Design And Construction 5Kva Motor Soft Starter With Phase Failure And Sequence Protection

This paper describes a student project that studies the design of a Soft-Starter for three phase Alternating Current (AC) Induction Motor using arduino. Starting a large motor that utilizes an AC Converter will eliminate the need to draw a large amount of current during the transient period, thereby insuring that starting a large motor will not disturb adjacent power lines.

A smooth and soft starter is employed in a three phase induction motor to eliminate the surge in current and electromagnetic torque during starting. The surge in current and torque are eliminated temporarily using soft started at the time of starting. This in turn reduces the stress applied on an electric motor and shaft attached with rotor. The soft starter also eliminates the unwanted effects in electric cables and power distribution network. This paper provides a detailed description of soft and smooth start to an induction motor. At the time of starting, an induction motor draws significant amount of current from the supply and this drawn current is higher than the rated current of three phase induction motor. The motor reaches the full rated speed instantaneously as soon as the voltage is applied. The smooth start of three phase induction motor is based on the delay angle of TRIAC circuit. The firing angle is delayed during starting and delay angle reduces as the motor picks up the speed. The firing delay angle is further reduced to zero when motor reaches full speed. This proposed technique provided reduced voltage at the time of starting and full rated voltage when motor reaches full speed. Due to proposed technique, motor starts at a slow speed and gradually increases to full rated speed. By using soft starters, performance of induction motor is improved and it also improves load torque characteristics.

COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
ABBREVIATION

CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
1.2 PROBLEM STATEMENT
1.3 AIM AND OBJECTIVE OF THE STUDY
1.4 ADVANTAGES OF SOFT STARTER
1.5 DISADVANTAGES OF SOFT MOTOR STARTER
1.6 APPLICATIONS OF SOFT STARTER
1.7 LIMITATION OF THE STUDY
1.8 SCOPE OF THE STUDY

CHAPTER TWO
LITERATURE REVIEW
2.1 REVIEW OF THE STUDY
2.2 DESCRIPTION OF AN AC INDUCTION MOTOR
2.3 REVIEW OF OPERATING PRINCIPLES OF AN AC INDUCTION MOTOR
2.4 HISTORICAL BACKGROUND OF AN AC INDUCTION MOTOR
2.5 REVIEW OF RELATED STUDIES
2.6 REVIEW OF DIFFERENT TYPES AC MOTOR CONTROL

CHAPTER THREE
3.0 METHODOLOGY
3.1 SYSTEM BLOCK DIAGRAM
3.2 SYSTEM CIRCUIT DIAGRAM
3.3 SOFT STARTER CIRCUIT DESCRIPTION

CHAPTER FOUR
4.1 INSTALLATION OF THE COMPLETED DESIGN
4.2 CONSTRUCTION PROCEDURE AND TESTING
4.3 CASING AND PACKAGING
4.4 ASSEMBLING OF SECTIONS
4.5 TESTING OF SYSTEM OPERATION

CHAPTER FIVE
5.1 CONCLUSION
5.2 RECOMMENDATION
5.3 REFERENCES

• Design And Construction Of A Single Phase Auto-Transform Of Rating IKVA, 240V/110, 80 12V, 6V
• Design And Construction Of Control System For Direct-On-Line Starting Of Induction Machine
• Construction And Design Of 12 Volt Car Battery Charger Circuit With Phone Charging USB Port
• Design And Construction Of A Power Supply Restoration Alarm With 555 Timer, Buzzer And Led
• Design And Construction Of An FM Radio Receiver
• Design And Construction Of A Microcontroller Based Security System With Intruder Position Display
• Design And Construction Of A 220 / 12 Volts Single Phase Step Down Transformer

• Electrical Electronics Engineering Project Topics and Materials