Research of Energy Characteristics of Solar Batteries

Renewable power engineering is one of the priority directions in the sphere of energy supply and the development of disturbed generation. The investments on the usage of renewable energy are higher than on fossil fuels. The most perspective renewable source is solar energy. At that time solar batteries are widely spread in a photoelectric system. The research and the modeling of operating conditions of a solar battery are the main stages in choosing and determining the energy parameters of a photoelectric system. The parameters on the basis of a replacement scheme of such solar battery are examined in the paper and the model describing current-voltage and volt-watt characteristics is improved. The presented mathematical model reproduces the operating conditions and the energetic characteristics of the solar battery in changing operating conditions. The results of the research have shown a good convergence of the theoretical and experimental data, the error does not exceed 5 %.