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TITLE PAGE

DESIGN AND CONSTRUCTION OF A SINGLE PHASE POWER SUPPLY FOR A THREE PHASE INDUCTION MOTOR

 

BY

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EE/H2013/01430
DEPARTMENT OF ---
INSTITUTE OF ---

DECEMBER,2018

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APPROVAL PAGE

This is to certify that the research work, "design and construction of a single phase power supply for a three phase induction motor" by ---, Reg. No. EE/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on Electrical and Electronics Engineering has been approved.

By
Dr. ---                                           Dr. ---
Supervisor                                                  Head of Department.
Signature……………….                           Signature……………….        

……………………………….
Dr. ---
External Invigilator

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DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.

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ACKNOWLEDGEMENT

The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.

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PROJECT DESCRIPTION: This work “design and construction of a single phase power supply for a three phase induction motor” research material is a complete and well researched project material strictly for academic purposes, which has been approved by different Lecturers from different higher institutions. We made Preliminary pages, Abstract and Chapter one of “design and construction of a single phase power supply for a three phase induction motor” visible for everyone, then the complete material on “design and construction of a single phase power supply for a three phase induction motor” is to be ordered for. Happy viewing!!!

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These 3 phase motor is supplied with 3 three-phase AC supply and is widely used in ships for heavier loads. This research is purposed to established a new method is simple and good to operate the three phase induction motor on single phase power by using capacitor. The object used in this research was three phase induction motor that has the standard of 2 HP, 440 volt, Wye connection, 2 Pole, 50 Hz, 3000 RPM, 3.08 Amp. The result of this research showed that the method could work well to control the motor to operate properly to load 85% of the full load. In general the motor has better performance when operating on single phase power system in all load cases (low at high load). The motor could operate with power factor close to unity, higher speed and better efficiency. The motor operated with higher current harmonic distortion with low loads but lower current harmonic distortion at high loads. There for it is very good to operate the motor at high load up to 85% of its full load.

 

 

TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
1.0      INTRODUCTION
1.1      BACKGROUND OF THE PROJECT

1. PROBLEM STATEMENT
2. AIM OF THE PROJECT
3. OBJECTIVE OF THE PROJECT
4. PURPOSE OF THE PROJECT
5. SIGNIFICANCE OF THE PROJECT
6. APPLICATION OF THE PROJECT
7. LIMITATION OF THE PROJECT

CHAPTER TWO
LITERATURE REVIEW

1. OVERVIEW OF INDUCTION MOTOR
2. HISTORICAL BACKGROUND OF INDUCTION MOTOR
3. THREE PHASE INDUCTION MOTOR CONSTRUCTIONAL REVIEW

CHAPTER THREE

1.     METHODOLOGY
1. DESIGN OF INDUCTION MOTOR
2. CAPACITOR CIRCUIT TO THE COIL
3. SELECTION OF CAPACITOR

CHAPTER FOUR

1. EXPERIMENTAL RESULT
2. APPLICATION OF 3 PHASE INDUCTION MOTOR
3. ADVANTAGES OF INDUCTION MOTOR
4. DISADVANTAGES OF 3 PHASE INDUCTION MOTOR
5. PROBLEMS IN 3 PHASE INDUCTION MOTOR
6. PROTECTIONS FOR 3 PHASE INDUCTION MOTOR

CHAPTER FIVE

1. CONCLUSION
2. REFERENCES

 

CHAPTER ONE
1.0                                                        INTRODUCTION
1.1                                         BACKGROUND OF THE PROJECT
An induction motor or asynchronous motor is an AC motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
These 3 phase motor is supplied with 3 three-phase AC supply and is widely used in ships for heavier loads. 3 phase induction motors are of two types, squirrel cage and slip ring motors. Squirrel cage motors are widely used on ships due to their rugged construction and simple design. Induction motors are used in almost all machinery system of the ship such as crane motor, propulsion motor, blower motor, sea water pump motor, and even small synchronous motor.
The three phase induction motor has three coils identities are separated from each other across 1200 electricity that powered by Three phase power system. They will produce resultant magnetic flux that rotates like poles actual magnets spinning mechanism. RMS voltage developed in coils of motor is shown in below fig-1.

