• Title/Summary/Keyword: Solar Cell System

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Analysis of improved solar cell modeling (개선된 태양전지 모델링 해석)

  • Kim Sun-Ja;Jeong Byung-Hwan;Park Jong-Chan;Choe Gyu-Ha
    • Proceedings of the KIPE Conference
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    • 2004.07a
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    • pp.113-116
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    • 2004
  • Output power of a photovoltaic system changes continuously as it strongly depends on the weather condition(isolation and temperature). Therefore, it is necessary the theoretical model realizes the electrical output characteristics of solar cell. Of several theoretical models for real solar cell, both parametric model and interpolation model are used widely. In this paper, we have propose a improved model of solar cell using its output characteristics that can be extended to calculate the rear solar cell characteristics at various temperatures and insolation. And more, the theoretical research of several models of solar cell using simulation analysis.

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A Novel Simulation model of Solar Cell using EMTDC (EMTDC를 이용한 태양전지의 새로운 시뮬레이션 모델)

  • Park, Min-Won;Kim, Bong-Tae;Lee, Jae-Deuk;Yu, In-Keun;Sung, Ki-Chul
    • Proceedings of the KIEE Conference
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    • 2000.11a
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    • pp.113-115
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    • 2000
  • So far, it was very difficult to simulate the dispersed generation system including PV generation system using EMTP or EMTDC because the source of the dispersed generation system has a particular VI characteristic equation. In this paper, a novel simulation method of PV generation system has proposed and a new solar cell component for EMTDC is also developed. The VI characteristic equation of solar cell is used in order to realize the solar generation system in EMTDC simulation. Consequently the simulation of PV power generation system using field data is realized and acceptable results, which show close match between the real data of PV panel and the simulated data, were obtained.

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A study on the V-I tracer to abstract the characteristic parameter of solar cell (Solar cell 특성 parameter 추출용 V-I tracer에 관한 연구)

  • Park, Sang-Soo;Lee, Seok-Ju;Seo, Hyo-Ryong;Park, Min-Won;Yu, In-Keun
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.1966-1967
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    • 2007
  • Photovoltaic(PV) power generation system [1-2] has been extensively studied and watched with keen interest as a clean and renewable power source. So hardware and software studies strongly indicate the feasibility of commercially producing a low cost, user-friendly solar cell curve tracer. Generally, 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 detail parameters of solar cell ; A, Rs, and Rsh, which satisfies the user, who aims at the analysis of the development PV power generation system; advanced simulation. In this paper, the proposed method gives us the satisfactory results to abstract the detail parameters of solar cell ; A, Rs, and Rsh

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Multi-Junction Space Solar Cell Health Checking Method using Electroluminescence Phenomena (전계발광현상을 이용한 우주용 다접합 태양전지의 건전성 평가기법)

  • Park, Je-Hong;Chang, Young-Keun
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.37 no.10
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    • pp.1017-1026
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    • 2009
  • The solar cell system operates by facing the sun-light. Minor cracks, static discharge, and thermal shock that can happen during production/testing phase can lead to degradation in performance during operation, since solar cells are exposed to extreme thermal/mechanical environment in space. In order to detect small cracks and internal damages in the solar cells due to thermal shocks, which are the core units of a solar cell system, expensive equipment, complicated test process, and much time are required. Therefore, a qualitative method for easily and quickly testing the 'health' of solar cell functionality is required. This dissertation describes a theoretical and technical grounds for quickly and easily evaluating the health of solar cells using electroluminescence effect of Gallium-Arsenide solar cells that are most widely used by spacecrafts in recent years. Also described in the dissertation is the technical issues and constraining factors for applying the proposed method to actual space-rated solar cell systems.

A Study on High Efficiency DC-AC Inverter of Solar Cell Power System Used in Fire Emergency Equipment (소방 비상용 태양전지 발전시스템의 고효율 직류-교류 인버터 설계에 관한 연구)

  • Kwak, Dong-Kurl;Lee, Bong-Seob
    • Journal of Energy Engineering
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    • v.15 no.3 s.47
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    • pp.181-187
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    • 2006
  • This paper is proposed to a solar cell power system used in fire emergency equipment. Also it is designed with a high efficiency power converter in order to increase efficiency of power system. The controlling switches used in DC-DC booster chopper and DC-AC inverter are operated with soft switching, which is applied to resonant circuit method to reduce switching loss. The result is that the system gets to high efficiency. In this paper, A detection circuit of maximum power point of solar cell is described in this paper. And the performance evaluations for the photovoltaic power system of high efficiency are examined by the analysis of a new tracking controller with a maximum power $P_{max}$ detection of solar cell.

