Call For Paper Volume: V, Issue: 06 | JUNE 2026 | International Journal of Advanced Trends in Engineering and Management (IJATEM)
Volume | Issue | | Paper ID: ICNGECT_2026_029 | DOI: https://doi.org/10.59544/yauk7197/icngect26p29

Design and Implementation of a Dual-Axis Closed-Loop Solar Tracking System for Enhanced PV Energy Yield

J. Jenisha, S. Latha, K. Nandakumar

This paper presents the design and implementation of an automated dual-axis solar tracking system utilizing a closed-loop control mechanism to optimize the energy output of photovoltaic (PV) panels. The system employs light-dependent resistors (LDRs) as primary sensing elements to detect the sun's position in both azimuth and elevation planes. Sensor signals are processed by an embedded logic controller, which computes positional errors and commands a pair of high-torque DC gear motors through dedicated driver circuits to maintain the PV panel surface perpendicular to incident solar radiation throughout the day. A real-time clock module facilitates automatic system reset to the eastern horizon at dawn, ensuring reliable daily operation. Comparative performance analysis against a fixed-tilt PV panel of identical rated capacity demonstrated a 30–40% improvement in energy generation under diverse weather conditions. The proposed system offers a robust, cost-effective, and scalable solution for enhancing solar conversion efficiency, positioning it as a viable option for residential and small-scale commercial photovoltaic installations.