Solar tracker with battery

Bluetooth®

The solar tracker is a technical innovation for tracking the sunlight, in order to increase the yield of photovoltaic panels. The productivity gain can reach 40% with a 2-axis tracking system. TRACSOL2 is a teaching solution for learning this technique.

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TRACSOL2 is an educational solution for studying solar tracker technology. This technical innovation tracks the sun's rays to increase the efficiency of photovoltaic panels. Productivity gains can reach 40% with this type of installation.
The system, mounted on a wheeled aluminum chassis, is equipped with an electric actuator for vertical (zenithal) orientation and a geared motor for horizontal (azimuth) orientation. These are controlled by an Arduino® microcontroller, which uses four light sensors to locate the strongest light source. The free, French-language Arduino IDE® software included with the model allows users to view and modify the microcontroller's programming code via a USB connection.
It also allows users to visualize light levels in real time on a graph. TRACSOL2 is completely self-sufficient thanks to batteries recharged by the solar panels. No 230V mains connection is required. Only the artificial solar power source for using TRACSOL2 inside a building is powered by 230 VAC. The voltage from the solar panels is available at two safety terminals.

EDUCATIONAL OBJECTIVES
• Study and commissioning of a solar tracker.
• Understanding the operation of solar cells.
• Mastering the wiring of components in an off-grid photovoltaic system.
• Visualizing the system's electrical parameters via Bluetooth®.
• Comparing the performance of a photovoltaic system with and without a solar tracker.
• Visualizing and understanding Arduino® programming code.

Practical works
• Course on different solar panel technologies (Monocrystalline, Polycrystalline, Amorphous)
• Study on solar panel positioning for maximum efficiency.
• Study of solar irradiation.
• Review of direct, diffuse, and reflected solar radiation.
• Comparison of power outputs measured with fixed panels and tracking panels.
• Study and creation of the wiring diagram for an off-grid solar power system.
• Measurement of current and voltage at various points in the wiring.
• Interpretation of measurements and calculation of efficiency.
• Calculation of battery discharge time based on load.
• Downloading and use of the Bluetooth® application.
• Study and creation of the wiring diagram for the solar tracking system.
• Review of the Arduino® programming language code.