루버일체식 양면형 태양광 모듈의 건축적 활용을 위한 연간 발전량 실험 분석

조경주,조동우 한국태양에너지학회 2022 한국태양에너지학회 논문집 Vol.42 No.1

Solar power systems are the most commonly used renewable energy systems for energy self-sufficiency in buildings. In particular, bifacial photovoltaic modules for solar power generation have been researched for their optimal application, as they can generate electricity from two sides using only a single frame. In addition, because the price of a bifacial photovoltaic module is approximately 20% higher than that of a single-sided module, installing bifacial photovoltaic modules in suitable locations on buildings can be economical. To date, most studies have primarily focused on how to increase the amount of power generation from rear cells by arranging materials with high reflectivity on the floors of buildings. In point of fact, when bifacial photovoltaic modules are arranged in an east-west orientation, the maximum amount of power can be obtained in the mornings and afternoons. However, when these modules are installed in buildings in this orientation, a shadow is produced on the building surface according to the trajectory of the sun. In addition, when photovoltaic modules are used in the building envelope, the amount of power generation is often reduced because of this shadow. Nevertheless, even when considering this reduction in power generation, if the total power generation is higher than when photovoltaic modules are installed only vertically, the self-sufficiency rates of buildings can be improved. In this study, the shadow of a bifacial photovoltaic module was simulated using vertical photovoltaic modules to consider the possibilities of architectural application of bifacial photovoltaic modules.

태양광-풍력 하이브리드 발전기에서 태양전지모듈과 풍력발전기 이격거리

우상우(Woo Sang-Woo),김홍우(Kim Hong-Woo),김성수(Kim Sung-Soo) 한국태양에너지학회 2009 한국태양에너지학회 논문집 Vol.29 No.4

This aim of the study is to demonstrate the effect of a photovoltaic module installed on a small wind-photovoltaic hybrid generation system. Computational fluid dynamics(CFD) is used to interpret the velocity field around the photovoltaic module and the blade areas of a wind turbine. According to the simulation results, it is obvious that x_velocity and y_velocity varies very significantly with time near the photovoltaic module. This would lead to an increase of periodic wind load caused by flow separation at the edge of the photovoltaic module. This study discusses the flow characteristics in term of velocity and frequency analysis. Moreover we suggest a distance between a photovoltaic module and a wind turbine to avoid partially the negative effect caused by the photovoltaic module.

태양광 발전시스템의 그림자 영향을 고려한 PV 모듈의 재구성

고재섭(Jae-Sub Ko),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.2

This paper proposes the reconfiguration of PV module considering shadow influence of photovoltaic system. The PV system is consisted series-parallel connection of PV module. The voltage and current between PV modules become unbalance when shadow occurs to PV module. If shadow occurs to the series connection PV module, the output current is limited to current of shaded PV module. Also if shadow occurs to the parallel connection PV module, the output voltage is limited to voltage of shaded PV module. These problems are caused power loss. Therefore, the PV module in this paper consist using the fixed module and variable module by shaded conditions. The reconfiguration of PV module can compensates the shadow influence by changing connection of a variable module when shadow is occurred to PV module. A validity of the reconfiguration of PV module proposed in this paper proves through comparing with performance of conventional PV module.

회전 반사판을 이용한 태양광발전장치의 발전량 향상

홍경진,Hong, Kyungjin 한국인터넷방송통신학회 2020 한국인터넷방송통신학회 논문지 Vol.20 No.5

기존의 태양광발전장치 중에서 반사판을 갖춘 장치는 태양에너지(일사량)를 태양광 모듈 표면에 집중적으로 입사되는 방식이지만 태양광 모듈을 통해 다시 반사되어 손실되는 태양에너지(일사량)는 고려되지 않는 구조로 되어있다. 또한, 태양광 모듈 주위에 반사판을 설치하여 발전량을 높이는 방안이 제시되고 있지만, 이는 다른 태양광 모듈의 음영에 따른 발전 저하에 영향을 주고 있다. 따라서 이러한 문제점을 개선하고자 본 논문에서는 1) 음영에 따른 태양광 모듈의 발전에 영향을 주지 않으면서 2) 태양광 모듈에서 반사되어 손실되는 태양에너지(일사량)를 회전하는 반사판을 이용하여 태양광 모듈에 다시 입사되는 방법을 연구 및 제안한다. 따라서 손실된 태양에너지(일사량)의 무수한 반사 각도에 따른 태양에너지를 재활용할 수 있는 방법을 통해 태양에너지(일사량)에 대한 손실을 최소화, 동일 일사량에 대한 발전량을 최대화하므로 태양광발전장치의 발전량을 증가시킬 수 있다. In the existing photovoltaic generation system, the system equipped with the reflecting plate is a method in which solar energy (insolation) is concentrated on the surface of the photovoltaic module. However, the solar energy (insolation) lost by being reflected back through the solar module is not considered. Although a method of increasing the amount of power generated by installing a reflector around the solar modules has been proposed, this affects the power generation degradation caused by the shading of other solar modules. Therefore, in order to improve this problem, in this paper, 1) without affecting the development of photovoltaic module according to the shade, 2) photovoltaic module using a reflector rotating the solar energy (insolation) lost by the solar module Study and suggest how to join again. Therefore, the loss of solar energy (insolation) can be minimized through the method of recycling the solar energy according to the countless reflection angle of the lost solar energy (insolation). As a result, it is possible to increase the amount of power generation of the photovoltaic generation system by maximizing the amount of power generation for the same solar radiation.

