• Title/Summary/Keyword: Integrated Solar Cell

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The Notch Filter Design for Mitigation Current Ripple of Fuel cell-PCS (연료전지용 PCS의 출력 전류 리플 개선을 위한 노치 필터 설계)

  • Kim, Seung-Min;Park, Bong-Hee;Choi, Ju-Yeop;Choy, Ick;Lee, Sang-Chul;Lee, Dong-Ha
    • Journal of the Korean Solar Energy Society
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    • v.32 no.6
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    • pp.106-112
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    • 2012
  • As a fuel cell converts the chemical energy of the fuel cell into electrical energy by electrochemical reaction, the fuel cell system is uniquely integrated technique including fuel processor, fuel cell stack, power conditioning system. The residential fuel cell-PCS(Power Conditioning System) needs to convert efficiently the DC current produced by the fuel cell into AC current using single-phase DC-AC inverter. A single-phase DC-AC inverter has naturally low frequency ripple which is twice frequency of the output current. This low frequency(120Hz) ripple reduces the efficiency of the fuel cell. This paper presents notch filter with IP voltage controller to reject specific 120Hz current ripple in single-phase inverter. The notch filter is designed that suppress just only specific frequency component and no phase delay. Finally, the proposed notch filter design method has been verified with computer simulation and experimentation.

A Study on the Application Trends of Next-Generation Solar Cells and the Future Prospects of Smart Textile Hybrid Energy Harvesting Devices : Focusing on Convergence with Industrial Materials (차세대 태양전지의 활용 동향 및 스마트 텍스타일 하이브리드 에너지 하베스팅 소자의 미래전망에 관한 연구 : 산업 소재와의 융합 중심)

  • Park, Boong-Ik
    • Journal of Convergence for Information Technology
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    • v.11 no.11
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    • pp.151-158
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    • 2021
  • In this paper, we analyzed the latest research trends, challenges, and potential applications of next-generation solar cell materials in various industrial fields. In addition, future prospects and possibilities of Smart Textile Hybrid Energy Harvesting Devices that will supply electricity by combining with wearable IoT devices are presented. The hybrid textile energy harvesting device fused next-generation solar cells with tribo-piezoelectric devices will develop into new 'Convergence Integrated Smart Wear' by combining the material itself with wearable IoT devices in the era of the 4th industrial revolution. The next-generation nanotechnology and devices proposed in this paper will be applied to the field of smart textile with an energy harvesting function. And we hope it will be a paradigm shift that evolves into creative products which provide AI services such as medical & healthcare by convergence with the future smart wear industry.

A Novel MPPT Control of PV MIC System Considering the Shaded Effect (그림자 영향을 고려한 PV MIC 시스템의 새로운 MPPT 제어)

  • Choi, Jung-Sik;Chung, Dong-Hwa
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.26 no.5
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    • pp.21-33
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    • 2012
  • This paper presents the new maximum power point tracking(MPPT) control of the photovoltaic(PV) module integrated converter(MIC) system considering the shadow influence. The output characteristics of the solar cell is a nonlinear and affected by a temperature, the solar radiation and influence of a shadow. Particularly, MIC system is very sensitive to the shadow influence because the capacity is very small. In order to increase an output and efficiency of the solar power generation, the maximum power point(MPP) obeying control are necessary. Conventional perturbation and observation(PO) and Incremental conductance(IC) are the method finding MPP by the continued self-excitation vibration. The MPPT control is unable to be performed by rapid output change affected by the shadow. To solve this problem, the new control algorithm of the multi-level in which the step value changes by output change is presented. In case there are the solar radiation, a temperature and shadow influence, the presented algorithm treats and compares the conventional control algorithm and output error. In addition, the validity of the algorithm is proved. through the output error response characteristics.