If the starting torque is not enough, it can be improved by adding a motor star capacitor with a capacitance value of approximately two times the pointed. This capacitor must be evaluated after having carried out test of real application test. The three phase motor can operate in single phase power supply with the help of permanent CAPACITOR. This small thing (capacitor) very helpful to make three phase motor running on single phase power supply.
Normally three phase induction motor operates on three phase power system, to improve the starting torque of the motors; they can operate on a single phase supply which is the aim of this work.

1.2                                                  PROBLEM STATEMENT
There are two different types of supply in induction motor which is according to the electrical design, in induction we have single phase induction motor and three phase induction motor. Single phase induction motor are designed to be operated on a single phase power supply while a three phase power supply are designed to be operated on a three phase power supply. Now, I challenge is that these machine power supply cannot be interchanged, that using three phase in a single phase power supply and vice versa. This has been a challenge for a very long time, that people of now finding difficult to purchase the type of motor they wanted due to the kind of supply they were made for due and due to the fact that is not everywhere that three phase supply are been used. In other to solve this problem this study was introduced which deals with a method of using a single phase supply to power the three phase induction motor.

1.3                                                   AIM OF THE PROJECT
The aim of this work is to establish a new, simple and good method is to operate the three phase induction motor on single phase power by using capacitor.

1.4                                            OBJECTIVES OF THE PROJECT
At the end of this work the student involved shall be able to:

1. Understand the working principle of three phase induction motor
2. Study the constructional principle of three phase induction motor
3. Use single phase power supply to power a three phase induction motor.

1.5                                              PURPOSE OF THE PROJECT
The main purpose of this work is to provide a cheap and easy way of powering a three phase induction motor

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1.6                                         SIGNIFICANCE OF THE PROJECT
With this study, people are now finding it easier to use an induction motor anywhere and anytime without considering the type of supply for the induction motor because it provide consumers a cheap, easy and simple way of using three phase induction motor.

1.7                                          APPLICATION OF THE PROJECT
This study is very useful to both producers and consumers of the three phase induction motor. To producer, it increases their production rate while to consumers, it give them the opportunity to operate the machine without the fear of getting burnt by the power supply.

1.8                                           LIMITATION OF THE PROJECT

1. The problem with this work is that the user has to dismantle the machine before making the connection.
2. It requires some level of professionalism.
3. The selection of the rating of the capacitor to use is also a problem.

1.9                                                   RESEARCH QUESTION

1. Will a 3 phase motor run on single phase?
2. What is the difference between 1 phase and 3 phase?
3. What is the advantage of using a three phase and a single phase motor?

CHAPTER TWO: The complete chapter two of “design and construction of a single phase power supply for a three phase induction motor” is available. Order full work to download. Chapter two of “design and construction of a single phase power supply for a three phase induction motor” consists of the literature review. In this chapter all the related work on “design and construction of a single phase power supply for a three phase induction motor” was reviewed.

CHAPTER THREE: The complete chapter three of “design and construction of a single phase power supply for a three phase induction motor” is available. Order full work to download. Chapter three of “design and construction of a single phase power supply for a three phase induction motor” consists of the methodology. In this chapter all the method used in carrying out this work was discussed.

CHAPTER FOUR: The complete chapter four of “design and construction of a single phase power supply for a three phase induction motor” is available. Order full work to download. Chapter four of “design and construction of a single phase power supply for a three phase induction motor” consists of all the test conducted during the work and the result gotten after the whole work

CHAPTER FIVE: The complete chapter five of “design and construction of a single phase power supply for a three phase induction motor” is available. Order full work to download. Chapter five of “design and construction of a single phase power supply for a three phase induction motor” consist of conclusion, recommendation and references.

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