결정질 실리콘 및 CuIn_xGa_(1-x)Se₂ 모듈의 부분음영에 따른 태양전지 특성 변화 및 바이패스 다이오드의 작동 메커니즘 분석

이지은,배수현,오원욱,강윤묵,김동환,이해석,Lee, Ji Eun,Bae, Soohyun,Oh, Wonwook,Kang, Yoonmook,Kim, Donghwan,Lee, Hae-Seok 한국재료학회 2015 한국재료학회지 Vol.25 No.4

This paper presents the impact of partial shading on $CuIn_xGa_{(1-x)}Se_2(CIGS)$ photovoltaic(PV) modules with bypass diodes. When the CIGS PV modules were partially shaded, the modules were under conditions of partial reverse bias. We investigated the characterization of the bypass diode and solar cell properties of the CIGS PV modules when these was partially shaded, comparing the results with those for a crystalline silicon module. In crystalline silicon modules, the bypass diode was operated at a partial shade modules of 1.67 % shading. This protected the crystalline silicon module from hot spot damage. In CIGS thin film modules, on the other hand, the bypass diode was not operated before 20 % shading. This caused damage because of hotspots, which occurred as wormlike defects in the CIGS thin film module. Moreover, the bypass diode adapted to the CIGS thin film module was operated fully at 60% shading, while the CIGS thin film module was not operated under these conditions. It is known that the bypass diode adapted to the CIGS thin film module operated more slowly than that of the crystalline silicon module; this bypass diode also failed to protect the module from damage. This was because of the reverse saturation current of the CIGS thin film, $1.99{\times}10^{-5}A/cm^2$, which was higher than that of crystalline silicon, $8.11{\times}10^{-7}A/cm^2$.

발전차액제도가 고려된 태양광 폐모듈 발생량 예측

박종성(Jongsung Park),임철현(Cheolhyun Lim),김우람(Wooram Kim),박병욱(Byungwook Park),이진석(Jin-seok Lee),이석호(Sukho Lee) 한국태양광발전학회 2020 Current Photovoltaic Research Vol.8 No.1

In this study, we predict the generation of end-of-life photovoltaic modules when Feed in Tariff applied, in Republic of Korea. Based on the installation of photovoltaic modules, we prepared three different senarios in order to estimate the generation of end-of-life photovoltaic modules. The senarios are i) early worn-out, ii) mid worn-out and iii) late-worn out senario. We selected the mid worn-out senario to estimated the amount of end-of-life photovoltaic modules in this study. Establishment of the end-of-life module generation scenario predicted generation of end-of-life photovoltaic module, and forecasted generation amount of end-of-life module to which Feed in Tariff was applied in consideration of installed photovoltaic modules installed by Feed in Tariff support. The generation of Feed in Tariff-applied end-of-life modules increased from 2021 to 2025 compared to without Feed in Tariff, and since then, the Feed in Tariff-applied end-of-life modules were generated as waste modules during the relevant period (2021 ~ 2025).

홀로그램 필름을 적용한 집광형 모듈 개발

김세호(Kim Se-Ho),이천호(Lee Chun-Ho),류세환(Ryu Se-Hwan) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.4

This paper describes the application of holographic film for concentrator photovoltaic module. Holographic film is able to concentrate visible light and redirect this concentrated light to the solar cells in order to increase the efficiency of solar cells. Therefore, we have applied the Holographic film to photovoltaic module for reducing the numbers and improving the efficiency of solar cell. Also, The holographic film module sample has been designed and this designed holographic module was tested in the field. In this paper, we will present the characteristics of holographic film and discuss the application of concetrator module for silicon photovoltaic module.

전면 액체식 흡열판을 적용한 PVT 모듈의 실험성능

천진아(Chun Jin-Aha),김진희(Kim Jin-Hee),김준태(Kim Jun-Tae),조인수(Cho In-Soo),남승백(Nam Seung-Baeg) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.4

The heat from PV modules should be removed for better electrical performance, and can be converted into useful thermal energy. A photovoltaic-thermal(PVT) module is a combination of PV module with a solar thermal collector which forms one device that converts solar radiation into electricity and heat simultaneously. In general, there are two different types of PVT module: glazed PVT module and unglazed PVT module. On the other hand, two types of the PVT module can be distinguished according to absorber on PV module rear side: the sheet-and-tube absorber PVT module and the fully wetted absorber PVT module. In this paper, the experimental performance of water type unglazed PVT with fully wetted absorber was analyzed. The electrical and thermal performance of the unglazed PVT were measured in outdoor conditions, and the results were analyzed. The experimental results showed that the thermal efficiency of the PVT module was 42% average, and its electrical efficiencies were 15.2% and 14.2% average, respectively, for the mean fluid temperature of 10-20℃ and 21-30℃. Thermal efficiency depends on solar radiation, mean fluid temperature and ambient temperature. The PVT module temperature is related to the cooling effect of the PV module by the fluid of the absorber. The results proved that the electrical efficiency was higher when the mean fluid temperature was lower.

