Single Axis Solar Tracking System Circuit Diagram. The solar tracker comprises comparator ic lm339 h bridge motor driver ic l293d ic2 and a few discrete components. A single axis solar tracker improves solar output by around 25 and a dual axis tracker by around 40 according to this article on altestore.
One of them is the single axis solar tracker and the other is dual axis. Dual axis solar trackers uses the motor to move the solar panel in all four directions north south east west. This solar tracker control system is designed to take light measurements from the east and west left and right side of the solar panel and determine which way to move the panel to point it directly at.
The movement of the sun is detected using two ldrs which are arranged on the solar panel in such a way that the intensity of light falling on it varies as the direction of sun changes.
Light dependent resistors ldr1 through ldr4 are used as sensors to detect the panel s position relative to the sun. One of them is the single axis solar tracker and the other is dual axis. The connection point of ldr1 and r1 is the output of the ldr1 which is connected to pin 3 of the lm358 ic. Similarly ldr2 is connected with r2 10k in series.
