LAPSE:2023.33552
Published Article
LAPSE:2023.33552
DC Solid-State Circuit Breakers with Two-Winding Coupled Inductor for DC Microgrid
Jung-min Park, Hyung-jun Byun, Sung-hun Kim, Si-hwan Kim, Chung-yuen Won
April 21, 2023
Ensuring a protection scheme in a DC distribution system is more difficult to achieve against pole-to-ground faults than in AC distribution system because of the absence of zero crossing points and low line impedance. To complement the major obstacle of limiting the fault current, several compositions have been proposed related to mechanical switching and solid-state switching. Among them, solid-state circuit breakers (SSCBs) are considered to be a possible solution to limit fast fault current. However, they may cause problems in circuit complexity, reliability, and cost-related troubles because of the use of multiple power semiconductor devices and additional circuit configuration to commutate the current. This paper proposes a SSCB with a coupled inductor (SSCB-CI) that has a symmetrical configuration. The circuit is comprised of passive components like commutation capacitors, a CI, and damping resistors. Thus, the proposed SSCB-CI offers the advantages of a simple circuit configuration and fewer utilized power semiconductor devices than the other typical SSCBs in the DC microgrid. For the analysis, six operation states are described for the voltage across the main switches and fault current. The effectiveness of the SSCB-CI against the short-circuit fault is proved via simulation and experimental results in a lab-scale prototype.
Keywords
coupled inductor, DC microgrid protection, pole-to-ground fault protection, solid-state DC circuit breaker
Subject
Suggested Citation
Park JM, Byun HJ, Kim SH, Kim SH, Won CY. DC Solid-State Circuit Breakers with Two-Winding Coupled Inductor for DC Microgrid. (2023). LAPSE:2023.33552
Author Affiliations
Park JM: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
Byun HJ: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
Kim SH: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
Kim SH: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
Won CY: Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
Journal Name
Energies
Volume
14
Issue
14
First Page
4129
Year
2021
Publication Date
2021-07-08
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14144129, Publication Type: Journal Article
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LAPSE:2023.33552
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doi:10.3390/en14144129
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Apr 21, 2023
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