• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 B
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• pp.1199-1200
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• 2006

In this paper, I try to measure the electrical characteristics of PV cell for lanterns with solar simulator and simulated with PC1D software. I keep my eye on the characteristics variation of PV cell as a temperature change. Therefore, I try to increase a temperature of controlled block from $10^{\circ}C$ to $50^{\circ}C$ while measuring the PV cell. As a result, A variation caused by voltage have an effect on the efficacy of PV cell. Hence, it is an important variable when a designer plan to make a solar cell for lanterns.

• 한국태양에너지학회 논문집
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• 제29권4호
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• pp.1-6
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• 2009

This paper estimates numerically cells the electrical characteristics of the PV module with environmental changes such as shunt resistance, series resistance, temperature, irradiance. Series resistance $R_s$ including diode characteristic resistance $r_d$ is derived from the p-n junction diode model. I-V characteristics of this model with series resistance $R_s$ are simulated on Matlab. Finally, theoretical I-V characteristics are compared with those of solar simulator. Those results agreed well within the manufacturer's maximum error range 3%

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2011년도 추계학술발표대회 논문집
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• pp.143-148
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• 2011

This paper is about the study on MPPT algorithm of PV module where mismatched solar cells exist. PSIM simulation tool was used to verify new MPPT algorithm and PV module modeling was made. It was verified for the proposed algorithm to track the right MPP of PV boost converter under mismatched condition, which shows a shading effect in PV module. An experiment will be done soon using PV simulator for verification of the proposed algorithm.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제44회 동계 정기학술대회 초록집
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• pp.175-175
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• 2013

염료감응형 태양전지(Dye Sensitized Solar Cells; DSSC)에서 투명전극(Transparent Conducting Oxide; TCO)으로 사용되는 ITO, FTO의 경우 자원의 희소성과 고온에 취약하며 취성과 같은 단점 등이 있다. Graphene은 단원자층의 얇은 물질로써 우수한 전도도와 투과도, 고강도와 고탄성의 특성들을 가진다. 이러한 특성들을 가지는 Graphene을 기존의 투명전극을 대체하여 DSSC의 작업전극에 적용 하였다. 본 실험에서 사용된 그래핀 시트는 근적외선을 source로 하는 RTA (Rapid Thermal Annealing)장비에 탄화수소 기반의 gas를 주입하여 Ni위에 성장시켰으며, 습식방법인 용액Etching 방식을 사용하여 유리판 위에 전사시켰다. 전사된 Graphene 투명전극의 전기적 특성과 광학적 특성을 평가하기 위해 4 point probe, FT-IR, 마이크로 Raman분광법, 광학현미경 및 투과도를 측정하여 평가 하였다. 전사된 Graphene 투명전극을 염료감응형 태양전지 작업전극에 적용하여, DSSC소자를 제작하고, Solar Simulator로 광전변환효율 및 EIS(Electrochemical Impedance Spectroscopy)를 측정하여 기존의 FTO로 만든 DSSC와 비교하였다.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제53권4호
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• pp.187-191
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• 2004

In this work, we used the PCID simulator for simulation of solar cell and examined the effect of front-back surface recombination velocity, minority carrier diffusion length, junction depth and emitter sheet-resistance. As the effect of base thickness, the efficiency decreased by the increase in series resistance with the increase of the thickness and found decrease in efficiency by decrease of the current as the effect of the recombination. Also, as the effect of base resistivity, the efficiency increased somewhat with the decrease in resistivity, but when the resistivity exceeded certain value, the efficiency decreased as a increase in the recombination ratio. The optimum efficiency was obtained at the resistivity 0.5 $\Omega$-cm, and thickness $100\mu\textrm{m}$. We have successfully achieved 10.8% and 13.7% efficiency large area($103mm{\times}103mm$) mono-crystalline silicon solar cells without and with PECVD silicon nitride antireflection coating.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2006년도 춘계학술대회 논문집
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• pp.233-236
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• 2006

