WELCOME

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

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INTRODUCTION

• 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.

SOLAR POWER-AN INEXHAUSTIBLE ENERGY SOURCE

•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 absorptionSolar panels absorbs maximum sunlight and converts it to electricity

WHAT IS A SOLAR TRACKER ?

•For orienting panel towards the sun

•Have light sensors and mechanical arrangement

• Tracks maximum intensity

NEED OF SOLAR TRACKER

Commercial purpose

•Increase solar panel output

•Maximize power per unit area

•Able to grab energy throughout the day

DUAL AXIS TRACKERS

• 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.

BLOCK DIAGRAM

X DIRECTION MOTOR

LIGHT DECTECTOR (X DIRECTION)

LIGHT DECTECTOR (Y DIRECTION)

COMPARATOR MOTOR DRIVING CIRCUIT

Y DIRECTION MOTOR

SUNLIGHT

SUNLIGHT

SOLAR PANEL

LIGHT DETECTOR

LDR

LIGHT DEPENDENT RESISTOR

•Used to sense or detect light

•Resistor whose resistance decreases with increase in intensity of light

•Made of high resistance semiconductor

COMPARATOR

+output

input

Vref

LM339•Have four digital comparators in one IC

•Output will be either high or low

•Uses single supply unlike other comparators

MOTOR DRIVING CIRCUIT

L293D

L293D•H bridge motor driving circuit

•Controls two motors in both direction

•Takes digital input

H BRIDGE CIRCUIT

M

S1 S2

S3 S4

MOTORS

GEARED MOTOR

GEARED MOTOR

• Two geared motors in X and Y direction

•Used to transmit torque to the panel arrangement

DIODES

1N4148

1N4148

•Standard switching diode

•Low cost, long life and dependable

•Used in switching application up to 100 MHz

CIRUIT DIAGRAM

ADVANTAGES

• More efficient compared to normal arrangement.• Energy output increases up to 30-

40% than normal stationary. arrangement. • High degree of accuracy. • Eco friendly.

DISADVANTAGES

• Extent of cloud cover. • Damages in storm.

SOLAR PANEL OUTPUT

USES• For solar photovoltaic (PV) panel applications• For solar thermal dish/engine applications

PV PANEL

DISH PANEL

CONCLUSION

• 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.

Any Queries ? ? ?

THANKS