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고조파 공진 억제를 위한 완충부하 투입량 분석에 관한 연구
임찬호(Chan-Ho Lim),이경섭(Kyeong-Seob Lee),유원근(Won-Kun Yu),이흥재(Heung-Jae Lee) 대한전기학회 2010 전기학회논문지 Vol.59 No.2
During the restoration process of primary restorative transmission system, the over voltage may happen due to nonlinear interaction between the unloaded transformer and the transmission system. This over voltage is caused by harmonic resonance and can be prevented by damping loads that are connected before restoration process of primary restorative transmission system. But it is very difficult to predict the occurrence possibility of the harmonic resonance previously. This paper analyzes the relationship between the harmonic resonance and the amount of damping loads to prevent the harmonic resonance. This paper calculates the minimum amount of damping loads to prevent harmonic resonance while changing the length of primary restorative transmission line. And this paper confirmed that the amount of damping loads is not proportional to length of transmission line. The result of this paper will be used as important experiment data to predict the occurrence possibility of harmonic resonance previously.
손현성,임찬호,염정덕,Son, Hyeon-Sung,Lim, Chan-Ho,Ryeom, Jeong-Duk 한국조명전기설비학회 2004 조명·전기설비학회논문지 Vol.18 No.3
플라즈마 디스플레이 패널의 구동실험을 용이하게 할 수 있는 구동실험장치를 개발하였다. 이 장치는 펄스의 타이밍을 컴퓨터상에서 설계하고 시뮬레이션 할 수 있고 이렇게 설계된 타이밍을 사용하여 PLD에 프로그래밍하고 고전압 FET 스위치들을 제어할 수 있다. 이 장치는 기존의 로직 gate IC를 이용하여 하드웨어적으로 스위칭 로직을 구현하는 것 보다 펄스로직의 설계시간을 단축시킬 수 있으며 구동방식의 변경에 따른 펄스의 타이밍 변경도 용이하다. 이 구동장치를 가지고 상용화 되어있는 ADS 구동방식을 구현하여 3전극 AC PDP의 계조구현 실험을 하였다. We have developed a new experimental driving system in order to make an easier drive experiment of PDP. By using the system, we can design and simulate the timing of the pulse in computer environment. As a result of the designed timing, we are able to program at PLD(Programmable Logic Device) and control high-voltage FET switches. The new system can reduce the time of the pulse compared with the previous logic gate ICs that realizes switching logic through hardware. In addition, it is a much easier way of changing the timing of the pulse due to the change of the driving method. By using the developed driving system we experimented on two different things- First, the realization of ADS Driving Method that run commonly; Second, gray scale realization on the three electrodes AC PDP.