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김남군(Nam-Goon Kim),양종경(Jong-Kyung Yang),이주호,이종찬(jong-chan Lee),박대희(Dae-Hee Park) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
In recent, there have been several developments in lamp technology that promise savings in electrical power consumption and improved quality of the lighting space. Above all, the advantage of ring-shaped electrodeless fluorescent lamp is the removal of internal electrodes and heating filaments that are a light-limiting factor of conventional fluorescent lamps. Therefore, the life time of ring-shaped electrodeless fluorescent lamps is substantially higher than that of conventional fluorescent lamps and last up to 60,000 hours and is intended as a high efficacy replacement for the incandescent reflector lamp in many applications. In this paper, when appling the electrodeless lamp in luminaire, We analyzed change of optical and electrical characteristics.
세라믹 메탈할리이드 램프의 전자식 안정기 구동을 통한 전기적 광학적 특성에 관한 연구
金南君(Nam-Goon Kim),梁種璟(Jong-Kyung Yang),李主?(Joo-Hoo Lee),張赫晉(Hyeok-Jin Jang),朴大熙(Dae-Hee Park) 대한전기학회 2008 전기학회논문지 Vol.57 No.12
The use of arc tubes made of ceramic material further enhanced some of the metal halide lamp's properties. These properties translate into higher efficacy with better color rendering, stable color through lamp long life. Recently, due to an increase in the application of the ceramic metal-halide lamp, the study for the property etc. according to Ballast's driving scheme and the study for arc tube material, optimization of gas and so on are being proceeded to improve the property of the lamp. Especially, to control ceramic metal-halide lamp, the vigorous study and practical use with respect to Electronic Ballast, which has been improved in the disadvantages of the conventional Magnetic Ballast are made. In this paper, Electrical, optical and thermal characteristics are analyzed by comparing magnetic ballast with electronic ballast.
둥근형 무전극 램프의 페라이트 코어와 냉점의 온도 의존성
金南君(Nam-Goon Kim),梁種璟(Jong-Kyung Yang),李鐘燦(Jong-Chan Lee),韓后錫(Hoo-sek Han),朴志植(Jee-Sik Park),朴大熙(Dae-Hee Park) 대한전기학회 2008 전기학회논문지 Vol.57 No.5
Generally Lighting system consists of lamp and luminaire. When a fluorescent lamp is installed in luminaire, power and light output is changed by ambient temperature. Particularly electrodeless lamp depends on the changes that are mercury pressure with amalgam temperature and magnetic properties with ferrite temperature. It has finally influence on optical efficiency In this study, the temperature change of ferrite and cold spot, vessel are measured at transitional state and then same characteristics are measured with increase of ambient temperature. At transitional state, luminous flux is related to temperature change of cold spot that compare with behavior of mercury pressure and light output. At increase of ambient temperature, we analyzed change that efficiency and electrical, optical characteristics of elecrodeless lamp are related to ferrite core and cold spot temperature. Additionally, spectrum, color temperature and coordination are measured to check that is relation with ambient temperature.
이성진,김남군,이종찬,박노준,박대희,Lee, Seong-Jin,Kim, Nam-Goon,Lee, Jong-Chan,Park, Noh-Joon,Park, Dae-Hee 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.7
This paper had mentioned about CCP light source application for increasing the efficiency of Xe lamp the mercury-free lamp. In order to increase the efficiency of Xe EEFL, we designed and manufactured the lamp used by mixture gas of Xe, Ne and He. Also, we have analyzed the electrical and optical properties with the firing voltage, sustain voltage, paschen's curve, wall charge, and capacitance. As a result, the firing voltage decreased by increasing the ration of mixture gas. and, It is owing to include the gas with high ionization energy. The firing voltage decreased in condition happening the penning effect, Because the ion of metastable state created from penning effect, Which can encourage the ionization phenomena. Also, the wavelength of 467.12 is increase. because of the energy transition in the wavelength of 147 nm. therefore, we can know about the affection of phosphor with UV emission properties. Through an experiment, Xe 100 % and Xe 75 % confirmed same spectrum properties by each mixture gas ratio. In the case of Xe 50 %, spectrum properties appeared Xe discharge and Ne-He discharge. That analyzed an electrical and optical properties. Therefore, confirmed that is excellent because properties of firing voltage, wall charge, capacitance in Xe 50 %, Ne : He = 9 : 1. We offered parameter in inverter manufacture and lamp manufacture by electrical and optical properties.
