temperature superconductor tape is widely used in a dc magnet due to its excellent performance of engineering current density, thermal stability, and mechanical strength. While the charging&x002F;discharging delay of the NI coil has become the biggest obstacle to applying it into an ac power device. In this paper, as a preliminary study, we test the capability of the NI coil to shield alternating magnetic field (AMF). When shielding AMF, the NI coil works in inductive mode such that each turn in the NI coil is induced at the same time and there might no longer exist any delay caused by turn-to-turn current path. To verify this hypothesis, three closed-loop coils, two NI coils, and an insulated (INS) coil are fabricated. The result of the contrast experiments shows that the NI coil could shield all the alternating magnetic flux through it, independent of turn-to-turn resistance and frequency of the background AMF. This capability is promising for the NI coil to be applied in the inductive superconducting fault current limiter (iSFCL) as the secondary winding, which can shield all the magnetic flux generated by the primary winding to keep the impedance of the iSFCL at a very low level during normal the operation of the power system.
URI: http://localhost/handle/Hannan/181763
volume: 27
issue: 6
More Information: 1,
5
Appears in Collections:2017

Files in This Item:
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7993064.pdf431.89 kBAdobe PDF
Title: Feasibility Study of Closed-Loop No-Insulation Coil to Shield Alternating Magnetic Field
Authors: Derong Qiu;Jianwen Zhang;Bengang Wei;Hua Huang;Feng Gu;Zhuyong Li;Zhen Huang;Wei Wu;Daoyu Hu;Junjie Jiang;Zhiyong Hong;Zhijian Jin
Year: 2017
Publisher: IEEE
Abstract: No-insulation (NI) coil made of 2G high-temperature superconductor tape is widely used in a dc magnet due to its excellent performance of engineering current density, thermal stability, and mechanical strength. While the charging&x002F;discharging delay of the NI coil has become the biggest obstacle to applying it into an ac power device. In this paper, as a preliminary study, we test the capability of the NI coil to shield alternating magnetic field (AMF). When shielding AMF, the NI coil works in inductive mode such that each turn in the NI coil is induced at the same time and there might no longer exist any delay caused by turn-to-turn current path. To verify this hypothesis, three closed-loop coils, two NI coils, and an insulated (INS) coil are fabricated. The result of the contrast experiments shows that the NI coil could shield all the alternating magnetic flux through it, independent of turn-to-turn resistance and frequency of the background AMF. This capability is promising for the NI coil to be applied in the inductive superconducting fault current limiter (iSFCL) as the secondary winding, which can shield all the magnetic flux generated by the primary winding to keep the impedance of the iSFCL at a very low level during normal the operation of the power system.
URI: http://localhost/handle/Hannan/181763
volume: 27
issue: 6
More Information: 1,
5
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7993064.pdf431.89 kBAdobe PDF
Title: Feasibility Study of Closed-Loop No-Insulation Coil to Shield Alternating Magnetic Field
Authors: Derong Qiu;Jianwen Zhang;Bengang Wei;Hua Huang;Feng Gu;Zhuyong Li;Zhen Huang;Wei Wu;Daoyu Hu;Junjie Jiang;Zhiyong Hong;Zhijian Jin
Year: 2017
Publisher: IEEE
Abstract: No-insulation (NI) coil made of 2G high-temperature superconductor tape is widely used in a dc magnet due to its excellent performance of engineering current density, thermal stability, and mechanical strength. While the charging&x002F;discharging delay of the NI coil has become the biggest obstacle to applying it into an ac power device. In this paper, as a preliminary study, we test the capability of the NI coil to shield alternating magnetic field (AMF). When shielding AMF, the NI coil works in inductive mode such that each turn in the NI coil is induced at the same time and there might no longer exist any delay caused by turn-to-turn current path. To verify this hypothesis, three closed-loop coils, two NI coils, and an insulated (INS) coil are fabricated. The result of the contrast experiments shows that the NI coil could shield all the alternating magnetic flux through it, independent of turn-to-turn resistance and frequency of the background AMF. This capability is promising for the NI coil to be applied in the inductive superconducting fault current limiter (iSFCL) as the secondary winding, which can shield all the magnetic flux generated by the primary winding to keep the impedance of the iSFCL at a very low level during normal the operation of the power system.
URI: http://localhost/handle/Hannan/181763
volume: 27
issue: 6
More Information: 1,
5
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7993064.pdf431.89 kBAdobe PDF