부착형 태양광열 모듈의 상용화를 위한 최신기술 및 시장 동향 분석

배상무,남유진,채호병,오진환,조정흠,류남진,정상헌 한국 지열 · 수열에너지학회 2023 한국지열에너지학회논문집 Vol.19 No.1

In order to overcome the limitations of the individual renewable energy technologies such as photovoltaic (PV) and solar-thermal and effectively realize zero energy buildings, the photovoltaic-thermal (PVT) technology is being proposed. The current PVT module was simply combined with a PV panel and a solar-thermal collector. Therefore, it was difficult to commercialize because the PVT module is heavy and has no significant advantages compared to applying the individual technology. In this study, an attached PVT module is proposed for the commercialization and securing competitiveness in the renewable energy market. The attached PVT module enables on-site work with a simplified manufacturing process and can significantly reduce the supply price of the product. Moreover, it can be easily applied on already installed the PV panels. This study aims to commercialize the attached PVT module, the basic data was established as follows: (1) latest technology related to PVT module, (2) Global trends of the PVT module market. The possibility of commercialization of the attached PVT module was reviewed based on the results of the latest technology and market trends analysis. The supply price of the attached PVT module is lower than the existing products and it is considered that there is a high possibility of commercialization and introduction market with the advantage such as utilizing the existing PV industry and market. Moreover, the attached PVT module can be produced simultaneously the thermal and electrical energy, and it can be presented as an innovative alternative that can respond to the energy demand for residential sector

태양광 발전 에너지 분야 교육 내용에 대한 관련 전문교과 교사의 교육요구도 분석; 태양전지 모듈 제조를 중심으로

이찬주,이병욱 한국기술교육학회 2012 한국기술교육학회지 Vol.12 No.3

This study aims to analyze the educational needs about educational contents for vocational teachers in the department related to manufacturing of PV module. For this purpose, this study analyzes the importance levels and their ability levels for educational contents of 8 educational domains about manufacturing of PV module recognized as vocational teachers. And in this study, based on the results, the educational needs are analyzed and the results are as follow:The subjects for this research were 64 vocational teachers in the department related to manufacturing of PV module, and the answered questionaries were 52 and among them. 47 questionaries were used for analysis. The results of analysis are as follows:First, in general, vocational teachers recognized that educational contents about manufacturing of PV module are important. The importance of each educational content were different in academic abilities, teaching experiences, working experiences, class experiences, and training experiences in this field. Second, vocational teachers recognized that they didn't have sufficient ability level for educational contents for manufacturing of PV module. Their ability level for each educational contents were different in their genders, teaching experiences, working experiences, class experiences, and training experiences in this field. Third, the educational needs of teachers about educational contents for manufacturing of PV module are 3.62 and they recognized that they have low ability level, to compared with its importance. In particular, in items of educational contents, kinds and components of PV module, thin film analysis and thin film typed solar cell's educational needs were high. 이 연구의 목적은 태양광 발전 에너지 분야의 태양전지 모듈 제조 관련 학과 전문교과 교사를 대상으로 해당 분야 교육 내용에 대한 교육요구도를 분석하는 것이다. 이를 위해서 태양전지 모듈 제조에 대한 8개의 교육 내용에 대해서 전문교과 교사들이 인식하는 중요도와 자신의 능력 수준에 대해서 조사하였으며, 그 결과를 토대로 교육요구도를 분석하였다. 조사 대상은 전국의 특성화고 및 마이스터고 관련학과의 전문교과 교사 64명이고, 이들에게 모두 설문지를 배부하였으며 회수한 설문지는 52부이며, 이중에서 47부가 분석에 활용되었다. 분석된 연구 결과는 다음과 같다. 첫째, 전문교과 교사는 태양광 모듈 제조의 교육 내용에 대해서 전반적으로 중요하다고 인식하고 있었다. 교육 내용별 중요도는 학력, 교직 경력, 관련 분야 학과 근무 경력, 관련 분야 수업 경험, 관련 분야 연수 경험에 따라 차이가 있었다. 둘째, 전문교과 교사는 태양광 모듈 제조의 교육 내용에 대한 자신의 능력 수준은 다소 부족하다고 인식하고 있었다. 교육 내용별 능력 수준은 성별, 교직 경력, 관련 분야 학과 근무 경력, 관련 분야 수업 경험, 관련 분야 연수 경험에 따라 차이가 있었다. 셋째, 태양광 모듈 제조의 교육 내용에 대한 전문교과 교사의 교육요구도는 3.62이고, 자신의 능력 수준은 중요도에 비해서 낮게 인식하는 것으로 나타났다. 특히, 교육 내용의 항목 중에서 태양전지 모듈의 종류 및 구성 요소, 박막분석, 박막형 태양전지 등의 교육요구도가 높은 것으로 나타났다.