FABRICATION OF 1.5KVA INVETER
CHAPTER ONE: INTRODUCTION
1.1 BACKGROUND OF THE STUDY
An inverter is an electronics device or circuitry that changes direct current (D.C) to Alternating current [AC]. The device makes used of an in–built automatic circuit to achieve a complete automation of the entire system. The input voltage, output voltage, frequency and overall power handling depend on the design of a specific device or circuitry. An inverter is very important element that cannot be neglected in this Country as it is deeply fasten into the fabric of the society for the obvious reason of inadequate power supply. It is an important element in homes to power household devices like electric bulbs, electric cooker, refrigerator, television set etc. It also finds applications in various places work/offices to power devices like air conditioners, computers etc.
In spite of constant repair and efforts put forward by the stake holders in electricity industry to ensure stable power supply, yet the power generation and distribution across the country is very bad, low and it very far from being enough.
However, power failure has resulted in people buying generators for their daily activities. Businesses are not functioning due to failure of power supply. These are the reason that make necessary of designing and construction of inverter and other standby system that can deliver maximum output power to the load. Statistics have shown that the number of business that have been closed down simply because of power failure, cannot be over emphasized, so mankind need inverter seriously in other to restore technology development, business and medical controls. However, the background of the study lies within the reason why the construction of inverter should be forwarded the factor that increases the quality of inverter marketability.
Finally, the success of this study will beneficial to the society. Mass production of inverters will lead to improve standard of living of the people and the nation will move forward in its pursuit of technology development.
1.2 STATEMENT OF THE PROBLEM
Faced with the problem of load power supply from supply authorities, noise pollution, air pollution, cost of the popular alternative, generator sets, there is need for a less noisy, pollution free and cheap solution to power problem. Then, this project is to provides a back-up and power by 220v A.C input and change to D.C sources to charge a 12v battery and change back to AC source with a reliable power supply of 1500VA output to power a standard house/offices.
1.3 AIM AND OBJECTIVE
The aim of this project is to construct a 1.5KVA inverter with an inbuilt charging system that take a 220V input that will be charged through solar panels or when there is supply from mains and change to D.C and later change back to A.C with the operation of inverter with output of 15000VA to power a standard office/house.
The objectives are:
1. To take load assessment of the required offices and construct an inverter that will be able to power them
2. To provide a source of electricity power with low maintenance cost and zero fuel cost
3. To construct an alarm circuit that beeps when the load on the inverter is beyond the inverter capacity.
1.4 METHODOLOGY
1. To study the previous work on the project so as to improve its efficiency.
2. Draw a block diagram.
3. Study of various components of charge controller and inverter circuit.
4. Constructs an inverter circuit using discrete components
1.5 SCOPE OF THE PROJECT
The scope of this project based on the construction of a 1.5KVA inverter and its operation, ;with the output power rating of 1.5KVA and maximum 7.27A and output voltage of 220V AC sources from a 12v inbuilt battery. This project is basically designed for single phase domestic loads.
1.6 MOTIVATION
With the obvious advantages of the inverter being a cheaper (in the long term) and cleaner source of energy, it is a device that can power essential loads. In the absence of supply power from utilities in the country, inverter is the best when it comes to back-up since they can come up very fast and they generate little or no noise unlike generators. Even in an area with constant power supply, power outage due to natural cause and fault are usually unannounced. It therefore very important to prevent causality and loss of good will by having a reliable back-up power installed.
1.7 LIMITATION OF THE PROJECT
The major limitation of this project is that it cannot operate equipment or an electronic device that is above its rated current. Also the used of bulky transformer instead of copper transformer which is lighter and smaller in size but more expensive is another limitation.
CHAPTER TWO: LITERATURE REVIEW
2.1 REVIEW OF FUNDAMENTAL CONCEPT
An enabling technology, power electronics does it job with intelligence, precision and efficiency. It used the smartness of advanced control technology with the efficient conversion of electric power into the precise from required to control a function or process. In industrial and commercial products, it is gaining ground mostly visible among inverters which converts direct current (DC) into a single or poly phase AC voltage at a desire aptitude and frequency whose power rating now runs from 1000W, 20MW and more.
The operation of certain devices such as sensitive electronic equipment used for data processing, communications and control functions requires continuous and disturbance free AC power. Inversion is the process by which an AC voltage or current or both is being produced from DC source and AC source. Both processors are affected in a similar way i.e. by means of periodic communication, or switching of the supply to be transferred in such a manner that the desired type of output result. The generation of electric power involves various sources power evolving from some primary energy sources such as:
1. Conversion of electromagnetic radiation in a photo voltage cell
2. A rotating generator
3. Conversion of chemical energy in a fuel, cell or a battery
4. Conversion of kinetic energy by the magnetic hydro dynamic process.
Date: 2026-08-06 00:00:00.000000