This document discusses a dual axis solar tracker. It begins with an introduction and need for solar trackers. It then discusses the advantages of dual axis trackers in tracking the sun's east-west and north-south motion for increased power output of approximately 40%. The document includes block diagrams of the circuitry used in the solar tracker, which uses light detectors, a motor driving circuit, and geared motors to orient the solar panel towards the sun throughout the day. It concludes by stating that solar tracking systems are more efficient than fixed panels and can help reduce energy crisis by making better use of solar energy.

2. • Introduction
• Need for solar tracker
• Dual axis tracker
• Block diagram
• Circuit diagram
• Advantages
• Disadvantages
• Uses
• Conclusion

3. • In the verge of a major energy crisis as
energy consumption is increasing day by day
and energy sources are depleting.
•Solar energy is a renewable source of
energy which can avoid this crisis to an
extent.
SOLAR ENERGY :
Major Eco-friendly & Pollution less method
of producing the electricity today.

4. •Solar power ,the best alternative
for a renewable source.
•Cost effective.
•Improved operating efficiency.
•Unlimited reserve because
source is sun .
Solar panels ,modern
technology of solar
energy absorption
Solar panels absorbs
maximum sunlight and
converts it to electricity

5. • For orienting panel
towards the sun
• Have light sensors and
mechanical arrangement
• Tracks maximum
intensity

6. Commercial purpose
•Increase solar panel output
•Maximize power per unit
area
•Able to grab energy
throughout the day

7. • Double axis solar trackers
have both a horizontal and a
vertical axle and so can track
the Sun's apparent motion
exactly anywhere in the
world.
DUAL AXIS SOLAR TRACKER :
•Dual axis trackers track the sun
both East to West and North to
South for added power output
(approx 40% gain) and
convenience.

8. X DIRECTION
MOTOR
LIGHT
DECTECTOR
(X DIRECTION)
LIGHT
DECTECTOR
(Y DIRECTION)
COMPARATOR MOTOR DRIVING
CIRCUIT
Y DIRECTION
MOTOR
SUNLIGHT
SUNLIGHT
SOLAR PANEL

9. LDR

10. •Used to sense or detect light
•Resistor whose resistance
decreases with increase in intensity
of light
•Made of high resistance
semiconductor

11. +
output
input
Vref

12. •Have four digital comparators in
one IC
•Output will be either high or low
•Uses single supply unlike other
comparators

13. L293D

14. •H bridge motor driving circuit
•Controls two motors in both direction
•Takes digital input

15. M
S1 S2
S3 S4

16. GEARED MOTOR

17. • Two geared motors in X and Y direction
•Used to transmit torque to the panel arrangement

18. 1N4148

19. •Standard switching diode
•Low cost, long life and dependable
•Used in switching application up to
100 MHz

21. • More efficient compared to normal
arrangement.
• Energy output increases up to 30-
40% than normal stationary.
arrangement.
• High degree of accuracy.
• Eco friendly.

22. • Extent of cloud cover.
• Damages in storm.

24. • For solar photovoltaic (PV) panel applications
• For solar thermal dish/engine applications
PV PANEL
DISH PANEL

25. • Solar tracking system is more efficient
than ordinary panels.
• Able to reduce energy crisis to a great
extent with effective use of solar energy
by means of tracking.

26. Any Queries ? ? ?