Development of a mobile autonomous solar power plant for the needs of agriculture

Abstract

 The method of mathematical modeling was used to calculate the temperature distribution in bifacial solar cells. It has been established that the differences in the configurations of the photovoltaic generator lie only in the fact that in a double-sided element, a greater outflow of heat comes from the back side. At the same time, bifacial solar cells demonstrate increased generation of electrical energy. The calculations performed confirm the validity of the choice in favor of two-sided solar cells, which is important when using the developed configuration of a photovoltaic generator. Based on the analysis of the technologies available on the market for photovoltaic conversion of solar energy into electricity, a configuration of a photovoltaic generator based on bifacial heterojunction silicon solar panels was developed. The developed configuration is a moving platform with a photovoltaic system installed on it, equipped with a light flux collection system.A 2-axis servo system has been developed for the general case of flat mounting of solar modules. The drive with a travel range of 350 mm is installed in the north-south direction, 450 mm — east-west. The task was to find the right shoulder to ensure symmetry and the maximum angle of rotation along the axis. As a result, solutions were determined for the north-south and east-west directions.In addition, on the basis of a microcontroller, a circuit diagram of a device was developed that provides a given control algorithm for a solar tracker. Also, the scheme includes a GPS/GLONASS module to obtain the exact coordinates of the installation location and time synchronization.