http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정연하,장태준,손길목,노영수,곽희로,Jung, Yeon-Ha,Jang, Tae-Jun,Shong, Kil-Mok,Roh, Young-Su,Kwak, Hee-Ro 한국조명전기설비학회 2007 조명·전기설비학회논문지 Vol.21 No.2
본 논문에서 전극간 표면누설에 의한 탄화도전로의 형성과 방향성에 대해 연구하였다. 표면에서 트래킹의 특성은 노출된 충전부사이에서 절연파괴되었다. 고속카메라시스템을 이용하여 전극간 방전과 지락, on/off 서어지에서 발생되는 아크성장 메커니즘을 촬영하고, 결과를 분석하였다. 향후 아크제어를 통한 에너지 이용기술의 적용이 기대된다. In this paper, we are studied on the direction and formation of carbonized conductive path according to surface leakage current between electrodes. The characteristics of the tracking as surface is broken down between exposed live parts. Using the HSIS(high speed imaging system. 100,000[fps], redlake ltd., USA), it took photographs by arc growth mechanism occurred in on/off surge, ground fault and discharge between electrodes. Then the results was analyzed. Hereafter, it expected effects that application of energy utility technology through the arc control.
정연하,장태준,곽희로,노영수,최충석,Jung, Yeon-Ha,Jang, Tae-Jun,Kwak, Hee-Ro,Roh, Young-Su,Choi, Chung-Seog 한국조명전기설비학회 2005 조명·전기설비학회논문지 Vol.19 No.5
In this paper the earth structures of four cities are analysed on the basis of the measured soil resistivity and the characteristics of a grounding system is examined. As a result it is revealed that the soil resistivity has an effect on touch voltage and step voltage, which are directly related to safety, as well as ground resistance. 본 논문에서는 전국4개 도시에서 측정한 대지 저항률을 바탕으로 지층구조를 분석하고 접지시스템의 특성을 조사하였다. 그 결과 대지 저항률은 접지 저항 뿐만 아니라 안전과 직접 관련되는 지표면 전위, 접촉전압, 보폭전압에 영향을 미치는 것으로 밝혀졌다.
정연하(Yeon-Ha Jung),이재화(Jae-Wha Lee),장태준(Tae-Jun Jang),노영수(Young-Su Roh),곽희로(Hee-Ro Kwak),최충석(Chung-Seog Choi) 한국조명·전기설비학회 2004 한국조명·전기설비학회 학술대회논문집 Vol.2004 No.5월
As electric shock accident take place frequently, electrical safety is extremely important to prevent them. This paper describes the characteristics of electric shock. In order to examine it, an experimental apparatus including a model of a human body is fabricated and the magnitude of the voltage held by the model is measured under several conditions as follows; (1) the model is not contacted to an electric pole and a step voltage does not exist. (2) the model is not contacted to an electric pole and a step voltage exists. (3) the model is contacted to an electric pole and a step voltage does not exist. (4) the model is contacted to an electric pole and a step voltage exists. As a result of the experiment, it is found that the voltage held by the model depends on the step voltage as well as the voltages applied to the electric pole.
변속기 발진클러치 마찰재의 온도예측모델 개발에 대한 연구
정연하(Yeon-Ha Jung),정인호(In-Ho Jung),김한솔(Han-Sol Kim),오상민(Sang-Min Oh),배만용(Man-Yong Bae),류완식(Wan-Sik Ryu) 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.11
In recent vehicles, the launch clutch is mainly used in hybrid or DCT transmissions instead of torque converter which is traditional starting device, as fuel economy is important. The clutch consists of several friction materials, lubricating and cooling by transmission fluid. Clutch slip control during gradient launch causes heat to be generated from the friction materials and may cause the clutch to be damaged. In order to protect the friction materials, it is necessary to predict the temperature of the friction materials during slip control to limit clutch operation if necessary. In this paper, we developed a simulation model for predicting clutch temperature using experimental method. The developed temperature model verified for accuracy by transient (at engage clutch) test and the temperature model error was within 10% of the maximum temperature compared to the experimental result Also, we confirmed accuracy of temperature model due to slope of engage, flow rate and temperature of fluid.