Research on Breaking Function for Two Bidirectional Γ-Source DC Solid-State Circuit Breakers

Song, Weizhang; Wang, Chen; Han, Zhenhong; An, Ning; Xue, Dan; Wheeler, Patrick

Abstract

This paper proposed two bidirectional Γ-source DC circuit breakers (Bi-ΓDCCB1 and Bi-ΓDCCB2) only using diodes and mechanical switches to construct bidirectional topology without introducing passive components, leading to owning a simpler and smaller structure in terms of bidirectional DC circuit breakers. Both of these proposed circuit breakers have the advantages of common ground between source and load, accurately and quickly isolate bidirectional faults. Meanwhile, the operation modes including steady-state, fault isolation, resonance, inductance discharge of two bidirectional Γ-source circuit breaker topologies have been analyzed, model of the bidirectional Γ-source circuit breaker at different stages have been established, and the turn-off time of thyristor, the minimum detectable fault admittance rise rate and the device parameters design of circuit breaker are calculated in detail. Then, this paper provides a multidimensional and systematic comparison and summary of the circuit breakers studied by previous scholars. Finally, the experimental results have verified that the two proposed bidirectional DC circuit breakers can achieve effective bidirectional autonomous breaking and bidirectional manual breaking performance in short-circuit faults, and have the ability to identify load step changes.

Citation

Song, W., Wang, C., Han, Z., An, N., Xue, D., & Wheeler, P. (2024). Research on Breaking Function for Two Bidirectional Γ-Source DC Solid-State Circuit Breakers. IEEE Journal of Emerging and Selected Topics in Power Electronics, 12(4), 3516-3528. https://doi.org/10.1109/jestpe.2024.3399478

• Journal Article Type: Article
• Acceptance Date: Feb 1, 2024
• Online Publication Date: May 14, 2024
• Publication Date: 2024-08
• Deposit Date: Jun 12, 2024
• Publicly Available Date: Jun 14, 2024
• Journal: IEEE Journal of Emerging and Selected Topics in Power Electronics
• Print ISSN: 2168-6777
• Electronic ISSN: 2168-6785
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 4
• Pages: 3516-3528
• DOI: https://doi.org/10.1109/jestpe.2024.3399478
• Keywords: Circuit breakers , Steady-state , Capacitors , Topology , Circuit faults , Impedance , Thyristors , Bidirectional DC circuit breaker , Z-source circuit breaker , Γ-source circuit breaker , Coupled inductor , DC protection systems
• Public URL: https://nottingham-repository.worktribe.com/output/34875037
• Publisher URL: https://ieeexplore.ieee.org/document/10530316