둥근형 무전극 램프의 페라이트 코어와 냉점의 온도 의존성
장혁진,양종경,김남군,정영일,박대희,Jang, Hyeok-Jin,Yang, Jong-Kyung,Kim, Nam-Goon,Jung, Young-Il,Park, Dae-Hee 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.12
Generally Lighting system consists of lamp and luminaire. When a fluorescent lamp is installed in luminaire, power and light output is changed by ambient temperature. Particularly electrodeless lamp depends on the changes that are mercury pressure with amalgam temperature and magnetic properties with ferrite temperature. It has finally influence on optical efficiency. In this study, the temperature change of ferrite and cold spot, vessel are measured at transitional state and then same characteristics are measured with increase of ambient temperature. At transitional state, luminous flux is related to temperature change of cold spot that compare with behavior of mercury pressure and light output. At increase of ambient temperature, we analyzed change that efficiency and electrical, optical characteristics of elecrodeless lamp are related to ferrite core and cold spot temperature.
고출력 LED를 구동하기 위한 정전류 부스트 컨버터 회로 설계
정영기(Young Gi Jeong),김남군(Nam Goon Kim),양종경(Jong Kyung Yang),박대희(Dae Hee Park) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
최근 에너지 절약에 대한 관심이 고조되면서 기존 광원보다 효율이 좋은 광원개발이 계속되고 있으며 그 대표적인 것이 고효율 및 고출력(high-power) LED이다. 고출력 LED의 개발로 인해 일부에서는 일반 조명용으로 사용하려는 연구가 진행 중 이다. LED를 조명용으로 사용하기 위해서는 구동회로, 광학설계, 방열설계 등을 포함한 조명시스템의 구성이 필요하다. 이 중 구동회로는 사용용도와 LED 구동특성 등에 따라 구동회로를 구성하여야 하며 이러한 구동회로 기술에는 벅, 부스트, 벅-부스트 컨버터 방식이 있다. 본 논문에서는 정전류 구동회로를 사용함에 있어 부스트 방식을 사용한 컨버터를 통해 7EA의 LED를 안정적으로 구동하고자 설계하였다. 이때 구동전류는 500 [㎃]로 설정하였으며 이에 따라 입력전압에 대한 전기적 특성을 측정한 결과 7 [V]이상일 때부터 전류특성이 안정화 되는 특성을 확인할 수 있었다.
세라믹 메탈할라이드 램프의 전자식 안정기에 따른 전기적 및 광학적 특성에 관한 연구
장혁진(Hyeok-jin Jang),김남군(Nam-Goon Kim),이주호(Lee Joo Ho),양종경(Jong-Kyung Yang),박대희(Park Dae Hee) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
In recent. ceramic metal halide lamps that use the ceramic in arc tube material have the advantage of high rendering index, high efficacy, long life. According to increase applications, the research continue to improve various factor that is arc tube material, optimization of gas and metal halide. In oder to improve system characteristics of CMH Lamp with ceramic arc tube, when operating CMH lamp with magnetic and electronics ballast, we compared with electrical, optical characteristics in this paper.
음향 공명 현상을 고려한 세라믹 메탈핼라이드의 특성 분석과 PSpice 시뮬레이션을 통한 인버터 설계
장혁진(Hyeok-Jin Jang),김남군(Nam-Goon Kim),양종경(Jong-Kyung Yang),이종찬(Jong-Chan Lee),박대희(Dae-Hee Park) 대한전기학회 2009 전기학회논문지 Vol.58 No.10
This study purposes are improvement of system (lamp & ballast) efficacy with and optical characteristics through the developed ceramic arc tube. The designed electronic ballast is substituted for conventional magnetic ballast. These electric signal and optical, thermal characteristics through the improving efficacy of lighting system compared with conventional magnetic ballast. properties of lamp by driving method is researching in ballast. Particularly, electronic ballasts, which improved against weakness of Magnetic Ballast, are researching and applying to control of ceramic metal-halide lamp. but One major limitation is the acoustic resonance problem in CMH lamps at high-frequency operation. In order to avoid acoustic resonance, driving frequency decided 21[kHz]. Before discharge in this paper. The PSpice simulation result obtained sufficient voltage gain and the ignition voltage obtained over 3[kV] at 75[kHz]. After discharge, driving voltage obtained approximately 90[Vrms] at 21[kHz].