本文選題：太陽能電池 + I?V特性��； 參考：《渤海大學(xué)》2015年碩士論文

【摘要】：太陽能光伏發(fā)電具有分布廣泛、無污染、不受地域限制等獨特的優(yōu)點,近年來正飛速發(fā)展。為了使太陽能光伏發(fā)電系統(tǒng)實現(xiàn)最優(yōu)化設(shè)計和運行,需要利用一個精確的太陽能光伏發(fā)電系統(tǒng)仿真模型進行實驗測試獲得相關(guān)參數(shù)。太陽能光伏組件是太陽能發(fā)電系統(tǒng)的核心部分,也是太陽能發(fā)電系統(tǒng)中價值最高的部分,它是由多個單體的太陽能電池片根據(jù)需要串、并聯(lián)組成的。因此,需要建立準確的太陽能光伏電池仿真模型。太陽能電池模型通常有兩種:單二極管模型和雙二極管模型。這兩種模型的電流-電壓(I?V)特性在數(shù)學(xué)描述上是隱式超越方程。根據(jù)I?V特性方程,通過數(shù)值方法可以得到對應(yīng)不同電壓(電流)的電流(電壓)值,然而,即使有相對好的初始猜值,這些數(shù)值方法往往也難以收斂。因此,在實際的太陽能光伏發(fā)電系統(tǒng)設(shè)計與運行中,設(shè)計工程師需要一個簡單、快速、有效的太陽能電池的顯式模型。本文主要研究太陽能電池模型的顯式建模方法。首先,提出一種新的解析方法建模太陽能電池的串聯(lián)電阻,結(jié)合其他研究者提出的四個電池參數(shù)(并聯(lián)電阻,反向飽和電流,光生電流,理想因子)模型,能夠有效地估計太陽能電池單二極管模型的I?V特性。其次,利用泰勒展開式表達太陽能電池雙二極管模型的指數(shù)函數(shù),得到雙二極管模型的顯式表達式,進而提出兩個基于泰勒展開式的新的七參數(shù)提取模型。最后,利用Padé逼近表達太陽能電池雙二極管模型的指數(shù)函數(shù),得到雙二極管模型的顯式表達式,進而提出兩個基于Padé逼近的新的七參數(shù)提取模型。針對上述提出的顯式建模方法,本文選擇不同技術(shù)的硅太陽能組件進行仿真驗證。仿真結(jié)果表明,本文提出的模型是準確、有效、可行的。
[Abstract]:Solar photovoltaic power generation has been developing rapidly in recent years because of its unique advantages such as wide distribution, no pollution and no geographical restrictions. In order to optimize the design and operation of solar photovoltaic system, it is necessary to use an accurate simulation model of solar photovoltaic system to obtain the relevant parameters. Solar photovoltaic module is the core part of solar power system and also the most valuable part of solar power system. Therefore, it is necessary to establish an accurate simulation model of solar photovoltaic cells. There are usually two solar cell models: single diode model and double diode model. The characteristics of the two models are implicit transcendental equations in mathematical description. The current (voltage) corresponding to different voltage (current) can be obtained by numerical method according to the Igna V characteristic equation. However, even if there is a relatively good initial guess, these numerical methods are often difficult to converge. Therefore, in the actual design and operation of solar photovoltaic system, the design engineer needs a simple, fast and effective explicit model of solar cell. This paper mainly studies the explicit modeling method of solar cell model. First of all, a new analytical method is proposed to model the series resistance of solar cells, combining with the four cell parameters (parallel resistance, reverse saturation current, photogenerated current, ideal factor) proposed by other researchers. It can effectively estimate the IV characteristics of the single diode model of solar cells. Secondly, the exponential function of double diode model of solar cell is expressed by Taylor expansion, and the explicit expression of double diode model is obtained, and two new seven parameter extraction models based on Taylor expansion are proposed. Finally, Pad 茅 approximation is used to express the exponential function of the double diode model of solar cells, and the explicit expression of the double diode model is obtained, and two new seven-parameter extraction models based on Pad 茅 approximation are proposed. In view of the explicit modeling method proposed above, the silicon solar modules with different technologies are selected for simulation verification in this paper. The simulation results show that the proposed model is accurate, effective and feasible.
【學(xué)位授予單位】：渤海大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM914.4

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1 杜存嬌;光伏電池I-V特性顯式模型表達方法研究[D];渤海大學(xué);2014年

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本文編號：1831360