In this paper, I try to measure the electrical characteristics of PV cell for lanterns with solar simulator and simulated with PC1D software. 1 keep my eye on the characteristics variation of PV cell as a temperature change. Therefore, I try to increase a temperature of controlled block from $10^{\circ}C\;to\;50^{\circ}C$ while measuring the PV cell. As a result A variation caused by voltage have an effect on the efficacy of PV cell. Hence, it is an important variable when a designer plan to make a solar cell for lanterns.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 추계종합학술대회 B
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• pp.189-192
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• 2008

본 논문에서는 태양광 발전시스템의 인버터 개발에 필요한 태양광 시뮬레이터를 개발하고자 한다. 태양광 시뮬레이터를 one-diode 등가회로를 기반으로 기존의 제품을 수치적으로 모델링하고, P-V특성곡선을 이용하여 인버터가 MPPT를 수행 할 최대값 및 최소값을 찾아서 파라메터를 설계하였다. 그리고 설계된 파라메터를 PSIM으로 검증하였으며, Matlab을 이용하여 주파수 분석을 수행하였다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 추계학술대회
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• pp.216-221
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• 2003

A thermal vacuum chamber is mainly used to simulate thermal environments of a test satellite in satellite orbits in which daily temperature variations range from 80K to above 400K depending on solar radiation under the vacuum below $10^{-4}$ torr. The test facility is quite complex and consists of expensive parts. So any modification of control software is discouraged in fear of unexpected system failure. The purpose of this study is to develop a realtime dynamics model of the thermal vacuum chamber in view of controller design and simulate its electrical inputs and outputs for interface with a PLC (programmable logic controller). A PLC program that was used in the thermal vacuum chamber is applied to the realtime simulator. The realized simulator dynamics is found to be quite similar to that of the thermal vacuum chamber and serve to an appropriate plant to verify the control performance of a programmed PLC.

• 전력전자학회논문지
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• 제16권6호
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• pp.577-586
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• 2011

본 논문에서 DC 마이크로그리드의 동작분석을 위한 하드웨어 시뮬레이터의 개발에 관해 기술하고 있다. 이 하드웨어 시뮬레이터는 분산전원으로 풍력발전, 태양광 발전, 연료전지를, 그리고 에너지저장으로 슈퍼커패시터, 배터리를 포함하고 있다. 또한 전체시스템의 에너지관리와 상태모니터링을 수행하는 중앙제어기를 포함하고 있어 이더넷을 기반으로 한 통신을 통해 각 분산전원과 에너지저장에 탑재된 하위제어기와 연계되어있다. 개발한 하드웨어 시뮬레이터는 실제 상황을 고려한 DC 마이크로그리드의 성능분석에 활용될 것으로 기대된다.

• Safety and Health at Work
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• 제8권3호
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• pp.237-245
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• 2017

Background: Solar furnaces are used worldwide to conduct experiments to demonstrate the feasibility of solar-chemical processes with the aid of concentrated sunlight, or to qualify high temperature-resistant components. In recent years, high-flux solar simulators (HFSSs) based on short-arc xenon lamps are more frequently used. The emitted spectrum is very similar to natural sunlight but with dangerous portions of ultraviolet light as well. Due to special benefits of solar simulators the increase of construction activity for HFSS can be observed worldwide. Hence, it is quite important to protect employees against serious injuries caused by ultraviolet radiation (UVR) in a range of 100 nm to 400 nm. Methods: The UV measurements were made at the German Aerospace Center (DLR), Cologne and Paul-Scherrer-Institute (PSI), Switzerland, during normal operations of the HFSS, with a high-precision UV-A/B radiometer using different experiment setups at different power levels. Thus, the measurement results represent UV emissions which are typical when operating a HFSS. Therefore, the biological effects on people exposed to UVR was investigated systematically to identify the existing hazard potential. Results: It should be noted that the permissible workplace exposure limits for UV emissions significantly exceeded after a few seconds. One critical value was strongly exceeded by a factor of 770. Conclusion: The prevention of emissions must first and foremost be carried out by structural measures. Furthermore, unambiguous protocols have to be defined and compliance must be monitored. For short-term activities in the hazard area, measures for the protection of eyes and skin must be taken.