An Improved Design of Photo-Voltaic Solar Tracking System Based on FPGA

In this paper, an improved sun-tracking system using the FPGA chip as controlling platform is proposed. The system computes the sun trails precisely through tracking algorithm, chooses different tracking frequencies in accordance with illumination intensity, and the tracking precision is guaranteed by the angle-sensor which can detect mechanical deviation. The simulating test shows that this system is of high precision and strong reliability, which can improve the efficiency of photovoltaic system greatly. All the source codes of sun-tracking system are realized by HDL Verilog and expected improved results are confirmed by the field test.