Automatic sun tracking system. ppt

Automatic solar tracker is a system which helps to boost the energy production of solar panel. The whole system even does not need any external power source,

1. AUTOMATIC SOLAR TRACKING SYSTEM By: Saumya Ranjan Behura Regd No .-1521292032 Seminar on

2. INTRODUCTION A solar tracking system can be used as a power generating method from sunlight. This project helps for power generation by setting the equipment to get maximum intensity sunlight automatically. When there is decrease in intensity of light, this system automatically changes its direction to get maximum intensity of light.

3. CONTENTS:- What is a Solar Tracker ? Need for a Sun Tracking System Condition for Maximum Output Basic Components The Working Applications Advantages & Disadvantages Conclusion References

4. What is a solar Tracker ? A solar tracker is a generic term used to describe devices that orient or align various payloads toward the sun. Example for payloads are photovoltaic panels, reflectors, Collectors, lenses or other optical devices . The system focuses on the optimization of the electric energy produced by photovoltaic cells through the development of a sun-tracking system.

5. Need For A Sun Tracking System Global worming has increased the demand and request for green energy produced by renewal sources as solar power. Solar energy has been the power supply of choice for industrial application where power is required at remote locations . Solar tracking is increasingly applied as a effective power generation .

6. Conditions For Maximum Output The difference between the incident ray and the reflected ray should be equal to zero, i.e. the rays should be perpendicular to the panel. The altitude is directly proportional to the efficiency of the system up to a certain limit. Very clear sky and clean atmosphere contributes a bit more to the efficiency of the system.

7. Basic Components The Solar Panel Stepper Motor Actuator Microcontroller A Display Unit (Optional) Interfacing Cables

8. The Working Interfacing between hardware and microcontroller Inputs to microcontroller Controlling constraints

9. Circuit Diagram

10. The Inputs The various positions of the sun over a year for a particular geographical location is given as the primary input to the microcontroller. The irradiance of the sun for a particular geographical location over a year is the input for the microcontroller. The real time clocking is enabled in the microcontroller.

11. Controlling Constraints The microcontroller is programmed to orient the panel at optimum position against the sun, via comparing to the inputs given. The microcontroller is set with a lower tolerance for the voltage produced. If the voltage produced is above the tolerance then it holds the position of the panel. If the voltage falls below the tolerance, then the panel changes the position in the forward direction.

12. Applications Can be used for small & medium scale power generations. For power generation at remote places where power lines are not accessible. For domestic backup power systems.

13. Advantages Solar tracking systems continually orient photovoltaic panels towards the sun and can help maximize your investment in your PV system. One time investment, which provides higher efficiency & flexibility on dependency over other sources. Tracking systems can help reducing emissions and can contribute against global warming. Bulk implementations of tracking systems help reduced consumption of power by other sources. It enhances the clean and emission free power production.

14. Disadvantages Initial investment is high on solar panels. It’s a bit of difficult for servicing, as the tracking systems are not quite popular regionally. Moving parts and gears which will require regular maintenance. May require repair or replacement of broken parts over a long run.

15. Conclusion On one hand we can see the worlds energy resources depletion to be a major problem. On the other hand global warming, which is a major concern. Switching to solar power, which is clean and green and enhancing its efficiency by using sun trackers is a great option in the near future .

16. References www.studymafia.org www.wikipedia.com www.google.com www.pptplanet.com