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How does the rear irradiance intesity affect the uncertainty of the IV measurement for bifacial solar modules?

Equivalent series resistance

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The intensity of rear irradiance significantly impacts the uncertainty of IV measurements for bifacial solar modules. Research findings suggest that utilizing a bifacial/monofacial reference module pair can accurately determine the bifacial performance ratio (PRBIFI) and mitigate complexities in sensor placement on the rear plane-of-array (POA). Moreover, variations in series and shunt resistances are influenced by the Bifaciality parameter, which increases power production and alters the current-voltage characteristics based on the incident light. Additionally, the spectral irradiance incident on the rear of modules affects the degradation and performance of backsheets, highlighting the importance of understanding the impact of rear irradiance on overall module efficiency.

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Open access•Journal Article•DOI Measuring Irradiance with Bifacial Reference Panels Nicholas Riedel-Lyngskar, Martin Bartholomaus, John Vedde, Peter Behrensdorff Poulsen, Sergiu Spataru - Show less +4 more 05 Jun 2022-IEEE Journal of Photovoltaics 2 Citations	The rear irradiance intensity affects uncertainty in IV measurements for bifacial solar modules, with a bifacial/monofacial reference pair providing accurate performance ratio determination and simplifying sensor placement.
Open access•Proceedings Article•DOI Measuring Irradiance with Bifacial Reference Panels 05 Jun 2022	The uncertainty of IV measurements for bifacial solar modules is assessed using a bifacial/monofacial reference module pair, showing accurate determination of performance ratio and minimizing sensor placement issues.
DOI Effect of Rear Irradiance on Series and Shunt Resistance of n-Type PERT Bifacial Silicon Module Sirirat Tonsue, Anon Namin, Jutturit Thongporn - Show less +2 more 09 Mar 2022	Rear irradiance intensity affects series resistance (Rs) and shunt resistance (Rsh) in bifacial solar modules, impacting current-voltage characteristics and potentially reducing uncertainty in IV measurements.
Proceedings Article•DOI Effect of Rear Irradiance on Series and Shunt Resistance of n-Type PERT Bifacial Silicon Module 09 Mar 2022	Rear irradiance intensity affects the series and shunt resistance of bifacial solar modules, impacting the IV measurement uncertainty due to changes in resistances with varying incident light levels.

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