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Tables of Contents for Variable Speed Drive Fundamentals
Chapter/Section Title
Page #
Page Count
List of Illustrations
ix
Foreword
xiii
Introduction
1
2
Variable Speed Drive Basics
3
12
Mechanical Drives
4
1
Hydraulic Drives
5
1
Eddy Current Coupling
6
1
Rotating DC Drives
7
2
Solid State Systems
9
1
Braking
10
1
Definitions
11
4
DC Motors and Drives
15
16
The DC Motor
15
1
Speed Regulation
16
1
Torque
17
2
Control Systems
19
1
Solid State Control
19
1
Control Configurations
19
3
Braking
22
1
Ripple Factor
23
2
Motor Maintenance Tips
25
6
AC Motors and Drives
31
20
Induction Motors
31
3
How Does the Motor Work?
34
2
Current and Torque Relationships
35
1
Control Methods for Induction Motors
36
15
Full Voltage Starter
36
2
Reduced Voltage Starters
38
2
Solid State Motor Controller
40
2
Smart Motor Controller
42
2
Multi-speed Motors
44
1
Synchronous Motors
45
2
Synduction Motors
47
1
Wound-rotor Motors
47
4
Motor Response to Variable Frequency
51
20
Volts-per-Hertz
54
1
Constant Volts Range
55
2
Characteristics of Variable Speed Drives
57
8
Variable Voltage Input
60
1
Current Source Inverter
61
2
Pulse Width Modulation
63
2
Scaler vs Vector Control
65
6
Harmonics
71
6
PWM Drive Parameters
77
16
Starting the Drive
78
1
Stopping the Drive
79
1
Reversing the Drive
79
1
Running Conditions
80
2
Parameters
82
11
Maintenance of Pulse Width Modulated Drives
93
14
Components
93
3
Generic Faults and Procedures
96
11
Basics of Applying Drives
107
10
Basic Relationships
107
4
Replace DC Drive with AC System
111
6
Application Notes
117
10
Define Machine Loads
117
1
Peak Load
118
1
AC or DC Drive?
118
1
Define the Machine
118
9
Heat and Enclosures
127
10
Defining Heat
128
1
Temperature Calculations
128
1
Heat Transfer Methods
129
1
Examples
130
7
Energy Saving Opportunities Applying Motors and Variable Speed Drives
137
24
Increasing Motor Efficiencies
137
2
Other Energy Saving Opportunities
139
4
Saving Energy with AC Inverters
143
5
Payback
148
2
Energy Auditing
150
3
Useful Motor Calculations
153
1
Applications
154
7
Case Histories
161
16
A Controlled Atmosphere Cold Storage Room
161
3
Converting DC to AC Drives in a Pulp Washing Application
164
4
A Utility-Subsidized Project
168
2
Irrigation Controls
170
1
Plating Facility Retrofit
171
6
Conclusion
177
6
Application: Breakaway, Acceleration, Peak Running Torques
178
5
Appendix A Glossary
183
8
Appendix B Formulas
191
8
Appendix C Product Summary
199
8
Appendix D Software
207
2
Index
209