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Unique Soiling Detection System for PV Modules
M. Korevaar, J. Mes, A. Alami Merrouni, T. Bergmans, P. Nepal, X. van Mechelen
Environmental Effect, Monitoring, Optical Losses, Performance, Plant Control
PV Systems - Performance, Applications and Integration
Subtopic: Operation, Performance and Maintenance of PV Systems
Event: 35th European Photovoltaic Solar Energy Conference and Exhibition
Session: 6DV.1.8
1988 - 1990
ISBN: 3-936338-50-7
Paper DOI: 10.4229/35thEUPVSEC20182018-6DV.1.8
0,00 EUR
Document(s): paper, poster


In recent years, photovoltaic panels have emerged as one of the leading renewable energy technologies. PV plant performance is, aside from hardware, determined by three main parameters: irradiance, temperature and soiling. For soiling measurement, existing systems use cleaned and uncleaned PV panels or cells. These systems require manual cleaning or moving parts or liquids. We present the DustIQ for accurate and effective soiling measurement without these drawbacks. The DustIQ uses the Optical Soiling Measurement (OSM) technology to determine the soiling. It uses a LED and photodiode to measure the scattering signal of soiling on the top of the PV glass. We investigated the effect of grain size on the system and no influence of the grain size on the linear relation of the DustIQ diode signal and transmission loss was found. The DustIQ also contains a PV cell, which allows the user to characterize for the local dust using the local dust calibration. Test results from as test locations in Morocco show a stable operation and an increase in soiling in late spring and summer. A preliminary comparison with a cleaned and soiled PV panel is favourable. The DustIQ is a good solution for measuring the soiling on PV panels.