Title:	FEM Simulation of Influence of Different Polymeric Encapsulation Materials and Backsheets on Deformations in Strings of Shingled Solar Cells under Mechanical and Thermal Loading
Author(s):	M. Lang, G. Oreski, P. Fuchs, E. Helfer, A. Halm, M. Klenk
Keywords:	Polymer Film, PV Materials, Design, PV Module
Topic:	Photovoltaic Modules and BoS Components
Subtopic:	Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods
Event:	8th World Conference on Photovoltaic Energy Conversion
Session:	3DV.3.21
ISBN:	3-936338-86-8
Price:	0,00 EUR
Document(s):	poster

Abstract/Summary:

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In general, thermo-mechanical stresses in photovoltaic (PV) modules arise from external forces deflecting the module and variations of temperature, hence stresses induced by differing coefficients of thermal expansion (CTE) of the different materials in the module laminate. The current study applies structural mechanics simulations based on the Finite Element Method (FEM) to investigate the impact of external mechanical and thermal loads on strings of shingled solar cells within a PV module according to well established standards IEC 61215:2-2016 and IEC 61215:2005. The objective is to perform a sensitivity study on the influence of using different polymeric encapsulants and backsheets with the purpose of reducing stresses in the ECA joint and the adjacent silicon cells.