Download complete project materials on Design And Construction Of A 24v Dc Input Circuit From Battery With 3000watt Output
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CHAPTER ONE
INTRODUCTION
Due to today’s total dependence on the electricity and frequent power outages, back up power is becoming a necessity. Emergency back up power system can provide electrical power to outages. David Prince probably coined the term inverter. It is unlikely that any living person can now establish with certainty that Prince (or anyone else) was the originator of this commonly used engineering.
However in 1925 Prince did publish an article in the GE Review cited “The Inverter”. His article contains nearly all important elements required by modern inverters and is the earliest such publication to use that term in the open literature. Prince explained that an inverter is used to convert direct current into single or polyphase alternating current.
The article explains how: “the author took the rectifier circuit and inverted it, turning in direct current at one end and drawing out alternating current at the other”. Subsequent development of the inverter is discussed as are rectifier devices. In the case of this project ,the input DC voltage source will be a battery, which is being supplied by photovoltaic (pv)panels .
Such the DC voltage will likely be inconsistent , and consideration will need to be made in order to produce the desired output. The input is DC power. The value of input v voltage depends upon the application.
Some applications require 12 V while some may require very high voltages of thousands volts. The ideal output of an inverter is a sinusoidal waveform. Such a wave gives continuous flow of power. The conversion of DC power to AC power can be done using two approaches. Both do conversion in two steps.
In the first approach, a low voltage DC power is converted into high voltage DC power and then in the second step this high voltage DC power is converted to AC power.
Ducon F., (1982)
In the second approach, a low voltage DC power is converted to low voltage AC power and then this output is stepped up to high voltage AC power.
1.0 JUSTIFICATION
Electricity is the main source of power for our domestic consumption, industrial development, center of learning and medical centers. However power failure has resulted in people buying generators for their own daily activity. Other businesses are not functioning due to absence of constant power supply. These are the reasons to necessitating the designing of an inverter and other standby system that can deliver maximum output power to the load, with cheaper costs on the long run. Gupta J.B., (2009)
1.1 AIM AND OBJECTIVES
The aim of this project is to design and construct a circuit that will take a 24v DC input from battery and provide a 3000watt output that will be able to supply a standard three bedroom flat. The objectives are:
To design a circuit that will convert DC to AC power for various appliances used in domestic home.
To provide a noiseless sources of electricity generation.
To have a source of generating electricity that has no negative effect on the environment (i.e no greenhouse effect).
To provide a source of electricity power with low maintenance cost zero fuel cost.
1.2 AREA OF APPLICATION
This project can be used in various areas such as homes, business centers, school and other organization to provide an interrupted power supply.
Scope of the project
The scope of this project is to design an inverter with output power rating 3000watt, maximum output current of 22.72A, output voltage of 220V AC from a 24v DC input,
This project is basically designed for single phase domestic loads. The project is to be realized using simple and relatively cheap components available in the local market.
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