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PROJECT GUIDEPROJECT GUIDE

MR.VENUGOPALDepartment of Electrical and

Electronics Engineering

Govt. Engineering College, Thrissur

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PROJECT ASSOCIATESPROJECT ASSOCIATES

ANAND ACHUTHANKUTTY

ANANDRAJ P

ANIL KUMAR M

ANISH A NAIR

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This project helps for power generation

by setting the equipment to get

maximum sunlight automatically. By the device we could make an

efficient solar energy system which has

remarkable efficiency thanconventional solar systems.

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PROJECT DEFINITIONPROJECT DEFINITION

Solar tracker is a mechanical arrangement forpointing a surface directly at the sun with thehelp of electronic control circuitry

This system is tracking for maximum intensityof light.

When there is decrease in intensity of light,this system automatically changes its directionto get maximum intensity of light.

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SINGLE AXIS TRACKING

The system has a single axis on which

the solar array rotates.

Least complicatedUses a simple motor and contrl system

which turns the solar panel from east to

west each day.

This keeps the panel pointed in a close

approximation to the sun

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TECHNICAL CONTENTS

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BUFFER2

FLOW CHART

BUFFER1

SENSORS

COMPARATOR

2PANEL

MOTORDIFFERENTIAL

AMPLIFIER

MOTOR

DRIVER

CIRCUIT

COMPARATOR

1

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CIRCUIT DESCRIPTION

SENSORS

LDRs are used as the sensors.

Its resistance is quite high under darkcondition.

When it absorbs light , electrons are liberatedand the conductivity of material increases.

.

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BUFFER AMPLIFIER

Unity gain amplifierA high input impedence

Very low output impedence

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COMPARATOR

Compares a signal voltage applied at one

input with a reference voltage at the other.There are two types of comparators:

Inverting comparator-A fixed reference voltage

is applied to the +ve input .Output is positivewhen input is greater than reference voltage.

Non Inverting Comparator-A fixed reference

voltage is applied to the ve input. Output is

negative when input is greater than the

reference voltage.

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DC MOTOR

Works on the principle that when a current

carrying conductor is placed in a magneticfield, it experiences a force whose direction

is given by Flemings Left Hand Rule

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WORKING OF SOLAR

TRACKERUsing sensors ,we sense the direction

of maximum intensity of light.

The difference between the outputs of

the sensors is determined (V01)

This difference is compared using two

comparators C1 and C2

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C1 is non-inverting with threshold

voltage 0.5V.

C2 is inverting with threshold voltage

0V.

The comparison circuit controls how

the motor has to be rotated so that the

solar panel will receive maximum

intensity of light from the sun

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When light falls obliquely ,surface is

rotated towards the direction of light.

When the surface is aligned

perpendicular to the incident light, both

sensors are equally lit and motor stops

rotating.

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APPLICATIONS

SATELLITES

SOLAR WATER HEATER

GENERATION OF ELECTRICITY

SOLAR FURNACES

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THANK YOU