• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 하계종합학술대회 논문집(5)
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• pp.99-102
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• 2001

In this paper, the electronic ballast was developed to control 250W metal halide lamp. To avoid acoustic resonance phenomenon, we calculated the acoustic resonance band and determined the driving frequence to from 70kHz to 100kHz. Due to the switching loss of MOSFET, many problems are caused in the inverter circuit during lighting the lamp, so we have reduced the loss by connecting the capacitor to reduce inrush current In this paper, main research area is to find the methods to operate the Iamp on regulated constant output. After detecting the current I and voltage V of the lamp, we changed the driving frequency by changing the DC voltage level.

• Journal of Advanced Marine Engineering and Technology
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• 제34권4호
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• pp.515-521
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• 2010

본 논문에서는 에너지 절감형 발광다이오드 집어등의 개발과 적용에 대하여 기술하였다. 오징어, 다랑어, 고등어, 정어리 그리고 갈치와 같은 대부분의 생선은 주광성이며, 집어등은 이러한 어류들의 광반응 특성을 이용하여 어업 효율을 증대시킨다. 현재는 집어등으로 소비전력이 1.5 kW이고 인체에 유해한 자외선을 방출하는 메탈 할라이드 램프(MHL)가 대부분 사용되고 있다. LED 집어등의 개발을 위해, 광 파장에 따른 해수투과와 오징어의 광반응 특성을 연구하였다. 실험에서는 상기 두 가지 특성이 모두 470 nm 전후의 청색에서 나타났다. 결과에 근거하여, 1.5 kW MHL의 약 1/9의 소비전력인 160 W급 청색 LED 집어등을 제작하였다. 에너지 절감효과로 LED 집어등은 1.5 kW 80개의 MHL을 설치한 22톤 어선의 경우, 시간당 128 kWh의 전력소모를 줄일 수 있으며, 이는 이산화탄소 86 kg에 해당한다. 시제작 LED 집어등은 2척의 어선에서 실증 조업 중에 있다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2010년도 하계학술대회 논문집
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• pp.81-82
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• 2010

This paper suggests a high frequency operated electronic ballast. Operation frequency is sufficiently high above 250kHz for avoiding the acoustic resonance in metal halide lamp. The inverter composition and operation principle of ballast are described and verified by experiments.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2004년도 학술대회 논문집
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• pp.385-390
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• 2004

In this paper, electronics ballast using double resonant inverter for 250[W] MHD lamp is designed and implemented. Electronics ballast reduce a turn -on/offf loss by using ZVS(Zero Voltage Switching) technic in the double resonant inverter, and when circuit have a analysis, the characteristic evaluations is described generally by using the normalized parameters used numerical analysis. We conform a rightfulness of theoretical analysis by comparing theoretical waveforms and Pspice waveforms and experimental waveforms, double resonant inverter for 250[W] MHD lamp is operated safely.

• 조명전기설비학회논문지
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• 제29권3호
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• pp.30-38
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• 2015

As products using LEDs are developed actively, also there has been large request for LED products that can replace traditional lamps like fluorescent lamps and metal halide lamps. But so far there is no proper standard that manufacturer can use and test it. As a result manufacturer can't develop retrofit LED lamps and sell it even they have technology. In this study, by analyzing control gear for fluorescent lamp that is currently used in market which is magnetic or electronic ballast, I'd like to develop proper test method by investigating compatibility between all-type control gear and LED retrofit products.

• 조명전기설비학회논문지
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• 제29권10호
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• pp.1-6
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• 2015

As lamps using LEDs are developed actively, also there have been large request for LED lamps that can replace traditional lamps like fluorescent lamps and metal halide lamps. But so far there are no proper standards that manufacturer can use and test their lamps. As a result of this, manufacturers are not only unable to develop LED lamps but also sell it even though they have technology. In this study, It is proposed that proper test method by investigating compatibility between all-type control gear and LED lamps by analyzing control gear for fluorescent lamp such as magnetic or electronic ballast that is currently used in the market.

