本文選題：太陽電池參數(shù) + 提取方法��； 參考：《南昌航空大學(xué)》2014年碩士論文

【摘要】：光伏發(fā)電的核心部件是太陽電池，衡量電池性能的重要依據(jù)是其光生電流，反向飽和電流，理想因子，串聯(lián)電阻，并聯(lián)電阻5個電性參數(shù)；但是這些參數(shù)隱含在一個描述太陽電池電流電壓特性的方程中。由于該方程是一個復(fù)雜的超越非線性函數(shù)方程,無法直接求解各參數(shù)；所以如何基于太陽電池電流輸出方程,然后根據(jù)電流電壓特性實驗曲線，簡單而又精確地確定以上5個參數(shù)成為太陽電池應(yīng)用研究的一個重要方向。 本文在前人研究的基礎(chǔ)上做了以下工作：(1)分析比較了解析方法和顯函數(shù)方法。研究了兩種方法在提取太陽電池參數(shù)過程中優(yōu)劣，并分析了兩種誤差來源。(2)基于太陽電池電流電壓特性提出四種提取太陽電池特性參數(shù)方法。第一種方法是基于太陽電池光生電流遠(yuǎn)大于反向飽和電流,并聯(lián)電阻遠(yuǎn)大于串聯(lián)電阻以及光生電流近似等于負(fù)的短路電流3個邊界條件,結(jié)合太陽電池在短路點、開路點和最大功率點處的極值表述,提出的一種解析求解太陽電池5個電性參數(shù)的方法。第二種方法是在第一種方法的基礎(chǔ)上對最大功率點處求二階導(dǎo)數(shù)的解析求解上述五個參數(shù)的方法。第三種方法是將二階導(dǎo)方法與Lambert-W函數(shù)結(jié)合提取太陽電池參數(shù)的方法。第四種方法是基于太陽電池電流輸出方程及對太陽電池I-V曲線分段擬合的基礎(chǔ)上，，利用Lambert-W函數(shù)，將電流輸出方程顯化，對分段擬合方程進行積分，建立求解太陽電池5個電性參數(shù)的非齊次方程組，得到各個參數(shù)的解析解。(3)分析比較了前三種方法提取太陽電池參數(shù)的優(yōu)劣，并比較了三種方法所提取硅電池參數(shù)在不同光照強度和光入射角下的變化，并分析變化原因。(4)運用第四種方法提取了不同光照條件下的鎵砷太陽電池的參數(shù)，分析了參數(shù)隨著光入射角的變化原因。 本文提出的四種方法應(yīng)用無論應(yīng)用于實驗數(shù)據(jù)還是文獻數(shù)據(jù)，擬合結(jié)果都很好，本文在提取參數(shù)的過程中力求找到提取過程更加簡單，提取結(jié)果更加精確的方法。本研究為太陽能電池生產(chǎn)及測試提供了一定理論基礎(chǔ)，為當(dāng)前太陽能電池參數(shù)提取方法提供了一定理論指導(dǎo)。
[Abstract]:The core component of photovoltaic power generation is solar cell. The important basis for measuring the performance of the cell is its photogenerated current, reverse saturation current, ideal factor, series resistance and parallel resistance. But these parameters are implicit in an equation that describes the current and voltage characteristics of solar cells. As the equation is a complex transcendental nonlinear function equation, it can not directly solve the parameters, so how to base on the solar cell current output equation, and then according to the current and voltage characteristics of the experimental curve, Simple and accurate determination of the above five parameters has become an important research direction of solar cell application. In this paper, the following works are done on the basis of previous studies: (1) the analytical method and explicit function method are analyzed and compared. The advantages and disadvantages of the two methods in the extraction of solar cell parameters are studied, and two sources of errors are analyzed. (2) based on the current and voltage characteristics of solar cells, four methods are proposed to extract the parameters of solar cells. The first method is based on three boundary conditions: the photogenerated current of the solar cell is far greater than the reverse saturation current, the parallel resistance is far greater than the series resistance, and the photogenerated current is approximately equal to negative short-circuit current, and the solar cell is at the short-circuit point. This paper presents an analytical method for solving the five electrical parameters of solar cells by expressing the extreme values at open circuit points and maximum power points. The second method is based on the first method to solve the above five parameters analytically for the second order derivative at the maximum power point. The third method is to combine the second-order derivative method with Lambert-W function to extract the solar cell parameters. The fourth method is based on the current output equation of solar cell and the piecewise fitting of I-V curve of solar cell. Using Lambert-W function, the current output equation is explicit, and the piecewise fitting equation is integrated. The inhomogeneous equations for solving five electrical parameters of solar cells are established, and the analytical solutions of each parameter are obtained. (3) the advantages and disadvantages of the first three methods for extracting solar cell parameters are analyzed and compared. The parameters of silicon cells extracted by three methods under different illumination intensity and incident angle were compared and the reasons were analyzed. (4) the parameters of gallium arsenic solar cells under different illumination conditions were extracted by the fourth method. The reason of the change of parameters with the incident angle of light is analyzed. The four methods proposed in this paper are applied to the experimental data and the literature data, and the fitting results are very good. In the process of extracting the parameters, we try to find the method that is simpler and more accurate in the process of extracting the parameters. This study provides a theoretical basis for solar cell production and testing, and provides a theoretical guide for the current solar cell parameter extraction method.
【學(xué)位授予單位】：南昌航空大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM914.4

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