• 제목/요약/키워드: Photovoltaic Field

검색결과 230건 처리시간 0.038초

경량 태양광발전 블라인드 개발 및 제어조건에 따른 음영분석 (Developing the Light-weight PV Blind System and the Shading Analysis by the Control Conditions)

  • 정유근
    • KIEAE Journal
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    • 제15권1호
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    • pp.83-88
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    • 2015
  • This study aims to develope the light-weight PV blinds with windows and to investigate the shading analysis by the control conditions. For the study, the polycarbonate characteristics and coating methods are analyzed and the PV blind design for a small office is suggested. Also, the mock-up model of a suggesting system was made. The field tests were controled based on a solar altitude under clear sky conditions. As results, it is necessary to use a polycarbonate instead of a tempered glass for a light-weight PV. The shading effects of blind systems are high in slat angle $30^{\circ}$ and low in $0^{\circ}$. Also, the shading ratio is more affected by solar latitude than solar altitude. The shading change rate is relevantly constant on the solar altitude.

PV시스템 최적화를 위한 손실요인 분석 (The Loss Factor Analysis for PV System Optimization)

  • 정영석;유병규;유권종;최주엽;소정훈
    • 전력전자학회논문지
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    • 제11권1호
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    • pp.22-28
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    • 2006
  • PV(Photovoltaic) 시스템의 국내 이용보급이 확대되면서 PV시스템의 최적화 및 운전시에 발생되는 문제점에 대한 대책기술에 대한 실용화기술 확립의 중요성이 대두되고 있다. 본 논문에서는 PV시스템의 최적화를 통한 성능개선을 위해서 실측결과를 토대로 종합적인 성능특성을 분석 평가하여 PV시스템의 손실요인을 비교 분석하였다. 그리고 시뮬레이션과 실측결과를 비교하여 PV시스템의 주요 손실요인을 분석함으로서 성능저하 및 문제점에 대해서도 검토하였다.

태양광발전 에너지 시스템의 표준 및 인증제도 (Standards and Certification Scheme of Solar Photovoltaic Energy Systems)

  • 신성호
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2005년도 춘계학술대회
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    • pp.142-146
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    • 2005
  • Standards are increasing of importance for photovoltaics. The rapid growth of production is one reason for this but standards are equally important in ensuring the quality and reliability of installed PV systems. which have a propound impact on acceptance of the technology in the expanding marketplace. Korea government (Korean Agency for Technology and Standards. KATS)make and implement a five year plans for promotion of international standardization of this field from 2004. Through these works and harmonization of PV Korea standards with international standards(international electrotechnical commission. IEC). KATS leads the technology innovations and eventually increases the international Competitiveness. Strategic collaboration with other countries is also strengthened through Korea's participation in IECEE(IEC system for conformity and certification of electrical equipment) on standards and conformity assessment. One of the major goals of the Plan is to facilitate trade between Korea and its trading partners by emphasizing harmonization of its national conformity assessment system with international norms

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독립형 태양광 발전시스템의 MPPT 제어기법 비교 (MPPT Control Method comparison of the Stand-alone PV system)

  • 이용식;김남인;정성원;김재현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.1386-1387
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    • 2011
  • Maximum power point tracking(MPPT) techniques are used in photovoltaic systems to maximize the PV array output power by tracking continuously the maximum power point which depends on panels temperature and on irradiance conditions. In this paper, the controller of the stand-alone PV system applicable to various fields are designed. The improved P&O MPPT and traditional P&O MPPT method was applied. This improved algorithm consists of a constant perturbation with an step control which will make easier the controller PV power data acquisition process. This strategy of control has, in first time, been validated by PSIM simulations. After, been field test. The experimental results show that the improved P&O method increased the PV output power compare to traditional P&O method.

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RCGA에 기초한 태양전지 모델의 파라미터 추정 (RCGA-Based Parameter Estimation of Solar Cell Models)

  • 권봉재;신명호;손영득;진강규
    • Journal of Advanced Marine Engineering and Technology
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    • 제27권6호
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    • pp.696-703
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    • 2003
  • A photovoltaic power generation system is an infinite and clean energy system. Recently. because of the realization of high efficiency and low cost PV modules, the studies on the PV system have extensively increased. In this paper. we present an online scheme for parameter estimation of solar cell, based on the model adjustment technique and a real-coded genetic algorithm(RCGA). The ideal diode model and the diode model with series and shunt resistors are used to estimate their parameters, Simulation works using field data in the form of a V-I characteristic curve are carried out to demonstrate the effectiveness of the proposed method.

