Title:	Novel PV Module Interconnection Design and Mounting Orientation to Reduce Inhomogeneous Soiling Losses in Desert Regions
Author(s):	H. Hanifi, M.Z. Khan, B. Jaeckel, C. Hagendorf, A.A. Abdallah, K. Ilse, J. Schneider
Topic:	Photovoltaic Modules and BoS Components
Subtopic:	PV Module Design, Manufacture, Performance and Reliability
Event:	37th European Photovoltaic Solar Energy Conference and Exhibition
Session:	4AV.2.28
ISBN:	3-936338-73-6
Price:	0,00 EUR
Document(s):	poster

Abstract/Summary:

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Photovoltaic (PV) modules in desert areas benefit from high irradiation levels but suffer, among other parameters, from high soiling ratios, which influence the output power of the modules. Power loss due to soiling can reach more than 20% per month [1] if not cleaned. In addition, inhomogeneous soiling by accumulation of dust on the corners and bottom of the modules (see Figure 1) may lead to total power loss of the modules. Modification in cell sizes, electrical interconnection and mounting orientation of the modules can reduce the losses from inhomogeneous soiling. In this paper, we evaluate the performance of three module designs with full- and half-sized solar cells with different interconnection designs for different inhomogeneous soiling conditions. The modules are investigated in two mounting orientation of portrait and landscape installation with two scenarios of corner and edge soiling. The simulation results supported by the experimental data indicate favorable mounting positions with up to 65% higher output power and minimum current mismatch depending on the module design and soiling patterns.