The Influence of Process Variables on the Thin Film Growth of Metal-Halide Perovskites by the Solution Shear Coating (전단코팅 공정으로 제조하는 금속-할라이드계 페로브스카이트의 박막성장에 미치는 공정변수의 영향 고찰)

  • Choe, Jihye;Song, Jiho;Jeong, Jiyoung;Chung, Choong-Heui;Kim, Jaekyun;Hong, Ki-Ha
    • Journal of the Korean institute of surface engineering
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    • v.52 no.1
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    • pp.6-15
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    • 2019
  • Metal-halide perovskite (MHP) solar cell is a promising candidate for next-generation flexible devices and the BIPV (Building-integrated photovoltaics) because it can exhibit high power conversion efficiencies over 23%, good bendability and low processing cost. However, MHP solar cells are commonly fabricated by the spin coating that is not a reliable method to produce large-scale commercial solar cells. A shear coating can be one of the potential candidates for the large-scale deposition method of MHP films. In this work, the influences of the process parameters such as solvents of precursor solution, substrate temperature, concentrations of precursor solution, and annealing time on the thin film growth of MHP were investigated for the shear coating process. This study presents the possibility of the shear coating process for large-scaled perovskite film fabrication and reveals the role of process condition in the thin film growth of perovskites.

A Study on the Power Performance Measurement of Transparent Thin-film PV Windows of BIPV Depending on the Inclined Angle (건물일체형 투명 PV복층창의 설치조건에 따른 단위출력당 발전특성 분석연구)

  • An, Young-Sub;Song, Jong-Hwa;Kim, Seok-Ge;Lee, Sung-Jin;Yoon, Jong-Ho
    • 한국태양에너지학회:학술대회논문집
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    • 2008.04a
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    • pp.55-60
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    • 2008
  • 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 $30^{\circ}C$ 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 844.4kWh/kWp/year, declination angle 1,060kWh/kWp/year and vertical angle 431.6 kWh/kWp/year.

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A study on Design and Efficient Management of 30kW BIPV System (건물통합형 30kW태양광발전시스템의 설계 및 효율적 운전관리에 관한 연구)

  • Park, Se-Joon;Lim, Jung-Yeol;Yoon, Seok-Am;Cha, In-Su
    • Journal of the Korean Solar Energy Society
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    • v.28 no.3
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    • pp.15-20
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    • 2008
  • Building-integrated photovoltaics(BIPV) are increasingly incorporated into new domestic and industrial buildings as a principal or ancillary source of electrical power, and are one of the fastest growing segments of the photovoltaic industry. This paper presents design, operational features analysis, and PCS(Power Conditioning System) of grid-connected 30kW BIPV set up on the library of Dongshin University. For a sustainable photovoltaics system in this area, the data of the BIPV system are collected and analyzed by monitoring system using LabView. PCS of the grid-connected BIPV system, also, is designed for optimal operation with characteristics suggested in this paper.

Experimental Study on the Thermal Effect of BIPV Modules Depending on the Ventilation Type of PV Module Backside (후면 환기조건에 따른 건물외피용 태양광발전(BIPV) 모듈의 열적 영향에 관한 실험연구)

  • Yoon, Jong-Ho;Kim, Jae-Ung
    • Journal of the Korean Solar Energy Society
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    • v.26 no.1
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    • pp.81-89
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    • 2006
  • Building integrated photovoltaic (BIPV) system operates as a multi-functional building construction material. They not only produce electricity, but also are building integral components such as facade, roof, window and shading device. On the other hands lots of architectural considerations should be reflected such as Installation position, shading, temperature effect and so on. As PV modules function like building envelope in BIPV, combined thermal and PV performance should be simultaneously evaluated This study is on the combined thermal and PV performance evaluation of BIPV modules. The purpose of this study is to investigate a temperature effect of PV module depending on the ventilation type of PV module backside. Test cell experiment was performed to identify the thermal and power effect of PV modules. Measurement results on the correlation of temperature and power generation were obtained. Those results can be utilized for the development of optimal BIPV installation details in the very early design stage.

