This is a full project materials on Conditioning Studies And Provision Of 1.5kva Pure Sine Wave Inverter To Classes Rooms
ABSTRACT
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Conditioning study and provision of 1.5KVA inverter will enable to us have a backup in case the existing inverter which is 3.5KVA fails or failure experience from the national gris as the case may be. The needs for this project cannot be overemphasis due to its local and commercial purpose of conversion of D.C to A.C voltage for utilization. Sensitivity of some of the laboratory equipments and at late hours the walkway is dark which is not convenient for evening student, with the backup inverter. It can accommodate the load on the extension, various tests were conducted for performance evaluation and the results have shown good performance.
TABLE OF CONTENTS
Contents
Title Page
Declaration
Approval Page
Dedication
Acknowledgements
Table of Content
List of Tables
List of Figures
Abstract
CHAPTER ONE: INTRODUCTION
1.1 Background of the Report
1.2 Aims and Objectives
1.3 Problem Statement
1.4 System Description and Principle of Operation
1.5 Scope of the Study
CHAPTER TWO: LITERATURE REVIEW
2.1 Literature Review
2.2 Review of Related Work
2.3 Present Research Work
2.4 Comparative Analysis
2.5 Advantage of this Project
2.6 Conclusion
CHAPTER THREE: DESIGN METHODOLOGY
3.1 Introduction
3.2 Design Specification
3.3 Design Assumption
3.4 Design Analysis
3.4.1 Design of Power Unit
3.4.2 Sizing of Photovoltaic Array
3.4.3 Determination of Battery Size
3.4.4 Charge Controller
3.4.5 Inverter Size
3.4.6 Cable Sizing
CHAPTER FOUR: CONSTRUCTION AND PACKAGING
4.1 Introduction
4.2 Installation
4.3 Packaging
CHAPTER FIVE: TESTING AND RESULT
5.1 Introduction
5.2 Testing
5.2.1 Performance of the Photovoltaic Panels
5.3 Result
5.4 Conclusions
CHAPTER SIX: CONCLUSION AND RECOMMENDATIONS
6.1 Conclusion
6.2 Recommendations
References
Appendix
CHAPTER ONE
INTRODUCTION
1.1 Background of the Report
This report focuses on DC to AC power inverters, which aim to efficiently transform a DC power source to a high voltage AC source, similar to power that would be available at an electrical wall outlet. Inverters are used for many applications, as in situations where low voltage DC sources such as batteries, solar panels or fuel cells must be converted so that devices can run off of AC power. One example of such a situation would be converting electrical power from a car battery to run a laptop, TV or cell phone.
The method, in which the low voltage DC power is inverted, is completed in two steps. The first being the conversion of the low voltage DC power to a high voltage DC source, and the second step being the conversion of the high DC source to an AC waveform using pulse width modulation. Another method to complete the desired outcome would be to first convert the low voltage DC power to AC, and then use a transformer to boost the voltage to 120 volts.
This project focused on the first method described and specifically the transformation of a high voltage DC source into an AC output.
The different DC AC inverters on the market today there are essentially two different forms of AC output generated: modified sine wave, and pure sine wave1. A modified sine wave can be seen as more of a square wave than a sine wave; it passes the high DC voltage for specified amounts of time so that the average power and rms voltage are the same as if it were a sine wave. These types of inverters are much cheaper than pure sine wave inverters and therefore are attractive alternatives.
Pure sine wave inverters, on the other hand, produce a sine wave output identical to the power coming out of an electrical outlet. These devices are able to run more sensitive devices that a modified sine wave may cause damage to such as: laser printers, laptop computers, power tools, digital clocks and medical equipment. This form of AC power also reduces audible noise in devices such as fluorescent.
Lights and runs inductive loads, like motors, faster and quieter due to the low harmonic distortion.
1.2 Statement of the Problem
In the market of power inverters, there are many choices. They range from the very expensive to the very inexpensive, with varying degrees of quality, efficiency, and power output capability along the way. High quality combined with high efficiency exists, though it is often at a high monetary cost. For example, Samlex America manufactures a 600 W, pure sine wave inverter; the cost is $2892.
Meanwhile Go Power manufactures a 600 W inverter with a modified sine wave output (closer to a square wave), this model only fetches $693. The high end pure sine wave inverters tend to incorporate very expensive, high power capable digital components. The modified sine wave units can be very efficient, as there is not much processing being performed on the output waveform, but this results in a waveform with a high number of harmonics, which can affect sensitive equipment such as medical monitors. Many of the very cheap devices output a square wave, perhaps a slightly modified square wave, with the proper rms Voltage, and close to the right frequency.
Our goal is to fill a niche which seems to be lacking in the power inverters market, one for a fairly efficient, inexpensive inverter with a pure sine wave output. Utilizing PWM and analog components, the output will be a clean sinusoid, with very little switching noise, combined with the inexpensive manufacturing that comes with an analog approach.
1.3 Purpose of the Project
The objective of this project is the conditioning studies and provision of 1.5KVA pure sine wave in the EEED classes. The objectives are stated below
- To provide constant power supply in the department
- To convert electrical energy of DC form into that of AC
- To provide power during power outage from PHCN
- To enable all the activities to be carryout in the department whenever PHCN fails to offer supply.
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