Design And Construction Of A 3.5kva Automatic Inverter Changeover

Project and Seminar Material For Electrical Electronics Engineering EEE

Design And Construction Of A 3.5kva Automatic Inverter Changeover


Abstract


This work is on change over selector switch for automatic toggling of an inverter when AC mains is present and vice versa and also the system must enable automatic switching of the battery charger such that when AC mains is present the inverter battery gets charged and when AC mains fails, the battery gets connected with the inverter for supplying AC to the load. The configuration should be such that everything takes place automatically and the appliances are never switched OFF, just reverted from inverter AC to Mains AC and vice versa during mains power failures and restorations.


Table of Contents


  • Cover Page
  • Title Page
  • Approval Page
  • Dedication
  • Acknowledgement
  • Abstract

Chapter One

1.0 Introduction

  • 1.1 Background of the Project
  • 1.2 Problem Statement
  • 1.3 Aims and Objectives
  • 1.4 Significance of the Project
  • 1.5 Scope of the Project
  • 1.6 Application of the Project

Chapter Two

2.1 Literature Review

  • 2.1 Description of a Relay
  • 2.2 History of Power Failure and System Reliability
  • 2.3 Types of Power Failure
  • 2.4 Protecting the Power System From Failure
  • 2.5 Restoring Power After a Wide-area Outage
  • 2.6 Power Failure Inevitability and Electric Sustainability
  • 2.7 Mitigation of Power Outage Frequency

Chapter Three

3.0 System Methodology

  • 3.1 Block Diagram of the System
  • 3.2 Circuit Description and Operation
  • 3.1 System Circuit Diagram

Chapter Four

4.0 Test and Result Analysis

  • 4.1 Construction Procedure
  • 4.2 Assembling of Sections
  • 4.3 Testing of System Operation
  • 4.4 Construction of the Casing
  • 4.5 Economic of the Project
  • 4.6 Project Viability
  • 4.7 Reliability
  • 4.8 Project Evaluation
  • 4.9 Testing, Troubleshooting and Remedy
  • 4.10 Trouble Shooting and Remedy

Chapter Five

5.0 Conclusion and Recommendation

  • 5.1 Conclusion
  • 5.2 Recommendation
  • References

Chapter One


1.0 Introduction

1.1 Background of the Study

This automatic inverter Changeover Switch is a device used to switch off a power supply and subsequently switch on another power supply. Basically it is aimed at switching on a more convenient power supply to the load. This work offers automatic toggling of an inverter when AC mains is present and vice versa and also the system must enable automatic switching of the battery charger such that when AC mains is present the inverter battery gets charged and when AC mains fails, the battery gets connected with the inverter for supplying AC to the load.

Since it switches on power to the load, precautions has to be taken while choosing the type of Change Over Switch, while selecting the appropriate size, the control of arcing has to be put into consideration.

A good switch should be the one whose contact is made in such a way as to limit the arc formation by having no contact-bounce and by having contacts made of good conductive, corrosion resistance and wear resistance materials.

A good change over switch must have adequate insulation and must be so constructed and located as not to constitute a potential hazard.

A good change over switch should also have tight contact points so as to limit or eliminate the possibility of partial contact at the contact point. The partial contact leads to over heating of the components and may lead to fire outbreak in the entire room.


1.2 Problem Statement

In the last decay, switching from mains supply to solar inverter and vice –versa is done manually, and this involves labour, wastes time and at the same time can expose the operator to risk of electric shock. However, this device was invented to solve this problem, it switches automatically between the mains supply and solar inverter when the need arise.


1.3 Aims and Objectives

Due to inconsistent supply of power, there is a growing need for an alternative source of power supply that is the major reason of having inverter. This has lead to heavy capital investment in a bid to suppress power failure and ensure regular power supply for the industry, hospitals, schools and homes. The problem of power failure can be checkmated with the use of stand-by inverter system.

