New thyristor‑based hybrid DC circuit breaker with reverse injection of resonant current


Vol. 22, No. 11, pp. 1836-1847, Nov. 2022
10.1007/s43236-022-00511-0




 Abstract

This paper proposes a thyristor-based hybrid DC circuit breaker (HDCCB), which is composed of a fast mechanical circuit breaker and an LC resonant circuit with thyristor switches. The proposed HDCCB provides a zero-crossing point for fault current by injecting a resonant current in the reverse direction of the fault current. The proposed HDCCB has a low conduction loss in normal operation using a mechanical circuit breaker, and it offers the advantages of low cost, high reliability, and large capacity using thyristor switches instead of IGBT switches. It also has the design flexibility to adjust the magnitude of the injection current depending on the fault current level. A bidirectional HDCCB is also proposed by adding several components to the developed unidirectional HDCCB, which can off er compact system size and low system cost. Design considerations of the proposed structure are discussed. The validity of the proposed HDCCB is verifi ed by simulation and experimental results.


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Cite this article

[IEEE Style]

J. Cha, E. Lee, B. Han, K. Lee, B. Han, "New thyristor‑based hybrid DC circuit breaker with reverse injection of resonant current," Journal of Power Electronics, vol. 22, no. 11, pp. 1836-1847, 2022. DOI: 10.1007/s43236-022-00511-0.

[ACM Style]

Jee-Yoon Cha, Eui-Jae Lee, Byeol Han, Kyo-Beum Lee, and Byung-Moon Han. 2022. New thyristor‑based hybrid DC circuit breaker with reverse injection of resonant current. Journal of Power Electronics, 22, 11, (2022), 1836-1847. DOI: 10.1007/s43236-022-00511-0.