실물 실험을 통한 태양광 모듈의 표면온도와 태양광 발전량과의 관계에 대한 연구

조성우(Sung-Woo Cho) 한국지열·수열에너지학회 2018 한국지열에너지학회논문집 Vol.14 No.3

PV module power is calculated on PV module surface temperature adjustment by irradiation on the summer and autumn in NOCT(Nominal Operating Cell Temperature) conditions. The summer and autumn periods were selected because of large variation in outdoor air temperature and irradiation. This study was performed to understand relationship between PV module surface temperature and photovoltaic power using field measurement. As a results, it was determined that the amount of irradiation was proportional to the amount of photovoltaic power in the field measurement. However, it was also identified that the PV power generation decreased by increased PV module surface temperatures due to irradiation.

Power control strategies of a DC-coupled hybrid power system for a building microgrid

조재훈,홍원표 한국조명.전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.3

Abstract - In this paper, a DC-coupled photovoltaic (PV), fuel cell (FC) and ultracapacitor hybrid power system is studied for building microgrid. In this proposed system, the PV system provides electric energy to the electrolyzer to produce hydrogen for future use and transfer to the load side, if possible. Whenever the PV system cannot completely meet load demands, the FC system provides power to meet the remaining load. The main weak point of the FC system is slow dynamics, because the power slope is limited to prevent fuel starvation problems, improve performance and increase lifetime. A power management and control algorithm is proposed for the hybrid power system by taking into account the characteristics of each power source. The main works of this paper are hybridization of alternate energy sources with FC systems using long and short storage strategies to build an autonomous system with pragmatic design, and a dynamic model proposed for a PV/FC/UC bank hybrid power generation system. A simulation model for the hybrid power system has been developed using Matlab/Simulink, SimPowerSystems and Matlab/Stateflow. The system performance under the different scenarios has been verified by carrying out simulation studies using a practical load demand profile, hybrid power management and control, and real weather data.

A Novel Simple Method to Abstract the Entire Parameters of the Solar Cell

Park, Minwon,Yu, In-Keun The Korean Institute of Electrical Engineers 2004 KIEE International Transactions on Electrical Mach Vol.b4 No.2

PV power generation, which directly converts solar radiation into electricity, contains numerous significant advantages. It is inexhaustible and pollution-free, silent, contains no rotating parts, and has size-independent electricity conversion efficiency. The positive environmental effect of photovoltaics is that it replaces the more polluting methods of electricity generation or that it provides electricity where none was available before. This paper highlights a novel simple method to abstract the entire parameters of the solar cell. In development, design and operation of PV power generation systems, a technique for constructing V-I curves under different levels of solar irradiance and cell temperature conditions using basic characteristic values of the PV module is required. Everyone who has performed manual acquisition and analysis of solar cell I versus V data would agree that the job is tedious and time-consuming. A better alternative is to use an automated curve tracer to print out the I versus V curves and compute the four major parameters; $V_{oc}$, $I_{sc}$, FF, and . Generally, the V-I curve tracer indicates only the commonly used solar cell parameters. However, with the conventional V-I curve tracer it is almost impossible to abstract the more detailed parameters of the solar cell; A, $R_{s}$ and $R_{sh}$ , which satisfies the user, who aims at the analysis of the development of the PV power generation system, that being advanced simulation. In this paper, the proposed method provides us with satisfactory results to enable us to abstract the detailed parameters of the solar cell; A, $R_s$ and $R_{sh}$.>.

