本文選題：光伏組件 + 力學(xué)性能��； 參考：《西南科技大學(xué)》2015年碩士論文

【摘要】：隨著光伏組件的廣泛應(yīng)用,光伏組件在實(shí)際應(yīng)用過程中會(huì)承受風(fēng)、雪、地震等荷載作用,這對(duì)光伏組件的強(qiáng)度和剛度提出了更高的要求。因此研究光伏組件的力學(xué)性能及在荷載作用下光伏組件電性能的變化規(guī)律尤其重要。本文通過理論分析,提出非晶硅薄膜光伏簡(jiǎn)化力學(xué)模型。并對(duì)光伏組件中的EVA膠、非晶硅薄膜電池的基本力學(xué)性能進(jìn)行了測(cè)試,得到它們的彈性模量、屈服強(qiáng)度、極限強(qiáng)度等基本力學(xué)參數(shù)。為進(jìn)行光伏組件參數(shù)化的數(shù)值分析提供了計(jì)算所需的力學(xué)參數(shù),并為光伏組件生產(chǎn)企業(yè)提供了選材參考依據(jù)。為研究光伏組件的力學(xué)性能和電性能,設(shè)計(jì)了一個(gè)試驗(yàn)方案,分別對(duì)JX-1、DX-2試件進(jìn)行平壓,分析了試件的破壞特征、承載能力、電性能。研究結(jié)果表明:①非晶硅薄膜光伏組件的極限應(yīng),極限應(yīng)力,極限荷載。②荷載加載初期,組件輸出電壓下降緩慢,當(dāng)組件中玻璃發(fā)生破壞后,組件的輸出電壓才會(huì)急劇衰減。組件的結(jié)構(gòu)強(qiáng)度和輸出電壓的衰減率共同決定非晶硅薄膜光伏組件的控制應(yīng)力。為了保證組件結(jié)構(gòu)使用安全和組件能正常輸出電壓,組件的控制應(yīng)力應(yīng)在47.71MPa左右,組件的允許荷載為8.46KPa。③組件滿足現(xiàn)有規(guī)范中規(guī)定的機(jī)械荷載試驗(yàn)要求。采用ANSYS軟件建立了計(jì)算模型,驗(yàn)證了簡(jiǎn)化力學(xué)模型的正確性,討論玻璃厚度、EVA膠厚度、組件長(zhǎng)寬比對(duì)試件的力學(xué)性能影響。分析結(jié)果表明:①光伏組件中玻璃厚度增加,組件承載力提高,各層材料中心點(diǎn)應(yīng)力減小。在光伏組件總玻璃厚度不變的情況下,基底玻璃厚度與蓋板玻璃厚度比大于1時(shí)相對(duì)于基底玻璃厚度與蓋板玻璃厚度比小于1時(shí)的承載能力提高了,各層材料中心點(diǎn)應(yīng)力減小了。②EVA膠厚度不宜超過0.64mm。③在四邊簡(jiǎn)支的情況下,組件的長(zhǎng)寬比在1:1時(shí),各層材料應(yīng)力是最小的,但是在實(shí)際工程中,為了方便施工及美觀,習(xí)慣使組件的長(zhǎng)寬比大于1。在保證組件實(shí)際工程應(yīng)用中的力學(xué)承載能力及方便施工,建議組件長(zhǎng)寬比在1:1~2:1之間。
[Abstract]:With the wide application of photovoltaic modules, photovoltaic modules will withstand wind, snow, earthquake and other loads in the process of practical application, which put forward a higher demand for the strength and stiffness of photovoltaic modules. Therefore, it is very important to study the mechanical properties of photovoltaic modules and the variation of electrical properties of photovoltaic modules under load. In this paper, a simplified photovoltaic mechanical model of amorphous silicon film is proposed by theoretical analysis. The basic mechanical properties of EVA adhesive and amorphous silicon thin film cell in photovoltaic module were tested, and their elastic modulus, yield strength and ultimate strength were obtained. The mechanical parameters are provided for the parameterized numerical analysis of photovoltaic modules, and the reference basis for the selection of materials is provided for the photovoltaic module manufacturing enterprises. In order to study the mechanical and electrical properties of the photovoltaic module, a test scheme was designed. The JX-1 / DX-2 specimen was pressured, and the failure characteristics, bearing capacity and electrical properties of the specimen were analyzed. The results show that the output voltage of the component decreases slowly at the initial loading stage, and the output voltage of the module decreases sharply when the glass in the module is destroyed. The control stress of the amorphous silicon thin film photovoltaic module is determined by the structural strength of the module and the attenuation rate of the output voltage. In order to ensure the safety of the component structure and the normal output voltage of the component, the control stress of the assembly should be about 47.71MPa, and the allowable load of the assembly is that the 8.46KPa.3 component meets the requirements of mechanical load test stipulated in the existing specifications. The calculation model was established by using ANSYS software to verify the correctness of the simplified mechanical model. The influence of glass thickness and the ratio of length to width of components on the mechanical properties of the specimen was discussed. The results show that the thickness of glass increases, the bearing capacity of the module increases, and the stress at the center of each layer decreases. Under the condition that the total glass thickness of photovoltaic module is constant, the bearing capacity of the ratio of substrate glass thickness to cover glass thickness is increased when the ratio of substrate glass thickness to cover glass thickness is greater than 1, and the ratio of substrate glass thickness to cover glass thickness is less than 1. The stress at the center point of each layer is reduced. 2EVA adhesive thickness should not exceed that of 0.64mm.3. When the ratio of length to width of the assembly is 1:1, the stress of each layer is minimum. However, in practical engineering, in order to facilitate construction and beautiful appearance, the stress of each layer is minimum when the ratio of length to width is 1:1. It is customary to have a aspect ratio of a component greater than 1. It is suggested that the ratio of length to width of components should be between 1: 1 and 2: 1 in order to ensure the mechanical bearing capacity of the components in practical engineering applications and to facilitate construction.
【學(xué)位授予單位】：西南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM914.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 劉躍進(jìn);;太陽能板與鋁合金框架膠接接頭力學(xué)性能分析[J];現(xiàn)代制造工程;2009年09期

相關(guān)碩士學(xué)位論文 前1條

1 李云虎;太陽能電池組件封裝工藝研究[D];南華大學(xué);2008年

，

本文編號(hào)：1904252