High Efficient Solar Grid System

Abstract

Generally solar panels are used to generate electricity by receiving light energy from the sun. In a conventional solar power system, parallel connections are made between two panels. In a parallel connection, current gets summed up and the voltage remains the same. During day time, the light intensity will be very less which is not sufficient to charge the battery because of the low voltage. At this time if series connections are made between the solar panels, the voltage gets summed up which is sufficient to charge the battery. Whenever the sun light falls on the solar panel, the electrical energy is produced. When the light intensity is less, there will be less voltage at the output of the panel which is not sufficient to charge the battery. If the output voltage is below the threshold value, the control unit sends a signal to the connection switching module to change the connection from parallel to series. Our project is to design a module which automatically switches the series and parallel connections of the solar panels based on the light intensity.