Design of Solar Cell Cooling System Using Convection Phenomena

  • Lee, Jae-hyuk
    • International journal of advanced smart convergence
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    • v.9 no.2
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    • pp.123-128
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    • 2020
  • We constructed a cooling system for solar cells using convection phenomena and investigated its cooling performance. The cooling system didn't need any driving power or water resources. The convection cooler manufactured with a right-triangle shape of an air duct was attached to the rear of the solar cell to confirm that cooling was performed using convection phenomena. When the ratio of duct width to attachment surface width was 3:7, and the ratio of entrance height and exit height of duct was 5:1, it showed the best cooling performance. Comparative experiments with solar cells without convection cooler showed that cooling effects from 16.5℃ to 20.9℃ occurred after 40 minutes exposed to the 1300W Xenon lamp condition.

Physical-based Dye-sensitized Solar Cell Equivalent Circuit Modeling and Performance Analysis (물리 기반의 염료 감응형 태양전지 등가회로 모델링 및 성능 분석)

  • Wonbok Lee;Junhyeok Song;Hwijun Choi;Bonyong Gu;Jonghwan Lee
    • Journal of the Semiconductor & Display Technology
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    • v.22 no.3
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    • pp.67-72
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    • 2023
  • In this paper, a dye-sensitized solar cell (DSSC), one of the representative third-generation solar cells with eco-friendly materials and processes compared to other solar cells, was modeled using MATLAB/Simulink. The simulation was conducted by designating values of series resistance, parallel resistance, light absorption coefficient, and thin film electrode thickness, which are directly related to the efficiency of dye-sensitized solar cells, as arbitrary experimental values. In order to analyze the performance of dye-sensitized solar cells, the optimal value among each parameter experimental value related to efficiency was found using formulas for fill factor (FF) and conversion efficiency.

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Research about most suitable control of small scale system link type photovoltaic system (소규모 계통연계형 태양광 시스템의 최적제어에 대한 연구)

  • Hwang L. H.;Jang E. S.;Nam W. Y.
    • Proceedings of the KIPE Conference
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    • 2003.11a
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    • pp.238-243
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    • 2003
  • The solar cells should be operated at the maximum power point because its output characteristics are greatly fluctuated on the variation of insolation, temperature and load. The output power of solar cell is DC, therefore it is necessary to install an inverter among electric power converts. The inverter have to supply a sinusoidal current and voltage to the load and the interactive utility line. In the paper, the proposes a photovoltaic system designed with a step up chopper and single phase PWM voltage source inverter. Synchronous signal and control signal was processed by microprocessor for stable modulation. The step up chopper operates in continuous mode by adjusting the duty ratio so that the photovoltaic system tracks the maximum power point of solar cell without any influence on the variation of insolation and temperature because solar cell has typical dropping character. The single phase PWM voltage source inverter consists of complex type of electric power converter to compensate for the defect, that is, solar cell cannot be developed continuously by connecting with the source of electric power, from 10 to $20\%$. The single phase PWM voltage source inverter operates in situation that its output voltage is in same phase with the utility voltage. The inverter supplies an ac power with high factor and low level of harmonics to the load and the utility power system.

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Controller Design of Stand-Alone Photovoltaic System with Charge-Discharge Controller for Remote lsland Power Supply

  • Kang, Ki-Hwan;Yu, Gwon-Jong;Song, Jinsoo;Jeong, Young-Seok;Kang, Ki-Hwan;Lee, Byoung-Ku;Choe, Gyu-Ha
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.972-977
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    • 1998
  • This paper deals with stand-alone Photovoltaic system(SPVS) with charge and discharge controller. Main power source of SPVS are generally solar cell and battery. Therefore SPVS can be classified into variable types in accordance with connection method between battery and solar cell array. Mainly used one of them is direct connection type which has advantages such as simple structure and simple controller. However most big drawback of this system is energy loss by voltage disharmony between solar cell array and battery. Therefore SPVS with charge and discharge controller which can operate solar cell array at maximum power point is designed and experimented with a laboratory prototype.

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Design of Stand-Alone Photovoltaic System with Charge-Discharge Controller (충방전 제어기를 이용한 독립형 태양광 발전시스템의 설계)

  • 김홍성;유권종;송진수;이병구;정영석;강기환;최규하
    • Proceedings of the KIPE Conference
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    • 1998.07a
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    • pp.103-108
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    • 1998
  • This paper deals with stand-alone Photovoltaic system(SPVS) with charge and discharge controller. Main power source of SPVS are generally solar cell and battery. Therefore SPVS can be classified into variable types in accordance with connection type between battery and solar cell. Mainly used one of them is direct connection type which has advantages such as simple structure and simple controller. However most big drawback of this system is energy loss by voltage disharmony between solar cell and battery. Therefore SPVS with charge and discharge controller which can operate solar cell at maximum power point is designed and analyzed by simulation in this paper.

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