Hybrid co‑charging branch DC circuit breaker

Can Ding; Yiji Shi; Yinbo Ji; Yiting Tian

Hybrid co‑charging branch DC circuit breaker

Vol. 25, No. 12, pp. 2351-2361, Dec. 2025

10.1007/s43236-025-01049-7

Hybrid DC circuit breaker

Pre-charging

Common charging branch

Fault current limiting

Abstract

To solve the problem of the high cost of fault circuit breakers in flexible DC grids, hybrid co-charging branch DC circuit breaker (CCB-HCCBDB) is proposed in this paper. The proposed circuit breaker transfers energy into capacitors or is consumed by resistors and inductors by conducting capacitor, resistor, and inductor branches in the current-limiting stage. In addition, a grounding branch is introduced, which reduces the breaking time of the circuit breaker and the energy dissipated by the surge arrester. Furthermore, the multiplexing of the charging branch and current-limiting branch reduces the manufacturing cost of the circuit breaker. First, the topology and working process of the proposed circuit breaker are described, and a single-ended line short-circuit system is designed based on the proposed topology. Second, the fault development process is deduced, and the device parameters are designed. Finally, a model is built in MATLAB/Simulink for simulation, and a comparative analyses of the validity, performance, and number of components of the proposed scheme is carried out with other schemes. The obtained results verify the reliability of the proposed scheme.

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Cite this article

[IEEE Style]

C. Ding, Y. Shi, Y. Ji, Y. Tian, "Hybrid co‑charging branch DC circuit breaker," Journal of Power Electronics, vol. 25, no. 12, pp. 2351-2361, 2025. DOI: 10.1007/s43236-025-01049-7.

[ACM Style]

Can Ding, Yiji Shi, Yinbo Ji, and Yiting Tian. 2025. Hybrid co‑charging branch DC circuit breaker. Journal of Power Electronics, 25, 12, (2025), 2351-2361. DOI: 10.1007/s43236-025-01049-7.