本文選題：熱斑 + 光伏組件�。� 參考：《內(nèi)蒙古大學(xué)》2017年碩士論文

【摘要】：隨著太陽能發(fā)電技術(shù)的應(yīng)用越來越廣泛,光伏裝機(jī)容量持續(xù)提升。為了保證光伏電站的發(fā)電量,很多降低光伏組件發(fā)電效率及使用壽命的負(fù)面問題急需得到解決。熱斑效應(yīng)便是最常見的一個(gè),它不但會(huì)使組件的發(fā)電效率大幅降低,也給電站帶來大量潛在隱患,所以對(duì)熱斑問題展開深入探究及討論是十分有必要的。本文以達(dá)茂旗天潤(rùn)風(fēng)光電場(chǎng)的部分組件為研究對(duì)象,對(duì)熱斑效應(yīng)進(jìn)行了深入的探討,主要研究?jī)?nèi)容如下:首先,使用紅外熱像儀對(duì)光伏電站中的部分組件進(jìn)行熱斑檢測(cè),統(tǒng)計(jì)產(chǎn)生熱斑問題的光伏組件和電池片數(shù)量,結(jié)合電站的實(shí)際情況,對(duì)導(dǎo)致組件產(chǎn)生熱斑效應(yīng)的各種因素展開討論,得出熱斑形成的主要原因。其次,從被測(cè)組件中分別選取2個(gè)正常工作的組件和2個(gè)發(fā)生熱斑效應(yīng)的組件,使用便攜式太陽能I-V測(cè)試儀對(duì)其進(jìn)行I-V特性測(cè)試,將4個(gè)組件的實(shí)測(cè)性能參數(shù)進(jìn)行對(duì)比,證明了熱斑問題能顯著降低組件發(fā)電效率。最后,通過MATLAB/Simulink軟件建立仿真模型,分別得出組件被部分遮擋情況下不并聯(lián)與并聯(lián)旁路二極管時(shí)的I-V、P-V特性曲線。仿真結(jié)果表明:組件接線盒內(nèi)旁路二極管對(duì)于解決熱斑問題起到了關(guān)鍵性作用;同時(shí)發(fā)現(xiàn)接入旁路二極管使P-V曲線呈現(xiàn)出多峰值特點(diǎn)。這些結(jié)果為進(jìn)一步研究多峰值最大功率點(diǎn)跟蹤技術(shù)打下了基礎(chǔ)。
[Abstract]:With the increasing application of solar power generation technology, the installed capacity of photovoltaic has been continuously improved. In order to ensure the power generation of photovoltaic power plants, many negative problems of reducing the generation efficiency and service life of photovoltaic modules need to be solved urgently. The heat spot effect is the most common one. It not only reduces the generation efficiency of the module greatly, but also brings a lot of potential hidden trouble to the power station. So it is necessary to deeply explore and discuss the heat spot problem. In this paper, some components of Tianrun solar electric field in Damao Banner are taken as the research object, and the heat spot effect is deeply discussed. The main research contents are as follows: firstly, the infrared thermal imager is used to detect the heat spot of some components in photovoltaic power station. According to the actual situation of the power station, the various factors that lead to the heat spot effect of the module are discussed, and the main reasons for the formation of the heat spot are obtained. Secondly, two normal components and two modules with heat spot effect were selected from the tested modules, and the I-V characteristics of the modules were tested by portable solar I-V tester, and the measured performance parameters of the four modules were compared. It is proved that the heat spot problem can significantly reduce the generation efficiency of the module. Finally, the simulation model is established by MATLAB/Simulink software, and the I-V P-V characteristic curves are obtained when the components are partially occluded without parallel and parallel bypass diodes. The simulation results show that the by-pass diode in the junction box plays a key role in solving the heat spot problem, and it is also found that the P-V curve has the characteristics of multiple peaks due to the access to the bypass diode. These results lay a foundation for the further study of multi-peak maximum power point tracking technology.
【學(xué)位授予單位】：內(nèi)蒙古大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP391.9;TM615

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