| Autor: |
Raghavendra I Venkata, B. Satish Naik, C. N. Muhammed Ajmal |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
IECON |
| DOI: |
10.1109/iecon48115.2021.9589385 |
| Popis: |
DC miniature circuit breakers (MCB’s) are being used widely in low voltage dc (LVDC) grids for protection of dc systems against short circuit and over current faults. DC-MCB interrupts the fault when the fault current reaches the preset value. MCBs take a longer time for the fault interruption due to the mechanical inertia between the breaker contacts and also due to high dc currents, which may create protection issues in highly critical systems. Hence, improvements in the performance of existing DC-MCB is proposed by connecting a parallel power semiconductor branch to it. In the proposed configuration, only a power device and its control circuit is added which helps in faster commutation and transfer of current. Proposed concept also improves reliability of the DC-MCB as there is no arcing in the fault interruption process. This paper presents the experimental validation of the proposed concept in a dc system with a nominal rating of 100VDC/6A. Paper also elucidates the performance comparison of both the proposed concept and the DC-MCB. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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