CHAPTER ONE

INTRODUCTION

1.1 NEED FOR THE PROJECT

The general objective of the system is to provide efficiency steadiness in

the use of power appliances by ensuring continuous availability of power

supply even in the absence of mains. Uninterruptability of the system made it

possible to eliminate all suspense from mains outage during the execution of an

important and urgent assignment as may be required.

For better production of the system the system was operated at a fully

charged condition of the battery.

The project was rated 200W of 220V and 50Hz. It was expected that at

this condition it was favourable to carry load of the stipulated power. Loads of

low power factors are not helpful since they produce spikes. Overloading is not

potent to provide zero change over time and the inverter had LEDs which

indicates mains failure and battery discharge and system fault.

1.2 SCOPE OF STUDY

This solar power source makes it possible to provide a clean reliable

supply of alternative electricity free of sags or surges which could be found in

the line voltage frequency.

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The solar power system (SPS) system achieved this by direct current from

solar panel and by rectifying the standard main supply using the direct current

to charge the batteries and to provide clean alternative power by passing the

energy a filter system.

It has zero change over time and LEDs which indicates mains fail and

battery discharge level and it provides 100% protection against line noise

spikes surges and audio frequency interference.

1.3 DEFINITION OF TERMS

1. Inverter unit: This unit converts a DC voltage into AC voltage with the

help of the inverter unit.

2. Automatic Control Unit: This provides all the required control needed to

meet up the objective of the whole system

3. Battery Unit: This is a secondary cell unit capable of storing enough DC

voltage from either sun or AC main of which is later converted to AC

voltage.

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