Automatic Dual-axis Solar Tracking System for Parabolic dish

In country like India demand of energy increases with increase in population so the use of renewable and natural sources of energy like wind energy, tidal energy, solar energy etc is the need of time in country. In this paper we present development and experimental study of two axis automatic control of solar tracking system using Arduino. In hardware development five light dependent resistors (LDR) has been used to sense and gather maximum solar energy. Two permanent magnet DC motors are used to move the solar dish according to the solar energy sensed by LDR. In software part we design a controller which will move the collector dish to track the sun. The controller uses LDR sensors as input and permanent magnet DC geared motors as an output. LDR are used to sense the intensity of light and generate the signals which will be further processed by ATmega328 microcontroller. Microcontroller executes the algorithm and gives control command to motor driver. This paper describes development of automatic dual axis solar tracking system for solar parabolic dish.