• 제목/요약/키워드: Discharge current

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A Measurement of Discharge Current of Plasma Display Panel as a cell structure (PDP cell 구조에 따른 방전전류 파형 계측)

  • Lee, W.G.;Ha, S.C.;Lee, S.H.;Shin, J.H.;Cho, J.S.;Park, C.H.
    • Proceedings of the KIEE Conference
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    • 1997.07e
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    • pp.1746-1748
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    • 1997
  • The surface discharge type ac plasma display panel(ac PDP) is a flat display devices using gas discharge. In ac PDP, parallel electrodes covered with dielectric layer are on a substrates. The discharge current characteristics are affected by cell structure. In this study, the relationship between the principal design factor and discharge characteristics is discussed, based on experiment, and the current waveform is measured by voltage detector and storage O.S.C. as a parameter of design factor, e.g., electrode gap and width.

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Estimation of Discharge Current Waveshapes in Short Gap Discharge by One Antennal Method (1 안테나 법에 의한 미소 간극의 방전 전류파형 추정)

  • 김기채;이광식;이동인
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.9 no.4
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    • pp.499-505
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    • 1998
  • This paper presents the method for an estimation of discharge current waveshapes in short gap discharge by a radiated electromagnetic field. The method of currentwaveform estimation described is using the one antenna method(single field method) with a measured electric or magnetic fields at given field point by a time domain antenna. In order to verify the availability of the estimated theory, the discharge current waveshape estimation was performed by one antenna method using the measured electric fields of Wilson & Ma and compared with experiments.

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The Characteristic of voltage and Current in Discharge-pumped Excimer Laser with Charge Transfer Type (용량이행형 방전여기 엑사이머 레이저의 전압 전류 특성)

  • Jung, Jae-Keun;Choi, Boo-Yeon;Lee, Choo-Hie
    • Proceedings of the KIEE Conference
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    • 1987.11a
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    • pp.405-407
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    • 1987
  • We calculated the discharge resistance, which is determined by plasma dynamics, of the discharge pumped excimer lasers with charge-transfer type. And investigated the characteristic of discharge voltage and current using EMIP.

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Development of a Flow Sensor Using DBD (Dielectric Barrier Discharge) (DBD (Dielectric Barrier Discharge)를 이용한 유량 센서 개발에 관한 연구)

  • Kim, Tae-Hoon;Kim, Sung-Jin
    • Proceedings of the KSME Conference
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    • 2008.11b
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    • pp.2076-2081
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    • 2008
  • In this study, a new concept of a flow sensor is developed using dielectric barrier discharge (DBD). Current of DBD generated between two electrodes is changed with varying flow rates. Therefore, it is possible to measure the flow rate by correlating generated DBD current with flow rates. The effects of flow rate, frequency, channel height, diameter of electrodes and distance between electrodes on the performance of the flow sensor using DBD are experimentally investigated.

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A Study of Measurement of Minimum Ignition Energy for Pine Tree Dust on Electrostatic Discharges (정전기 방전시의 소나무목분의 최소착화에너지 측정에 관한 연구)

  • 이동훈;박한석
    • Journal of the Korean Society of Safety
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    • v.13 no.3
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    • pp.74-79
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    • 1998
  • To establish measuring method for minimum ignition energy of explosive powders caused by electrostatic discharge, A measuring method(Hartman) using a very small quantity of pine tree testing powder was proposed, and the influence of discharge current limiting resistance connected in series into a capacitive discharge circuit on ignition energies of explosive powders was investigated. As a result the minimum ignition energy was 42.25mJ when discharge current limiting resistance 300 $k\Omega$.

