1. Design of Trigger Circuit for High-Power Gas Switch Based on Flyback Circuit.
- Author
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Kim, Shin, Bae, Jung-Soo, Kim, Hyoung-Suk, Yu, Chan-Hun, Lee, Byung-Joon, Ahn, Suk-Ho, and Jang, Sung-Roc
- Subjects
ENERGY storage ,THYRISTORS ,GASES ,SWITCHING circuits ,LOGIC circuits ,POWER resources ,ELECTRIC transformers ,PULSE generators - Abstract
This paper proposes a flyback-circuit-based design of a trigger circuit for a high-power gas switch. By incorporating a flyback circuit in a high-power gas switch, it is possible to generate a high step-up ratio and high-voltage pulse by using a transformer. Furthermore, simple trigger circuit having the minimum possible number of components (transformer and switch) can be realized. When an inductor is used as an energy storage element, energy is stored as a current source, and thus, the element can operate reliably when low impedance exists between the trigger node of the switch after triggering. According to the fundamental operating principle of a flyback circuit, the proposed trigger circuit is designed considering the maximum trigger voltage and energy required for a high-power gas switch. To verify the proposed design procedure and feasibility of the trigger circuit, a compact trigger circuit (7.5 kV, 1.3 mJ/pulse) is simulated using the PSpice program and implemented. Based on this compact circuit, a trigger circuit (20 kV, 100 mJ/pulse) for a triggered vacuum switch (TVS) is developed, and the tests with an actual TVS (3.3 kJ) are carried out. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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