Study of Characteristics of Solar Cells through Thermal Shock and High-Temperature and High-Humidity Testing

전유재,신영의,김도석 한국정밀공학회 2014 International Journal of Precision Engineering and Vol.15 No.2

Currently, only certification tests for photovoltaic modules are being made, so the exact cause of efficiency reductions due to aging are not fully analyzed. Before making a photovoltaic module in this study, we manufactured 3 line ribbon tabbed solar cells. After thermal shock and high-temperature and high-humidity testing, the changes in each solar cell component were analyzed and the cause of output reduction was identified. For the thermal shock testing, 500 cycles were performed for 15 min at each temperature, totaling 30 min per cycle, including ramp time to low temperature (-40oC) and high temperature (85oC). For the high-temperature and high-humidity tests, electrical characteristics were examined by exposing the cells to a temperature of 85oC and relative humidity (RH) of 85% for 1000 h. After thermal shock and high-temperature and high-humidity testing, the relative efficiency reduction rates were 11.3% and 5.9%, respectively, and relative fill-factor-reduction rates were 6.0% and 0.7%, respectively. The causes of output power reduction were found to be grid finger disconnect due to damage of the internal cell and cell cracking after the thermal shock test. This meant that concentrated current was not collected and therefore lost. The light collection ability was also degraded by surface damage. Through this experiment, it was identified that the major cause of output power reduction after thermal shock and high-temperature and high-humidity testing was increased series resistance (RS) caused by external damage and not by deterioration of the cell itself.

건물일체형 투명 PV복층창의 설치조건에 따른 단위출력당 발전특성 분석연구

안영섭(An Young-Sub),송종화(Song Jong-Hwa),김석기(Kim Seok-Ge),이성진(Lee Sung-Jin),윤종호(Yoon Jong-Ho) 한국태양에너지학회 2008 한국태양에너지학회 학술대회논문집 Vol.- No.-

This study is on the analysis of power output of transparent thin-film PV windows which are integrated into the building envelope instead of traditional windows. 3 installation angles of vertical, horizontal and 30° inclination are investigated. To measure power output of PV windows, full scale mock-up house was designed and constructed. The power performance of PV window system was analyzed for horizontal angle, declination angle and vertical angle according to incline angle. Monitoring data are gathered from November 2006 to August 2007 and statistical analysis is performed to analysis a characteristics of power performance of transparent PV windows. Results show that annual power output of PV window with horizontal angle is 844.4㎾h/㎾p/year, declination angle l,060㎾h/㎾p/year and vertical angle 431.6 ㎾h/㎾p/year.

박막 투명 PV복층창의 경사각별 연간 발전량 실측연구

안영섭,윤종호,송종화,김석기,이성진 대한건축학회지회연합회 2007 대한건축학회지회연합회 학술발표대회논문집 Vol.2007 No.1

This study is on the analysis of annual total power output of transparent thin-film PV windows which are integrated into the building envelope instead of traditional windows. 3 installation angles of vertical, horizontal and 30° inclination are investigated. To measure a power out of PV windows, full scale mock-up house was designed and constructed. The power performance of PV window system was analyzed for horizontal angle, declination angle and vertical angle according to incline angle. Monitoring data are gathered from November 2006 to August 2007 and statistical analysis is performed to analysis a characteristics of power performance of transparent PV windows. Results show that annual power output of PV window with horizontal angle is 1,042kWh/kWp/year, declination angle 1347kWh/kWp/year and vertical angle 586 kWh/kWp/year.

A Multiagent-Based Hybrid Power Control and Management of Distributed Power Sources

윤기갑,홍원표,이기홍 한국조명.전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.8

In this paper, a multi-agent control system for DC-coupled photovoltaic (PV), fuel cell (FC), ultracapacitor(UC) and battery hybrid power system is studied for commercial buildings & apartment buildings microgrid. In this proposed system, the PV system provides electric energy to the electrolyzer to produce hydrogen for future use and transfer to the load side, if possible. Whenever the PV system cannot completely meet load demands, the FC system provides power to meet the remaining load. A multi-agent system based-power management and control algorithm is proposed for the hybrid power system by taking into account the characteristics of each power source. The main works of this paper are hybridization of alternate energy sources with FC systems using long and short storage strategies to build the multi-agent control system with pragmatic design, and a dynamic model proposed for a PV/FC/UC/battery bank hybrid power generation system. A dynamic simulation model for the hybrid power system has been developed using Matlab/Simulink, SimPowerSystems and Stateflow. Simulation results are also presented to demonstrate the effectiveness of the proposed multi-agent control and management system for building microgrid.