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Observation of Negative Resistance Region in Voltage-current Curve of Hollow Cathode Discharge (속이 빈 원통형음극 방전의 전압-전류 곡선에서 음 저항 영역 관찰)

  • Lee, Jun-Hoi;Lee, Sung-Jik
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.18 no.9
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    • pp.870-875
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    • 2005
  • We measured the optogalvanic signal and discharge voltage-current(V-I) curve under the two different discharge conditions with different buffer gases, Ar, and Ne. When the Gd was used as a cathode material at low discharge current less than 10mA, a significant change was observed in the current-voltage curve. Time resolved optogalvanic signal measurement were measured by the diode laser of which wavelengths correspond to metastable transition line of these gases (Ar, Ne). From these measurements, we found that the characteristics of the V-I curve strongly depend on the Penning ionization process.

A Study on the Earthing System (접지시스템에 관한 연구)

  • Seol, Dong-Hwa;Kim, Myeong-Saeng;Kim, Chang-Bong;Woo, Jea-Wook
    • 한국정보통신설비학회:학술대회논문집
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    • 2009.08a
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    • pp.375-378
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    • 2009
  • This paper will arrange and classify the earthing system by the latest developed technique tendency, and suggest how to solve the problem of a current earthing system. The 3rd generation earthing system is environment-friendly and designed to use discharge electrodes, catalysts and heat rays. A discharge current has increased by 31 [A] in the 3rd generation of earthing system compared to the 2nd one and it is 25 times faster. This system is not buried under but built on the ground. It solves the problems that the current system has; expenses, time, area and pollutions followed by the construction.

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A Study on the Displacement and Discharge Current Waveform in AC PDP (AC PDP의 변위전류 및 방전전류에 관한 연구)

  • Lee, Woo-Geun;Ha, Seok-Cheon;Lee, Sung-Hyun;Cho, Jung-Soo;Park, Chung-Hoo
    • Proceedings of the KIEE Conference
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    • 1997.11a
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    • pp.385-387
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    • 1997
  • This paper deals with the relationships between discharge current wave form and the structure of AC PDP cells. The Paschen minimum can be found in the range of $200{\sim}300\;torr$ under the condition of electrode width of $300{\mu}m$ and $100{\mu}m$ electrode gap. Furthermore, the charge current does not vary with the gas pressure, whereas the time delay in the discharge inception voltage decreased both peak and r.m.s discharge current increase with gas pressure and electrode width.

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Effect of tidal current turbine using the discharge gate of Siwha tidal power plant on the tidal power generating (시화조력발전소 방류 수문을 활용한 조류발전이 조력발전에 미치는 영향)

  • Kim, Youngjoon;Kim, Yongyeol;Cho, Yong;Ko, Jaemyoung
    • 한국신재생에너지학회:학술대회논문집
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    • 2010.06a
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    • pp.236.2-236.2
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    • 2010
  • The tidal current power is the power plant by installing the turbine or rotor where the tidal speed is fast. This system converting the horizontal movement to rotating energy. Tidal power turbine is needed for the dam to utilize the pressure difference. However, tidal current power using the only flow. The tidal current power was evaluated as the impact on the marine environment surrounding was less and the development of eco-friendly way. In this article, we calculated the effect of tidal current turbine on the tidal power generating by mean of CFD. With these calculated results, we checked the possibility of tidal current power using tidal power plant the discharge gate.

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Experiment and Implementation of NiMH Battery Model for Autonomie Environment (Autonomie에 적용 가능한 NiMH 배터리 모델 실험 및 구현)

  • Lee, Jong-Kyung;Kim, Jae-Eon;Cha, Han-Ju
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.10
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    • pp.1875-1880
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    • 2011
  • This paper proposes a battery model applicable to Autonomie environment. Also, a various of experiment is implemented for validation. The proposed battery model modifies Randles equivalent circuit and battery parameters are extracted from pulsed current tests. The parameters are two-dimensional function of current and SOC(State of Charge). The battery model is developed in the Matlab/Simulink and is implemented for NiMH Panasonic HHR650D and compared with pulsed current discharge curves. The simulation results validate the accuracy of the proposed model and the model is also tested by adding it on Autonomie for HEV application. Constant current charge/discharge, pulsed current test that can be used to extract battery parameter are performed and test results are used to build up the proposed battery model for Autonomie.