• 조명전기설비학회논문지
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• 제19권5호
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• pp.9-16
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• 2005

본 연구는 건축조명환경의 광학적 특성에 따라 변화하는 인간의 감성반응을 측정$\cdot$평가하여 조명광원에 대한 감성 데이터 확보에 목적이 있으며, 실제 건축공간에서 활용되는 조명광원을 광학적 특성에 따라 선정한 다음, 조명광원별 감성반응을 측정하여 분석하였다. 연구의 결과를 요약하면, 1) 시기능의 명시성에 있어서 주광색 형광램프가 가장 작업수행도가 높은 것으로 나타났다. 2) 시기능의 피로$\cdot$스트레스에 있어서는, 메탈할라이드 램프와 수은 램프가 부정적인 영향을 주고 있는 것으로 나타났다. 3) 빛의 쾌적성 항목 중 $\ulcorner$밝기가 적당한$\lrcorner$, $\ulcorner$햇빛색에 가까워 보이는$\lrcorner$ 어휘에서는 색온도가 높은 주광색 형광램프가 높은 평가를 받고 있는 것으로 나타났으며, $\ulcorner$눈부심이 있는$\lrcorner$ 어휘에서는 메탈할라이드 램프와 수은 램프가 낮은 평가를 받았다. 4)요인분석 실시 결과, $\ulcorner$촬동성$\lrcorner$, $\ulcorner$역량성$\lrcorner$, $\ulcorner$평가성$\lrcorner$의 3개의 평가축이 추출되었으며, 실내조명공간의 분위기 평가에 있어서 $\ulcorner$활동성$\lrcorner$이 미치는 영향력이 가장 큰 것으로 나타났다. 5) 각 조명광원별 분위기 평가에 미치는 영향에 대해서, $\ulcorner$활동성$\lrcorner$축은 메탈할라이드 램프와 주광색 형광램프, $\ulcorner$역량성$\lrcorner$축은 백열램프류, $\ulcorner$평가성$\lrcorner$축은 주로 색온도가 낮은 형광램프에 의한 영향을 많이 받는 것으로 나타났다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 F
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• pp.2562-2564
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• 1999

We have development the electronic ballast for metal halide discharge (MHD) lamp. The ballast consists of the boost pre-converter for power factor correction (PFC), a flyback a converter, half-bridge inverter and ignitor. To reject acoustic resonance phenomena, we have designed electronic ballast driving with the low frequency square wave. As results of this study, the ballast had not flicker phenomena and promoted corrected the factor (PF) highly

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2009년도 춘계학술대회 논문집
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• pp.39-42
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• 2009

본 논문에서는 콤팩트 세라믹 메탈핼라이드 램프용 가로등 기구의 반사판에 대해 2차원 설계법을 기반으로 한 3차원 설계로 150W single-ended type 콤팩트 세라믹 메탈핼라이드 램프 전용의 가로등용 반사판을 설계하였다.

• 수산해양기술연구
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• 제51권2호
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• pp.163-170
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• 2015

Recently LED fish-attracting lamps have been more widely used in fisheries as low-cost and high-efficiency fishing gear, and development of long-life high-efficiency lamps is required through the design of LED packages to optimize heat resistance. This study developed an improved LED fish-attracting lamp with excellent heat performance, which was verified using a numerical model. Heat-resistance design factors such as the heat-radiation fin shape, PCB type, and LED chip count were investigated and optimized. Comparison with a commercial 180-W LED fishing lamp showed that the increase in initial temperature was 40% higher than that of the surrounding LED chip because of design errors in contact thermal resistance. The 250-W LED lamp developed in this study has a characteristic with thermal rising in linearly stable according to the heat source. In addition, luminance efficiency was improved by 20-65% by using flow-visualization simulation. A decrease of 45% in total power consumption with a fuel-cost reduction of over 55% can be expected when using these optimized heat release design factors.