Direct Torque Control with Space Vector Modulation (DTC-SVM) of ...

Contents
Table of Contents
Chapter 1 1
INTRODUCTION
Chapter 2 8
MODELING AND CONTROL MODES OF PM SYNCHRONOUS DRIVES
2.1 Mathematical model of PM synchronous motor 8
2.1.1 Voltage and flux-current equations 9
2.1.2 Instantaneous power and electromagnetic torque 17
2.1.3 Mechanical motion equation 22
2.2 Static characteristic under different control modes 25
2.3 Summary 33
Chapter 3 34
VOLTAGE SOURCE PWM INVERTER FOR PMSM SUPPLY
3.1 Introduction 34
3.2 Voltage source inverter (VSI) 35
3.3 Space vector based pulse width modulation (PWM) methods 46
3.4 Summary 52
Chapter 4 53
CONTROL METHODS OF PM SYNCHRONOUS MOTOR
4.1 Introduction 53
4.2 Field oriented control (FOC) 54
4.3 Direct torque control (DTC) 57
4.4 Summary 64
Chapter 5 65
DIRECT TORQUE CONTROL WITH SPACE VECTOR MODULATION
(DTC-SVM)
5.1 Introduction 65
5.2 Cascade structure of DTC–SVM scheme 66
5.2.1 Digital flux control loop 68
5.2.2 Digital torque control loop 82
5.3 Parallel structure of DTC–SVM scheme 91
5.3.1 Digital flux control loop 92
5.3.2 Digital torque control loop 102
5.4 Speed control loop for DTC–SVM structure control 113
5.5 Summary 122
Chapter 6 121
DIRECT TORQUE CONTROL WITH SPACE VECTOR MODULATION (DTC-
SVM) OF PMSM DRIVE WITHOUT MOTION SENSOR
6.1 Introduction 121
6.2 Initial rotor position estimation method 123
6.3 Stator flux estimation methods 127
6.3.1 Overview 127
6.3.2 Current model based flux estimator 127
6.3.3 Voltage model based flux estimator with ideal integrator 128