International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2556

Full Length Research Paper

Impact of dust on the photovoltaic (PV) modules characteristics after an exposition year in Sahelian environment: The case of Senegal

Ababacar Ndiaye1*, Cheikh M. F. Kébé1, Pape A. Ndiaye1, Abdérafi Charki2, Abdessamad Kobi2 and Vincent Sambou1
1Centre International de Formation et de Recherche en Energie Solaire (CIFRES), Ecole Supérieure Polytechnique-UCAD, BP 5085 Dakar-Fann, Sénégal. 2Université d’Angers-ISTIA-LASQUO, 62 Avenue Notre Dame du Lac 49000 Angers, France
Email: [email protected]

  •  Accepted: 13 May 2013
  •  Published: 09 June 2013


The objective of this paper is to find the effect of dust on the performance of photovoltaic modules. To this end, the International Center for Research and Training in solar energy at Dakar University and the Lasquo-ISTIA Laboratory of Angers University have put in place a research project in order to investigate the impact of Sahelian climatic conditions on the photovoltaic (PV) modules characteristics. Accordingly, monocrystalline silicon (mc-Si) PV module and a silicon polycrystalline (pc-Si) PV module are installed at Dakar University and monitored during one operation year without cleaning. We evaluate the variation depending on the dust of electrical characteristics such as I-V and P-V curves, open-circuit voltage(Voc), short-circuit current (Isc), maximum ouput current (Imax), maximum output voltage (Vmax), maximum power output (Pmax) and fill factor (FF). This work has highlighted theimpact of dust on the Current-Voltage (I-V) and Power-Voltage (P-V) characteristics of PVmodules (mc-Si and pc-Si) with the advent of the mismatch effect. Pmax, Imax, Isc and FF are the most affected performance characteristics by the dust deposits on the PV modules surface. The maximum power output (Pmax) loss can be from 18 to 78% respectively forthe polycrystalline module (pc-Si) and monocrystalline module (mc-si). Imax loss can varyfrom 23 to 80% for respectively pc-Si and mc-Si modules. However, the maximum voltage output (Vmax) and the open-circuit voltage (Voc) are not affected by dust accumulation for both technologies studied. The fill factor (FF) may decrease from 2% for the pc-Si module to 17% for the mc-Si module.


Key words: Photovoltaic module, photovoltaic (PV) module performance parameters, dust effect.