If some of these big firm do not make provisions for stand-by power source, frustration could set in which may lead to the closure of business and thus throwing workers into unemployment. Also in the case of hospital, undergoing a surgical operation and power supply suddenly go off, the patient might loose his or her life due to the power outage.

In view of these considerations, this project is aimed at designing and constructing a workable automatic change over switch for an inverter which offers automatic toggling of an inverter when AC mains is present and vice versa and also the system must enable automatic switching of the battery charger such that when AC mains is present the inverter battery gets charged and when AC mains fails, the battery gets connected with the inverter for supplying AC to the load.


1.4 Significance of the Project

The automatic change over switch, the switch aimed at achieving the following automatic actions;

To change power over from inverter to mains supply and vice-versa and also to enable automatic switching of the battery charger such that when AC mains is present the inverter battery gets charged and when AC mains fails, the battery gets connected with the inverter for supplying AC to the load.

The automatic change over unit can be operated in single inverter has the following advantages;

  1. It minimizes damages to lives/equipment since it has its own monitoring system and its switching requires no human contact with the switch, thus eliminating human error.
  2. It reduces its change over timing to the minimum due to its fast response to power outage.
  3. It maintains high quality of service through its fast and prompt response.

Moreover, the size and captivity of the unit will depend upon the load for which it will be used. The unit is also portable, easy, convenient and safe to install.


1.5 Scope and Limitation of the Study

This work covers only a one phase automatic changeover which can only be used for providing a means of switching from inverter to AC mains and vice- versa in the case of failure in public utility.


1.6 Applications of the Project

  1. Apart from using this work in inverter, this circuit can also be used as a home lighting system with few modifications.
  2. It can be used to drive other DC loads like a DC motor of any electronic appliance or other toy applications.

Chapter Five


5.0 Conclusion and Recommendation

5.1 Conclusion

The automatic change over switch unlike most of its counter parts, has not only the ability to change over the switch from inverter to ac main and vice-versa

The circuitry is simple and reliable and the same time to repair the troubleshooting and maintain the extra cost was eliminated by redesigning the circuit which does not in any way alter the efficiency of the system.

With the interest of the growing mass in mind, we look forward to coming up with other designs to provide alleviation and conveniences in the human society.

An automatic power changeover switch has been designed and constructed. The prototype of the automatic power changeover switch worked according to the specification and quite satisfactorily. The device is quite cheap, reliable and easy to operate. Whenever there is power outage, it reduces stress for manpower changeover.


5.2 Recommendation

This project is designed to be used in homes and industries and wherever the need for an uninterruptible power supply. And should be used and maintain by a qualified personnel.


Project Material Download

5,000 5000

The Complete Material Will Be Sent to You in Just 2 Steps

Quick & Simple…


Step One Purchase

Make Payment (Through Transfer) of ₦5,000 to Any of the Account Below

Access Bank PlcAcc No: 0811003731
Samphina Academy
Current Account
Zenith BankAcc No: 1225513212
Samphina Academy
Current Account

Or CLICK HERE To Pay With Debit Card


FOR STUDENTS OUTSIDE NIGERIA
CLICK HERE To Purchase Material ($15)
FOR GHANIAN STUDENTS
Make Payment of 120 GHS to 0553978005 | Douglas Cloud Osabutey | MTN MoMo

Step Two Purchase

Send the Following Details on WhatsApp ( 08143831497) After Payment

  1. Payment Details

  2. TOPIC: Design And Construction Of A 3.5kva Automatic Inverter Changeover

The Complete Material Will Be Sent To You On WhatsApp After Receiving Your Details
T & C Apply


  Contact Our Help Desk


Need a Different Topic? Perform a Quick Search



List of Related Works

Click on Any Topic to Preview the Content

samphina.academy

Samphina Academy

Samphina Academy is an Online Educational Resource Center that is aimed at providing students with quality information and materials to aid them in succeeding in their academic pursuit.