Automatic Solar Tracking System Using Siemens PLC

The increasing demand for sustainable and renewable energy sources has led to a surge in the adoption of solar power technologies. Solar tracking systems are a crucial element in enhancing the efficiency of solar photovoltaic (PV) panels by maximizing their exposure to solar radiation throughout the day. This research paper presents the design, implementation, and performance evaluation of a single-axis solar tracking system (SASTS) employing Siemens programmable logic controller (PLC) technology. The system uses a light sensor to detect the sun’s position and a motor to rotate the PV panel. The PLC is used to control the motor and to calculate the optimal angle of the PV panel. The system was tested in a laboratory setting and was shown to increase the efficiency. The system is also scalable and can be easily adapted to different PV panel sizes and mounting configurations.