Speed Control of Sensorless Brushless DC Motor: brushless dc

Speed Control of Sensorless Brushless DC Motor: brushless dc motor controller,permanent magnet dc motor,large dc motors,brushless electric motor,brushless dc motor,dc motors

This book is all about running a brushless DC motor using a sensorless technique. The target of the work was to make a very simple operating method for a brushless motor and formulate a speed control mechanism. Initially the work was started with both considering back-EMF and without considering back-EMF. Because of more complexity in the back-EMF sensing method, and as our intention was to make a simpler and cost effective operation, so finally we assembled our project the without back-EMF sensing. Even though being a simple and inexpensive machine, the performance was quite good. However adding back-EMF sensing in this machine can give it more dependability.

TABLE OF CONTENTS:
DECLARATION I
APPROVAL II
ACKNOWLEDGEMENT III
LIST OF FIGURES VII
ABSTRACT IX

CHAPTER 1
INTRODUCTION 10
1.1.Introduction 10
1.2.Historical Background 0
1.3.Advantage over Traditional Method 11
1.4.Objective of this Work 12
1.4.1.Primary objectives 12
1.4.2.Secondary Objectives 12
1.5.Introduction to this Thesis 12

CHAPTER 2
BRUSHLESS DC MOTOR 14
2.1.Introduction 14
2.2.Comparison of Brushless motor with brushed motors 15
2.3.Structure of a BLDC 15
2.3.1.Stator 16
2.3.2.Rotor 17
2.4.Operating Principle 18
2.4.1.Sensored Commutation 19
2.4.2.Conventional Control Method Using Hall-effect Sensors 20
2.4.3.Sensorless Control 22
2.5.Applications 23
2.6.Summary 24

CHAPTER 3
MOTOR DRIVE SYSTEMS 25
3.1.Introduction 25
3.2.Components of Drive Electronics 25
3.3.Inverter 26
3.3.1.Three-Phase Inverter 26
3.3.1.1.120-Degree Conduction 27
3.3.1.2.180-Degree Conduction 29
3.4.Speed Control Techniques 30
3.4.1.Open Loop Speed Control 31
3.4.2.Closed Loop Speed Control 31
3.4.2.1.Proportional-Integral (PI) Controller 32
3.5.PWM based Methods 33
3.5.1.Conventional 120° PWM technique 33
3.5.2.PWM Duty Cycle Calculation 33
3.6.Summary 34

CHAPTER 4
SIMULATION 35
4.1.Introduction 35
4.2.Simulation 35
4.2.1.Simulating Three-Phase Inverter 36
4.2.2.Simulating Controller Unit 38
4.3.Simulation Results 39
4.3.1.Speed Control 40
4.4.Summary 40

CHAPTER 5
HARDWARE IMPLEMENTATION 41
5.1.Introduction 41
5.2.Equipments and Components 42
5.3.Power Supply Unit 43
5.4.Microcontroller Unit 44
5.5.Motor Drive Unit 45
5.6.Performance of the System 46
5.7.Summary 47

CHAPTER 6
DISCUSSIONS AND CONCLUSIONS 48
6.1.Discussions 48
6.2.Suggestion for future Work 49
6.2.1.Limitations 49
6.2.2.Future Scope 49
6.3.Conclusions 50

REFERENCES 51
APPENDIX A 53
SPEED CONTROL FLOWCHART 53
APPENDIX B 54
MICROCONTROLLER CODES 54
APPENDIX C 55
ATMEGA32 (MICROCONTROLLER) 55
6.3.1.Pin Descriptions 55
6.3.2.Block Diagram 58
6.3.3.Electrical Characteristics 59
APPENDIX D 60
L298 (DUAL FULL-BRIDGE DRIVER) 60
6.3.4.Pin Configurations 60
6.3.5.Maximum Ratings 61
Country USA
Manufacturer MD SABBIR AHMED
Binding Kindle Edition
ReleaseDate 2018-11-19
Format Kindle eBook

Country	USA
Manufacturer	MD SABBIR AHMED
Binding	Kindle Edition
ReleaseDate	2018-11-19
Format	Kindle eBook

Speed Control of Sensorless Brushless DC Motor: brushless dc motor controller,permanent magnet dc motor,large dc motors,brushless electric motor,brushless dc motor,dc motors

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