DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System
In this paper, the fault current limiting (FCL) characteristics of a flux-coupled type superconducting fault current limiter (SFCL) with parallel connection between two windings in a DC system were analyzed. The flux-coupled type SFCL was composed of two coils connected in parallel and a superconduc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/4/1096 |
| _version_ | 1797395990215393280 |
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| author | Young-Pil Kim Seok-Cheol Ko |
| author_facet | Young-Pil Kim Seok-Cheol Ko |
| author_sort | Young-Pil Kim |
| collection | DOAJ |
| description | In this paper, the fault current limiting (FCL) characteristics of a flux-coupled type superconducting fault current limiter (SFCL) with parallel connection between two windings in a DC system were analyzed. The flux-coupled type SFCL was composed of two coils connected in parallel and a superconducting element (SE), which was connected in series with the secondary coil. The flux-coupled type SFCL works in DC systems similar to those in AC systems. Before a fault occurs, the respective magnetic fluxes generated by the two coils connected in parallel offset each other, maintaining the voltage induced in the two coils at zero. In case of a fault, however, resistance is generated in the SE, preventing the magnetic fluxes generated by the two coils from offsetting each other. Thus, some voltage is induced in the two coils, and this starts to limit the fault current. DC short circuit tests were conducted, and the test results confirmed that the flux-coupled type SFCL with the two parallel connected coils was effective in limiting the fault current in a DC system. Additionally, the effect of the wiring direction of the two coils on the SFCL’s FCL performance and operating current, limiting impedance, and instantaneous power load was further analyzed, and as a result, the performance conditions of the SFCL in a DC system were determined. |
| first_indexed | 2024-03-09T00:44:46Z |
| format | Article |
| id | doaj.art-8879ef0211884668b17648a7d277dca5 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T00:44:46Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8879ef0211884668b17648a7d277dca52023-12-11T17:37:48ZengMDPI AGEnergies1996-10732021-02-01144109610.3390/en14041096DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC SystemYoung-Pil Kim0Seok-Cheol Ko1Division of Electrical and Electronic Control Engineering, Kongju National University, Chungnam 32586, KoreaIndustry-University Cooperation Foundation & Regional-Industrial Application Research Institute, Kongju National University, Chungnam 32586, KoreaIn this paper, the fault current limiting (FCL) characteristics of a flux-coupled type superconducting fault current limiter (SFCL) with parallel connection between two windings in a DC system were analyzed. The flux-coupled type SFCL was composed of two coils connected in parallel and a superconducting element (SE), which was connected in series with the secondary coil. The flux-coupled type SFCL works in DC systems similar to those in AC systems. Before a fault occurs, the respective magnetic fluxes generated by the two coils connected in parallel offset each other, maintaining the voltage induced in the two coils at zero. In case of a fault, however, resistance is generated in the SE, preventing the magnetic fluxes generated by the two coils from offsetting each other. Thus, some voltage is induced in the two coils, and this starts to limit the fault current. DC short circuit tests were conducted, and the test results confirmed that the flux-coupled type SFCL with the two parallel connected coils was effective in limiting the fault current in a DC system. Additionally, the effect of the wiring direction of the two coils on the SFCL’s FCL performance and operating current, limiting impedance, and instantaneous power load was further analyzed, and as a result, the performance conditions of the SFCL in a DC system were determined.https://www.mdpi.com/1996-1073/14/4/1096fault current limiting (FCL)instantaneous powerflux-coupled typesuperconducting fault current limiter (SFCL)DC systems |
| spellingShingle | Young-Pil Kim Seok-Cheol Ko DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System Energies fault current limiting (FCL) instantaneous power flux-coupled type superconducting fault current limiter (SFCL) DC systems |
| title | DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System |
| title_full | DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System |
| title_fullStr | DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System |
| title_full_unstemmed | DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System |
| title_short | DC Current Limiting Characteristics of Flux-Coupled Type SFCL Using Superconducting Element Connected in Parallel in a DC System |
| title_sort | dc current limiting characteristics of flux coupled type sfcl using superconducting element connected in parallel in a dc system |
| topic | fault current limiting (FCL) instantaneous power flux-coupled type superconducting fault current limiter (SFCL) DC systems |
| url | https://www.mdpi.com/1996-1073/14/4/1096 |
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