Compressive Stress Strategies For Reduction Of Cracked Cell Related Degradation Rates In New Solar Panels And Power Recovery In Damaged Solar Panels

Keywords

Cracks; mechanical load testing; photovoltaic modules; reliability; silicon

Abstract

Some crystalline silicon PV system underperformance is due to the presence of cracked solar cells, and this represents a financial risk for both already installed and future systems. This work describes compressive stress strategies and rear side pressure strategies that can be employed in new panel construction to prevent crack formation as front side mechanical loads from handling, wind, and snow are applied during shipping, installation and in the field. These strategies can also slow the opening of cracks and the related power loss for any cracks that do form. Furthermore, we present concepts for the retrofitting of older installed systems to close already open cracks and regain lost power, or to slow the future degradation of systems with panels that are sensitive to cracked cells.

Publication Date

11-26-2018

Publication Title

2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

Number of Pages

2820-2825

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/PVSC.2018.8547207

Socpus ID

85059889912 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85059889912

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