Influence of Temperature and Solar Irradiation on the Performance of Electrochemical Batteries in an Autonomous Photovoltaic System in Burkina Faso

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Résumé

Electrochemical batteries are very often used in photovoltaic systems as storage technologies to ensure a permanent supply of electrical energy to the load. However, these batteries are not always adapted to the different climatic conditions in Burkina Faso and to load demand. As a result, battery life is shortened and the overall cost of PV systems increases. The aim of this article is to study the influence of temperature and irradiation on the performance of lithium-ion (Li-ion), lead-acid (Pb-ac) and nickel-cadmium (Ni-Cd) batteries in a photovoltaic system. To achieve this objective, mathematical and electrical modelling of a PV system and of the different battery types was carried out, taking into account solar temperature and irradiation, in the Matlab/Simulink environment. The results obtained from the simulations show that the temperature of the batteries increases as the charging current increases. Also, the voltage and temperature of Lithium-ion and Nickel-Cadmium batteries show better stability during charging and discharging than Lead-acid batteries. This stability could increase the number of cycles of Li-ion batteries and thus increase their lifespan [1]. This work will eventually enable the spread of PV systems and their accessibility to all sections of the population of Burkina Faso.

Mots-clés

Batteries, Solar Photovoltaic Systems, State of Charge, Temperature, Matlab/Simulink