Design of Trigger Circuit for High-Power Gas Switch Based on Flyback Circuit

Shin Kim; Jung Soo Bae; Hyoung Suk Kim; Chan Hun Yu; Byung Joon Lee; Suk Ho Ahn; Sung Roc Jang

doi:10.1109/TPS.2019.2912528

Design of Trigger Circuit for High-Power Gas Switch Based on Flyback Circuit

Shin Kim
, Jung Soo Bae
, Hyoung Suk Kim
, Chan Hun Yu
, Byung Joon Lee
, Suk Ho Ahn
, Sung Roc Jang

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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.

Original language	English
Article number	8715386
Pages (from-to)	4481-4487
Number of pages	7
Journal	IEEE Transactions on Plasma Science
Volume	47
Issue number	10
DOIs	https://doi.org/10.1109/TPS.2019.2912528
State	Published - Oct 2019
Externally published	Yes

Funding

Manuscript received December 27, 2018; revised March 10, 2019; accepted April 14, 2019. Date of publication May 15, 2019; date of current version October 9, 2019. This work was supported in part by the Korea Electrotechnology Research Institute (KERI) Primary Research Program through the National Research Council of Science and Technology (NST) funded by the Ministry of Science and ICT (MSIT) under Grant (19-12-N0101-12) and in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education under Grant NRF-2017R1D1A1B03033192. The review of this paper was arranged by Senior Editor R. P. Joshi. (Corresponding author: Sung-Roc Jang.) S. Kim and J.-S. Bae are with the Energy and Power Conversion Engineering, University of Science and Technology (UST), Daejeon 34113, South Korea (e-mail: skim90@keri. re.kr; jsbae0324@ust. ac.kr).

Keywords

Flyback circuit
high-power gas switch
pulse power supplies
triggered vacuum switch (TVS)

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10.1109/TPS.2019.2912528

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title = "Design of Trigger Circuit for High-Power Gas Switch Based on Flyback Circuit",

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.",

keywords = "Flyback circuit, high-power gas switch, pulse power supplies, triggered vacuum switch (TVS)",

author = "Shin Kim and Bae, \{Jung Soo\} and Kim, \{Hyoung Suk\} and Yu, \{Chan Hun\} and Lee, \{Byung Joon\} and Ahn, \{Suk Ho\} and Jang, \{Sung Roc\}",

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AU - Ahn, Suk Ho

AU - Jang, Sung Roc

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N2 - 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.

AB - 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.

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Design of Trigger Circuit for High-Power Gas Switch Based on Flyback Circuit

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