Jee-Yoon Cha, Eui-Jae Lee, Byeol Han, Kyo-Beum Lee, and Byung-Moon Han, "New Thyristor-based Hybrid DC Circuit Breaker with Reverse Injection of Resonant Current," Journal of Power Electronics, in press. -SCIE > Paper

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Paper

International Journals Jee-Yoon Cha, Eui-Jae Lee, Byeol Han, Kyo-Beum Lee, and Byung-Moon Han, "New Thyristor-based Hybrid DC Circuit Breaker with Reverse Injection of Resonant Current," Journal of Power Electronics, in press. -SCIE

2022

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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 of fault current by injecting a resonant current to the reverse

direction of the fault current. The proposed HDCCB has a low conduction loss in normal operation by using the mechanical circuit breaker and it

offers advantages of low cost, high reliability, and large capacity by using thyristor switches instead of IGBT switches. It also has a design flexibility to

adjust the magnitude of 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 offer compact system size and low system cost. The design considerations are discussed. The

validity of the proposed HDCCB is verified by simulation results and experimental results.

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