Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor
This paper introduces an innovative non-destructive device designed to detect and limit short-circuit currents in LVDC grids. The proposed solution utilizes a transformer fully saturated by a permanent magnet during normal operation. When a short-circuit condition occurs, the transformer desaturates...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Open Journal of Power Electronics |
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| Online Access: | https://ieeexplore.ieee.org/document/10945435/ |
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| _version_ | 1850232270887059456 |
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| author | Johannes Gehring Raffael Schwanninger Alexander Nowak Bernd Wunder Vincent Lorentz Martin Marz |
| author_facet | Johannes Gehring Raffael Schwanninger Alexander Nowak Bernd Wunder Vincent Lorentz Martin Marz |
| author_sort | Johannes Gehring |
| collection | DOAJ |
| description | This paper introduces an innovative non-destructive device designed to detect and limit short-circuit currents in LVDC grids. The proposed solution utilizes a transformer fully saturated by a permanent magnet during normal operation. When a short-circuit condition occurs, the transformer desaturates, reducing the rise in current and triggering the detection and protection mechanism. The structure and functionality of the device, along with the design criteria, are discussed. Additionally, optimization measures are presented, examined, and validated. Experimental results from the advanced device prototype demonstrate its effectiveness in detecting and limiting overcurrents. The device features a stable tripping threshold and can safely and reliably interrupt even low time constant capacitive short-circuits. This hardware-based detection solution is ideally suited for installation in a semiconductor circuit breaker. |
| format | Article |
| id | doaj-art-18373c558c4b43c480eba2b19e32a331 |
| institution | OA Journals |
| issn | 2644-1314 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Power Electronics |
| spelling | doaj-art-18373c558c4b43c480eba2b19e32a3312025-08-20T02:03:15ZengIEEEIEEE Open Journal of Power Electronics2644-13142025-01-01652453610.1109/OJPEL.2025.355579710945435Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated InductorJohannes Gehring0https://orcid.org/0000-0002-2816-5910Raffael Schwanninger1https://orcid.org/0009-0000-5010-1406Alexander Nowak2https://orcid.org/0000-0001-7329-5768Bernd Wunder3https://orcid.org/0009-0007-3543-4158Vincent Lorentz4https://orcid.org/0000-0003-2391-4406Martin Marz5https://orcid.org/0000-0003-2444-0484Fraunhofer Institute for Integrated Systems and Device Technology IISB, Erlangen, GermanyInstitute of Power Electronics at the Friedrich-Alexander-Universität Erlangen-Nürnberg, Nuremberg, GermanyInstitute of Power Electronics at the Friedrich-Alexander-Universität Erlangen-Nürnberg, Nuremberg, GermanyFraunhofer Institute for Integrated Systems and Device Technology IISB, Erlangen, GermanyElectronics for Electrical Energy Storage at the University of Bayreuth, Bayreuth, GermanyInstitute of Power Electronics at the Friedrich-Alexander-Universität Erlangen-Nürnberg, Nuremberg, GermanyThis paper introduces an innovative non-destructive device designed to detect and limit short-circuit currents in LVDC grids. The proposed solution utilizes a transformer fully saturated by a permanent magnet during normal operation. When a short-circuit condition occurs, the transformer desaturates, reducing the rise in current and triggering the detection and protection mechanism. The structure and functionality of the device, along with the design criteria, are discussed. Additionally, optimization measures are presented, examined, and validated. Experimental results from the advanced device prototype demonstrate its effectiveness in detecting and limiting overcurrents. The device features a stable tripping threshold and can safely and reliably interrupt even low time constant capacitive short-circuits. This hardware-based detection solution is ideally suited for installation in a semiconductor circuit breaker.https://ieeexplore.ieee.org/document/10945435/Current measurementDC circuit breakersDC power systemsfault current limitersovercurrent protectionprotection |
| spellingShingle | Johannes Gehring Raffael Schwanninger Alexander Nowak Bernd Wunder Vincent Lorentz Martin Marz Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor IEEE Open Journal of Power Electronics Current measurement DC circuit breakers DC power systems fault current limiters overcurrent protection protection |
| title | Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor |
| title_full | Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor |
| title_fullStr | Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor |
| title_full_unstemmed | Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor |
| title_short | Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor |
| title_sort | method for detection and limitation of short circuit currents for semiconductor circuit breakers in lvdc grids using a pre saturated inductor |
| topic | Current measurement DC circuit breakers DC power systems fault current limiters overcurrent protection protection |
| url | https://ieeexplore.ieee.org/document/10945435/ |
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