Agro Fossil Free - Determination of basic operating parameters of Solar Photovoltaic modules for farms

Descripción general

Solar Photovoltaic Modules (SPM) are popular in agriculture. For a lot of small farms, the main source of electrical energy is electric generators driven by Internal Combustion Engines (ICE), since installation of electrical networks is economically unprofitable. In these conditions, SPM are economically and environmentally promising, since it does not require the consumption of fuels and lubricants does not harm the environment. Determination of the main SPM operating parameters in 2 modes is considered in this research. In the cases when the panels oriented towards the sun (tracking mode) and in a stationary state with orientation to the south (without tracking mode). The dependences of current, voltage and power on time and density of solar radiation were measured. Accordingly, the voltage and current of Transportable Photovoltaic Unit (TPU), the charging current and the voltage of the batteries, the voltage at the output of the inverter, the temperature and humidity of the outside air and the electrical energy consumption by the electric receivers were recorded. The study of the TPU operation showed that the mode of orientation to the sun increases the daytime power generation by 25, ..., 33% in comparison with the fixed installation of Solar Panels (SP). The analysis showed the discrepancy between SP passport data and the experimental results. The decrease in electricity generation was 14% compared to the expected estimates.