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Notes for an Introductory Course On Electrical Machines and Drives free pdf download
Rajan Sharma

Notes for an Introductory Course On Electrical Machines and Drives free pdf download

Rajan Sharma | 19-Feb-2016 |
Magnetics , Three Phase Circuits and Power , TRANSFORMERS , Concepts of Electrical Machines , Threephase Windings , Induction Machines , Synchronous Machines and Drives , Line Controlled Rectifiers , Inverters , DCDC Conversion ,

Hi friends, here Rajan Sharma uploaded notes for Electrical Drives with title Notes for an Introductory Course On Electrical Machines and Drives free pdf download. You can download this lecture notes, ebook by clicking on the below file name or icon.

1 Three Phase Circuits and Power 1
1.1 Electric Power with steady state sinusoidal quantities 1
1.2 Solving 1phase
problems 5
1.3 Threephase
Balanced Systems 6
1.4 Calculations in threephase
systems 9
2 Magnetics 15
2.1 Introduction 15
2.2 The Governing Equations 15
2.3 Saturation and Hysteresis 19
2.4 Permanent Magnets 21
2.5 Faraday’s Law 22
2.6 Eddy Currents and Eddy Current Losses 25
2.7 Torque and Force 27
3 Transformers 29
3.1 Description 29
3.2 The Ideal Transformer 30
3.3 Equivalent Circuit 32
3.4 Losses and Ratings 36
3.5 Perunit
System 37
v
vi CONTENTS
3.6 Transformer tests 40
3.6.1 Open Circuit Test 41
3.6.2 Short Circuit Test 41
3.7 Threephase
Transformers 43
3.8 Autotransformers 44
4 Concepts of Electrical Machines; DC motors 47
4.1 Geometry, Fields, Voltages, and Currents 47
5 Threephase
Windings 53
5.1 Current Space Vectors 53
5.2 Stator Windings and Resulting Flux Density 55
5.2.1 Balanced, Symmetric Threephase
Currents 58
5.3 Phasors and space vectors 58
5.4 Magnetizing current, Flux and Voltage 60
6 Induction Machines 63
6.1 Description 63
6.2 Concept of Operation 64
6.3 Torque Development 66
6.4 Operation of the Induction Machine near Synchronous Speed 67
6.5 Leakage Inductances and their Effects 71
6.6 Operating characteristics 72
6.7 Starting of Induction Motors 75
6.8 Multiple pole pairs 76
7 Synchronous Machines and Drives 81
7.1 Design and Principle of Operation 81
7.1.1 Wound Rotor Carrying DC 81
7.1.2 Permanent Magnet Rotor 82
7.2 Equivalent Circuit 82
7.3 Operation of the Machine Connected to a Bus of Constant Voltage
and Frequency 84
7.4 Operation from a Source of Variable Frequency and Voltage 88
7.5 Controllers for PMAC Machines 94
7.6 Brushless DC Machines 95
8 Line Controlled Rectifiers 99
8.1 1and
3Phase
circuits with diodes 99
8.2 One Phase
Full Wave Rectifier 100
8.3 Threephase
Diode Rectifiers 102
8.4 Controlled rectifiers with Thyristors 103
CONTENTS vii
8.5 One phase Controlled Rectifiers 104
8.5.1 Inverter Mode 104
8.6 ThreePhase
Controlled Converters 106
8.7 *Notes 107
9 Inverters 109
9.1 1phase
Inverter 109
9.2 Threephase
Inverters 111
10 DCDC
Conversion 117
10.1 StepDown
or Buck Converters 117
10.2 Stepup
or Boost Converter 119
10.3 Buckboost
Converter 122

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