Design and Construction of a Power Inverter

ABSTRACT Power inverter is an electrical appliance that can be used with DC battery as an alternativesource of energy supply in the event of power failures and energy crisis. It is cheap, clean,very conducive and silent when in operation and a very reliable source of power supply as togenerator. Modern research and technologies have shown that inverter is one of the cheapestforms of energy generation. Throughout the world, it is readily available and can be partnerto solar energy particularly using  photo-voltaic cells (PVC) or  solar panel arrays, with abattery   bank   as   a   reservoir   to   collect   and   store   solar   energy   in   large   scale   powergeneration/production for rural and very remote areas’ electrification project in the Nation.Sine   wave,   modified   sine   wave,   square   wave,   cotek   and   power   master   fromhttp://www.inverter.htmlMost domestic appliances such as personal computers, television sets and lighting systemsamong others, operation has largely been controlled by hydro-electric power supply [NationalGrid]. This is not much a reliable source of energy due to the persistent power failure fromour only reliable Nation Grid in the country, which has been the result of low water level inthe   dam(s)  during   hamatan   seasons,  faulty   underground   cables   and   transformer   failures.Especially, the 1997, 2006, 2007 and the 2015 the current energy crisis that is happening inGhana and such experiences are seriously estimated worldwide in the near forthcoming as aresult of unfavourable climatic change.This development therefore seeks to use inverter with the help of 12V DC battery as analternative   source   of   energy   in   the   wake   up   of   these   challenges   to   power   householdappliances.                                                 
TABLE OF CONTENTS Abstract ……………………………………………………………………………….... Table of content………………………………………………………………………... Acknowledgement …………………………………………………………………..… List of Abbreviation ……………………………………………………………….…... CHAPTER ONE …………………………………………………………………  INTRODUCTION TO DC/AC POWER INVERTER 1.1 Introduction                                                                                            1.2 Problem statement                                                                              1.3 Aims of the study                                                      1.4 Objective of the study                                               1.5 Significance/importance of the study                        1.6 Limitation/scope of the study   1.7 Tools and components used for the construction                                                                 CHAPTER TWO……………………………………………………………………. LITERATURE REVIEW ON A DC/AC POWER INVERTER 2.1 Background                                                                        2.2 Inverter and Application                                                                2.3Methodology                                                                                                                         2.3.1Block diagram of an inverter                                                       2.4 Sine wave generator                                                                                           CHAPTER THREE…………………………………………………………                               Methodology3.1 Introduction 3.2 Components of a DC – AC Power Inverter3.2.1 Multivibrator 3.2.2A stable multivibrator 3.2.3 Light Emitting Diode 3.2.4 Resistors 3.2.5 Capacitors3.2.6 NPN- Transistor 3.2.7 Circuit or Breadboard 3.2.8 Transformer3.2.9 Diode 3.3 Construction and connection of a DC-AC Power Inverter. 3.4 The 12V DC BatteryCHAPTER FOUR………………………………………………………………22-25 MODE OF OPERATION, SERVICING AND ANALYSIS 4.1 Circuit operation 4.2 Switching Times 4.3 Switching time against Output voltage 4.4 Servicing CHAPTER FIVE………………………………………………………………… CONCLUSIONS AND RECOMMENDATIONS 5.1Conclusions 5.2 RecommendationsREFERENCE…………………………………………………………………