Selective Transmission Properties of Al-Ti Based Oxide Thin Films (Al-Ti계 산화물 박막의 조성에 따른 선택적 투과 특성)

  • Bang, Ki Su;Jeong, So Un;Lim, Jung Wook;Lee, Seung-Yun
    • Journal of the Korean Vacuum Society
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    • v.22 no.1
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    • pp.13-19
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    • 2013
  • It is expected that progress in building-integrated photovoltaic (BIPV) systems, improving the functionality and design of buildings, will be accelerated in the coming years. While the dye sensitized solar cell is considered one of the most important technologies in the BIPV field, the transparent silicon based thin film solar cell fabricated by thin film processes has drawn attention as a novel alternative. When the selective transmitting layer is applied to the solar cell, the conversion efficiency is improved due to the re-reflection of infrared light into an absorber layer with the transmission of visible light through the solar cell. In this work, we prepared Al-Ti based oxide thin films using cost-effective sputter deposition and examined their selective transmitting characteristics with various compositions. The transmittance and reflectance of the Al-Ti based oxide thin film changed with the variation of its composition, and the selective transmitting property was observed in the sample with the 25 nm-thick AlTiO layer. It is considered that the realization of transparent solar cells and the improvement of their conversion efficiency can be achieved by introducing the Al-Ti based selective transmitting layer.

Laser patterning process for a-Si:H single junction module fabrication (레이저 가공에 의한 비정질 실리콘 박막 태양전지 모듈 제조)

  • Lee, Hae-Seok;Eo, Young-Joo;Lee, Heon-Min;Lee, Don-Hee
    • 한국신재생에너지학회:학술대회논문집
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    • 2007.11a
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    • pp.281-284
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    • 2007
  • Recently, we have developed p-i-n a-Si:H single junction thin film solar cells with RF (13.56MHz) plasma enhanced chemical vapor deposition (PECVD) system, and also successfully fabricated the mini modules ($>300cm^2$), using the laser patterning technique to form an integrated series connection. The efficiency of a mini module was 7.4% ($Area=305cm^2$, Isc=0.25A, Voc=14.74V, FF=62%). To fabricate large area modules, it is important to optimise the integrated series connection, without damaging the cell. We have newly installed the laser patterning equipment that consists of two different lasers, $SHG-YVO_4$ (${\lambda}=0.532{\mu}m$) and YAG (${\lambda}=1.064{\mu}m$). The mini-modules are formed through several scribed lines such as pattern-l (front TCO), pattern-2 (PV layers) and pattern-3 (BR/back contact). However, in the case of pattern-3, a high-energy part of laser shot damaged the textured surface of the front TCO, so that the resistance between the each cells decreases due to an incomplete isolation. In this study, the re-deposition of SnOx from the front TCO, Zn (BR layer) and Al (back contact) on the sidewalls of pattern-3 scribed lines was observed. Moreover, re-crystallization of a-Si:H layers due to thermal damage by laser patterning was evaluated. These cause an increase of a leakage current, result in a low efficiency of module. To optimize a-Si:H single junction thin film modules, a laser beam profile was changed, and its effect on isolation of scribed lines is discussed in this paper.

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A Study on the Application Effect of DSSC BIPV Window System in Office Building Considering Cooling.Heating.Lighting Energy (냉.난방 및 조명에너지를 통합 고려한 DSSC BIPV창호의 사무소건물 적용 효과 연구)

  • Sim, Se-Ra;Yoon, Jong-Ho;Shin, U-Cheul
    • Journal of the Korean Solar Energy Society
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    • v.31 no.3
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    • pp.67-72
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    • 2011
  • The aim of this study is to evaluate how much would the building energy consumption be saved by applying DSSC BIPV window which is possible to control the transmittance and express the color in the office building. For this, physical characteristics such as transmittance and reflectance, U-factor of DSSC areanalyzed and an annual energy consumption that is connected to dimming control is calculated when DSSC BIPV window is applied by alternate clear window system. As a result, It is possible to reduce the anannual energy consumption as much as4.1% by just change the clear double window system to DSSC BIPV double window system because the major factor to reduce energy consumption in the office that has much cooling load than other building is SHGC. When the thermal insulation properties of DSSC BIPV window with low-e coating and making triple window are improved, energy saving ratio is about 9%. Plus, energy saving ratio of 25~28% in lighting energy consumption is possible when the dimming control system with DSSC BIPV window is adopt.