태양광열 패널의 성능 예측을 위한 실험 연구

박태국(Tae-Kook Park),김대환(Dae-Hwan Kim),김재형(Jae-Hyoung Kim),이근휘(Keun-Hui Lee),장무성(Mu-Seong Chang),이기천(Ki-Chun Lee),최영도(Young-Do Choi) 한국신재생에너지학회 2019 신재생에너지 Vol.15 No.2

The use of new and renewable energy has increased in several fields. The use of solar energy has taken up a large portion of new and renewable energy. The method to collect solar energy is to produce electricity and obtain heat energy. A photovoltaic cell converts solar light directly to electricity by a photoelectric conversion element. In heat collection, the technology stores solar heat in a fluid using a thermal collector. A PV/T panel is a combination of a photovoltaic panel and a thermal collector, which can produce electricity and heat energy simultaneously. This study examined the electricity and heat energy output of a PV/T panel. Test equipment was developed to measure the performance of a PV/T panel. The results were analyzed by statistical analysis and a regression equation was derived. The heat energy output and electricity can be predicted through the regression equation of the PV/T panel test results. The performance of a PV/T panel predicted by the derived model formula fitted similarly the actual experimental results. The initial framework was constructed and reported at the 2017 conference of the KSME.

Power control strategies of a DC-coupled hybrid power system for a building microgrid

Cho, Jea-Hoon,Hong, Won-Pyo The Korean Institute of IIIuminating and Electrica 2011 조명·전기설비학회논문지 Vol.25 No.3

In this paper, a DC-coupled photovoltaic (PV), fuel cell (FC) and ultracapacitor hybrid power system is studied for building microgrid. In this proposed system, the PV system provides electric energy to the electrolyzer to produce hydrogen for future use and transfer to the load side, if possible. Whenever the PV system cannot completely meet load demands, the FC system provides power to meet the remaining load. The main weak point of the FC system is slow dynamics, because the power slope is limited to prevent fuel starvation problems, improve performance and increase lifetime. A power management and control algorithm is proposed for the hybrid power system by taking into account the characteristics of each power source. The main works of this paper are hybridization of alternate energy sources with FC systems using long and short storage strategies to build an autonomous system with pragmatic design, and a dynamic model proposed for a PV/FC/UC bank hybrid power generation system. A simulation model for the hybrid power system has been developed using Matlab/Simulink, SimPowerSystems and Matlab/Stateflow. The system performance under the different scenarios has been verified by carrying out simulation studies using a practical load demand profile, hybrid power management and control, and real weather data.

Power control strategies of a DC-coupled hybrid power system for a building microgrid

Jea-Hoon Cho,Won-Pyo Hong 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.3

In this paper, a DC-coupled photovoltaic (PV), fuel cell (FC) and ultracapacitor hybrid power system is studied for building microgrid. In this proposed system, the PV system provides electric energy to the electrolyzer to produce hydrogen for future use and transfer to the load side, if possible. Whenever the PV system cannot completely meet load demands, the FC system provides power to meet the remaining load. The main weak point of the FC system is slow dynamics, because the power slope is limited to prevent fuel starvation problems, improve performance and increase lifetime. A power management and control algorithm is proposed for the hybrid power system by taking into account the characteristics of each power source. The main works of this paper are hybridization of alternate energy sources with FC systems using long and short storage strategies to build an autonomous system with pragmatic design, and a dynamic model proposed for a PV/FC/UC bank hybrid power generation system. A simulation model for the hybrid power system has been developed using Matlab/Simulink, SimPowerSystems and Matlab/Stateflow. The system performance under the different scenarios has been verified by carrying out simulation studies using a practical load demand profile, hybrid power management and control, and real weather data.