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首页> 外文学位 >DETERMINATION OF THE SOLAR CELL EQUATION PARAMETERS: NEW METHODS, EXISTING METHODS, ANALYSIS AND COMPARISON.
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DETERMINATION OF THE SOLAR CELL EQUATION PARAMETERS: NEW METHODS, EXISTING METHODS, ANALYSIS AND COMPARISON.

机译：太阳电池方程参数的确定：新方法，现有方法，分析和比较。

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摘要

Presented here is an analysis of some of the existing methods used for the determination of the series resistance of solar cells which is one of the key parameters in solar cell fabrication and technology together with the diode ideality factor and the reverse saturation current. These methods are based on the network analysis of the single-exponential lumped constant parameters model which has been accepted as being operationally sufficient to describe the current-voltage characteristics of the solar cell.;Three new methods are proposed in this study. One of the methods presents a new approach in determining the solar cell equation parameters. The new approach relies upon treating the diode ideality factor of the solar cell as a variable that is a function of both the terminal current and the light intensity level. The method uses two I-V output curves at different illumination levels in determining all solar cell parameters: The series resistance, the diode ideality factor and the reverse saturation current. Although somehow tedious, the new approach shows that, for accurate modeling of solar cells and prediction of illuminated characteristics at different light levels based on the single-exponential model, the diode ideality factor should be treated as a variable while the series resistance is held constant. Comparison between all methods is presented and a resonable judgement and recommendations concerning the best method to be used are given.;The methods analyzed in this study are divided into two main groups. Methods using two I-V characteristics and methods using a single I-V output curve. For comparison purposes, all methods are applied first using data extracted from existing I-V curves and then using in-lab measurements of a commercial solar cell. It is demonstrated that the determination of the series resistance of solar cells using two I-V characteristics has several advantages over methods using a single I-V output curve. It becomes evident that methods which use a single I-V output curve are only accurate for cells operating under very high illumination conditions. At normal intensities, however, such methods result in erroneous R(,s) values. This is due to the assumption of a constant diode ideality factor along the entire I-V output curve used in the derivation of these methods. It is shown that this assumption is inaccurate at normal intensity levels and can be appropriate only under very high illuminations.
机译：本文介绍了一些用于确定太阳能电池串联电阻的现有方法的分析，这是太阳能电池制造和技术中的关键参数之一，以及二极管理想因子和反向饱和电流。这些方法基于对单指数集总常数参数模型的网络分析，该模型已被认为足以描述太阳能电池的电流-电压特性。其中一种方法提出了一种确定太阳能电池方程参数的新方法。新方法依赖于将太阳能电池的二极管理想因子视为一个变量，该变量是终端电流和光强度水平的函数。在确定所有太阳能电池参数时，该方法使用两个照度不同的I-V输出曲线：串联电阻，二极管理想因数和反向饱和电流。尽管有些繁琐，但新方法表明，为了基于单指数模型准确建模太阳能电池并预测不同光水平下的照明特性，应在串联电阻保持恒定的情况下将二极管理想因子视为变量。 。提出了所有方法之间的比较，并给出了关于最佳方法的合理判断和建议。;本研究中分析的方法分为两个主要组。使用两个I-V特性的方法和使用单个I-V输出曲线的方法。为了进行比较，首先使用从现有I-V曲线中提取的数据，然后使用商用太阳能电池的实验室测量来应用所有方法。已经证明，与使用单个I-V输出曲线的方法相比，使用两个I-V特性确定太阳能电池的串联电阻具有多个优势。显而易见的是，使用单个I-V输出曲线的方法仅对在非常高的照明条件下工作的电池才是准确的。但是，在正常强度下，此类方法会导致错误的R（，s）值。这是由于在推导这些方法时使用的沿着整个I-V输出曲线的二极管理想因数恒定的缘故。结果表明，该假设在正常强度水平下是不准确的，并且仅在非常高的光照下才适用。

著录项

  • 作者

    HAMDY, MOHAMED ADEL.;

  • 作者单位

    The University of Arizona.;

  • 授予单位 The University of Arizona.;
  • 学科 Physics Condensed Matter.
  • 学位 Ph.D.
  • 年度 1985
  • 页码 163 p.
  • 总页数 163
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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