Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805
Solar energy is one of the most renewable and easily accessible sources of energy. Modern solar panels are simple and reliable in operation. They do not require additional resources, not prone to mechanical wear and do not need maintenance. Identification of characteristics, studies of changes in the process of operation in the presence of environmental influences, changes in the parameters of the electrical network is an actual problem that will be considered not only today but also tomorrow. Since knowledge of these quantities will allow the manufacturer to predict, monitor and edit the technical parameters at the stage of solar cell production. The model of a solar battery with a power of 270 W is represented in the form of a mathematical polynomial dependence of the maximum power of the source of alternative energy from solar radiation. This model is obtained by approximating curves constructed on the basis of modeling in the Matlab program. The objective function of the mathematical model is represented by a polynomial of the second order. For different operating temperatures, the coefficients of this polynomial are determined. A simplified block diagram of calculating the mathematical dependence is presented. The above block diagram allows the user to navigate through the stages of selecting technical parameters, modeling and obtaining adequate results. The approximation error does not exceed 1% in the temperature range from -20 to 25 °C. In the region around 0 °C, its insignificant increase is observed, which indicates a greater complex dependence, which is better characterized by polynomials of higher orders. The proposed mathematical model for determining the electrical parameters of a solar cell is adequate.
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15 Dec 2018

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