Impact of External Electric Field on the Performance Parameters of PV Solar Cells under High Light Concentration
Soro Boubacar *
Laboratory of Thermal and Renewable Energies, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso and Institut des Sciences et Technologie, Ecole Normale Supérieure, Ouagadougou, Burkina Faso.
Tchouadep Guy Serge
Laboratory of Thermal and Renewable Energies, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
Sourabie Idrissa
Laboratory of Thermal and Renewable Energies, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
Kpeli Esso-Ehanam Tchedre
Laboratory of Thermal and Renewable Energies, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
Son Souleymane
Laboratory of Thermal and Renewable Energies, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
Zerbo Issa
Laboratory of Thermal and Renewable Energies, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
Zoungrana Martial
Laboratory of Thermal and Renewable Energies, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
*Author to whom correspondence should be addressed.
Abstract
The performance of a photovoltaic solar cell depends on a number of external and internal factors. It then appears imperative that investigations be carried out to identify the factors favourable or unfavourable to the proper operation of the photovoltaic cell. It is in this context that we study the influence of an external variable electric field on the electric parameters of a photovoltaic solar cell under light concentration of 50 suns. After the presentation of the model of a photovoltaic solar cell used in our study and formulated the assumptions, we have established the expressions of electric parameters as function of the external electric field E0. Then, by using numerical simulation with MATCAD software, we plotted the curves of electric parameters versus the external electric field. From analysis of the curves, it appears that the short-circuit photocurrent density, electric power, fill factor and conversion efficiency increases with the increase in the intensity of the external electric field. On the other hand, it appears a drop in open circuit photovoltage and series resistance with the increase in the intensity of the external electric field.
Keywords: Electric strength, electric power delivered, series resistance, conversion efficiency