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절연 가스에 따른 초고속 Marx generator의 상승 시간 특성
두진석(Jin-Suk Doo),방정주(Jung-Ju Bang),김광용(Kwang-Yong Kim),황선묵(Sun-Mook Hwang),서유진(Yu-Jin Seo),허창수(Chang-Su Huh) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
Recently, there has been considerable interest in electromagnetic pulse (EMP) source for no lethal directed energy weaponry applications. The compactness of the Marx generator, coupled with its ability to be powered by battery technology, makes it a viable handled impulse source. The marx generator has 2 stages. Each stage was constructed one charging capacitor, two electrodes and one charging resistor. A inductance structure is used in order to improve the switching performances fo the whole generator. The experiments of rise time in pure gas and mixtures of gases were described. The experimental results show that the rise time characteristics of the marx generator can be controlled through varying insulation gas.
초고속 Marx Generator의 N₂, SF₆, N₂-SF₆ 혼합가스에 따른 출력 특성 연구
두진석(Jin-Suk Doo),한승문(Seung-moon Han),허창수(Chang-Su Huh),최진수(Jin-Soo Choi) 대한전기학회 2010 전기학회논문지 Vol.59 No.10
The application field of the pulse power is very wide. Recently, Pulse power technologies take a large place in several applications. Then, many civil and military applications proceed. Marx generator is widely used in high voltage applications. Marx generator is widely used in high voltage applications, such as eletromagnetic wave and power lasers. This paper, we described about the high voltage pulse generator. A compact size high voltage pulse generator with nanosecnd rise time has been fabricated and investigated experimentally. The marx generator has 2 stages. Each stage was constructed one charging capacitor, two electrodes and one charging resistor. A inductance structure is used in order to improve the switching performances fo the whole generator. The experiments of rise time in pure gas and mixtures of gases were described. We tested the Marx generator at different insulation gas. the results show that the dielectric strength of the N₂-SF? mixture was significantly increased compared with pure nitrogen gas. The experimental results show that the rise time characteristics of the Marx generator can be controlled through varying insulation gas.
고출력 임펄스 전압 측정을 위한 수저항 분압기 특성 연구
두진석(Jin-Suk Doo),한승문(Seung-moon),방정주(Jung-Ju Bang),장동관,이예나(Ye-Na Lee),허창수(Chang-Su Huh) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
Accurate high voltage measurements are required by the electric power industry for instrumentation, metering, and testing applications. Similarly, there is a need for accurate measurements of high voltages in pulsed power machines to monitor and optimize machine operation. High-voltage, low-inductance resistor are commonly employed as fast voltage-divider probes, charging-trigger resistors in Marx generator, dummy loads for pulsed power systems, absorbers of reflected pulses, and energy dumps. Aqueous solution resistors have a number of advantage as compared to resistors of other type. Aqueous solution resistors are technically superior to wirewound, film, and composition resistors and less expensive than ceramic resistors.
전자파 잔향실의 교반기 매개변수에 따른 전계 균일도 향상 방안
김광용(Kwang-Yong Kim),홍주일(Joo-Il Hong),한승문(Seung-Moon Han),두진석(Jin-Suk Doo),허창수(Chang-Su Huh),이기택(Ki-Taek Lee) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
Reverberation chamber have become a common tool in radiated susceptibility and emission testing of electronic equipment. In a reverberation chamber, internal electromagnetic fields are mixed by metallic stirrer. Due to elimination of Polarization characteristic in reverberation chamber, electromagnetic wave reached to EUT all aspect angle. Hence, Field distribution in overmode reverberation chamber can be presented by chi-square distribution. Field uniformity in reverberation chamber have to satisfy standard deviation below 3㏈ and is influenced by mechanical stirrer. This paper investigates relationship between change of stirrer parameter and field uniformity in reverberation chamber.