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자료유형
학술대회자료
저자정보
유광선 (한국과학기술원) 신구환 (한국과학기술원) 차원호 (한국과학기술원) 강성원 (비제이파워) 김용식 (비제이파워) 강기환 (한국에너지기술연구원)
저널정보
한국태양에너지학회 한국태양에너지학회 학술대회논문집 한국태양에너지학회 2010년도 추계학술발표대회 논문집
발행연도
2010.11
수록면
331 - 336 (6page)

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Photovoltaic power generation systems are attracting considerable attention as sources of electrical power that can replace or complement the current power generation systems that utilize fossil and nuclear fuels. So far, the costs for the solar PV systems are not competitive with other power generation systems. Since the cost of concentration optics bought in volume, are much lower than solar cells, there have been various efforts to lower the manufacturing cost using various concentrator optics. The artificial increase in the solar intensity incident on solar cells using lenses or mirrors can allow solar cells to generate equivalent power with a lower cost. There are two types of concentration optics for solar energy conversion. One is to use mirrors, and the other is to use Fresnel lenses. The gains that can be achieved with a Fresnel lens or a parabolic mirror are compared. The result showed the gains are comparable and the two configurations were developed competitively. In application areas of Fresnel lenses as solar concentrators, several variations of design were devised and tested. Some PV systems still use commercially available flat Fresnel lenses as concentrators. A convex linear Fresnel lens to improve the concentration ratio and the efficiency is devised and flat linear Fresnel lens in thermal energy collection is utilized. In this study, we designed and optimized flat Fresnel lens and the ‘light pipe’ to develop 500X concentrated solar PV system. In the process, we compare the transmission efficiencies of ‘groove in case’ and ‘grooves out case’. We performed rigorous ray tracing simulation of the flat Fresnel lenses. The computer aided simulation showed the ‘grooves in case’ has the better efficiency than that of ‘grooves out case’. InGaP/InGaAs/Ge triple junction solar cell is used to convert the photon energy to electrical power. As well as the optical performance of the concentration system, the field test results of the 500X concentrated PV system will be introduced.

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Abstract
1. 서론
2. 렌즈 설계
3. 렌즈 제작
4. 렌즈 성능 측정 실험 및 결과
5. 결론
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UCI(KEPA) : I410-ECN-0101-2012-563-003850970