Influence of Material Models on the Numerical Predictions of Thermomechanical Behavior of Silicon Photovoltaic Modules

Author:

Al-Manaseer Saif Addeen,Correia J. PedroORCID,Touchal SihamORCID

Abstract

Silicon photovoltaic (PV) modules are made using different materials, namely glass, EVA, silicon, and a backsheet material such as PET. To develop a numerical thermomechanical PV module model capable of providing accurate predictions, the influence of the material models on the predictions must be analyzed. A two-dimensional, thermomechanical, finite-element (FE) model of PV modules was created, and it was able to reproduce some experimental measurements. It was then used to study the influence of the material models on the numerical predictions. Attention was given to the material models of EVA and silicon. Firstly, the material model of EVA was considered, and the predictions of the following models were compared: linear elastic, temperature-dependent linear elastic, and viscoelastic. Secondly, as the coefficient of thermal expansion (CTE) plays a major role in the thermomechanical behavior, the influence of its temperature dependence on the predictions was compared. The numerical results show that it is necessary to use a viscoelastic EVA model to reproduce the experimental data of the change in cells gap. It was also found that the temperature dependence of the CTE of EVA and silicon has significant influence on the module deflection and stress, hence it should be taken into consideration in future numerical studies.

Publisher

TIB Open Publishing

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3