1. A Bidirectional DC Circuit Breaker Based on the Coupled Inductor for HVDC Applications.
- Author
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Taherzadeh, Erfan, Radmanesh, Hamid, Javadi, Shahram, and Gharehpetian, Gevork B.
- Subjects
FAULT currents ,HYBRID integrated circuits ,HIGH voltages - Abstract
With rapid development of high voltage direct current (HVDC) grids, hybrid circuit breakers (HCBs) have gained more attentions, due to their great ability for fault current interruption in HVDC grids. This paper proposes a novel low-cost HCB based on the coupled inductor, to be utilized in HVDC applications. To realize high current breaking capability with low cost, a coupled inductor in combination with the bridge-type circuit is utilized in the breaker branch. The bridge-type circuit is constructed by the series connection of a not pre-charged capacitor, thyristor, and diodes to provide bidirectional breaking ability. After an interruption, the capacitor in the breaker branch can be discharged quickly to guarantee that the proposed HCB is available for the next interruption. Detailed analysis and design equations are also provided to describe the operation of proposed HCB. The proposed HCB is simulated in Matlab/Simulink and simulations are used to analyze the performance of the HCB under the different conditions. Moreover, the proposed DCCB topology is validated using prototype experiments. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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