다공체 내 연소의 열광전 발전에의 적용과 단일, 다중채널 및 다공체 내 초과 엔탈피 연소의 상사성 (Application of Combustion in Porous Inert Medium to Thermophotovoltaic Generation of Electricity and Excess Enthalpy Combustion Similarity to both Single and Multi-channels)

  • 이대근
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 2012년도 제45회 KOSCO SYMPOSIUM 초록집
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    • pp.171-174
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    • 2012
  • Thermophotovoltaics is the direct energy conversion technology from thermal to electric (voltaic) energy via photon radiation, without any thermodynamic cycle. It is, in general, accomplished by immersing solid body in high temperature heat source (e.g. combustion field), in order to achieve high intensity irradiation, and by receiving the radiation thereof on photovoltaic cells. In this paper, advantages of combustion in porous inert medium in applying to the thermophotovoltaics are discussed in a view of its excess enthalpy features. In addition, the similarities of flame behaviors in porous inert medium to both in single and multi-channels are described.

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소규모 주택용 태양광 발전시스템의 운전 특성 (The operating characteristics of a small-scale residential PV power system)

  • 안교상;임희천;강병삼;황인호;김신섭
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2001년도 하계학술대회 논문집 B
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    • pp.1284-1286
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    • 2001
  • In this paper, the operating characteristics of a 3 kW class grid-interactive photovoltaic(PV) power system was analysed from January 1998 to December 2000. The construction of the PV system includes a DC/AC inverter for grid connection, PV module, and data Monitoring & Acquisition system. The major results of the field test of the 3 kW class grid-interactive PV system showed that the system utilization rate was 13.83% the conversion efficiency of the inverter was 88% at an over half load, and the PV system generated the electricity more then 300 kWh per month.

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Surface Passivation Schemes for High-Efficiency c-Si Solar Cells - A Review

  • Balaji, Nagarajan;Hussain, Shahzada Qamar;Park, Cheolmin;Raja, Jayapal;Yi, Junsin;Jeyakumar, R.
    • Transactions on Electrical and Electronic Materials
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    • 제16권5호
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    • pp.227-233
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    • 2015
  • To reduce the cost of solar electricity, the crystalline-silicon (c-Si) photovoltaic industry is moving toward the use of thinner wafers (100 μm to 200 μm) to achieve a high efficiency. In this field, it is imperative to achieve an effective passivation method to reduce the electronic losses at the c-Si interface. In this article, we review the most promising surface passivation schemes that are available for high-efficiency solar cells.

Plastic Electronics and Optoelectronics: Advances in Materials and Devices

  • Jenekhe Samson A.;Kulkarni Abhishek P.;Zhu Yan
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.9-10
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    • 2006
  • Recent work in our laboratory has focused on the molecular and supramolecular engineering of conjugated polymers and oligomers for device applications, including light emitting diodes for displays and lighting, photovoltaic cells, and thin film transistors. A central finding is that the supramolecular structure of conjugated polymers can have a dominant influence on their properties and the performance of devices. Some major results include: highly efficient RGB light-emitting diodes from polymers and oligomers; high mobility n-channel polymer field effect transistors; ambipolar thin film transistors from copolymer semiconductors; and self-assembly and ambipolar charge transport in polymer nanowires.

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태양광발전 어레이 표면의 냉각/세정에 대한 장기 실증 실험 (Long-term Experiments of the Cooling/Cleaning on the surface of the PV Power Array)

  • 한준선;김이현;지희관;유상필
    • 한국태양에너지학회:학술대회논문집
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    • 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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    • pp.248-254
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    • 2012
  • In the situation of expanding domestic solar power supply business long-term performance modeling of a proposed solar-cooling and cleaning system to increase electromotive force and light transmission is carried out to test the effectiveness of the system. To test the effectiveness of the system, the data which comparing the solar power planet installing the system to not installing at the same time is used. A difference between the utilization factor of each comparison group were recorded. Approximately from one year to two years Field Test was performed, Result of apply to cooling/cleaning technology, Each of plant by From least 7 percent up to 16 percent utilization factor increased, and the cooling / cleaning is output through improved as a result of the determined.

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