Contents
Electric Motor Control provides beginning students with a practical
approach to motor control. The textbook discusses electrical and mechanical
components and how they are connected to control different types of motors.
Many different types of control circuit and illustrations are discussed. The text
contains a wealth of practical information that will apply to almost any industrial application.
Preface
Section 1 Introduction
UNIT 1 General Principles of Electric Motor Control
UNIT 2 Fractional and Integral Horsepower Manual Motor Starters
UNIT 3 Magnetic Line Voltage Starters
Section 2 Circuit Layout, Connections, and Symbols
UNIT 4 Symbols
UNIT 5 Interpretation and Application of Simple Wiring
and Elementary Diagrams
Section 3 Control Pilot Devices
UNIT 6 Push Buttons and Control Stations
UNIT 7 Relays
UNIT 8 Contactors
UNIT 9 Timing Relays
UNIT 10 Pressure Switches and Regulators
UNIT 11 Float Switches
UNIT 12 Flow Switches
UNIT 13 Limit Switches and Proximity Control
UNIT 14 Phase Failure Relays
UNIT 15 Solenoid Valves
UNIT 16 Temperature Switches
Section 4 Basic Control Circuits
UNIT 17 Two-Wire Controls
UNIT 18 Three-Wire and Separate Controls
UNIT 19 Hand-Off Automatic Controls
UNIT 20 Multiple Push-Button Stations
UNIT 21 Interlocking Methods for Reversing Control
UNIT 22 Sequence Control
UNIT 23 Jogging (Inching) Control Circuits
UNIT 24 Time-Delay, Low-Voltage Release Relay
Section 5 AC Reduced Voltage Starters
UNIT 25 The Motor and Starting Methods
UNIT 26 Primary Resistor-Type Starters
UNIT 27 Autotransformer Starters
UNIT 28 Part Winding Motor Starters
UNIT 29 Automatic Starters for Star-Delta Motors
UNIT 30 AC Solid-State Reduced Voltage Controller
Section 6 Three-Phase, Multispeed Controllers
UNIT 31 Controllers for Two-Speed,Two-Winding (Separate Winding) Motors
UNIT 32 Two-Speed, One-Winding (Consequent Pole) Motor Controller
UNIT 33 Four-Speed,Two-Winding (Consequent Pole) Motor Controller
Section 7 Wound Rotor (Slip Ring) Motor Controllers
UNIT 34 Wound Rotor Motors and Manual Speed Control
UNIT 35 Push-Button Speed Selection
UNIT 36 Automatic Acceleration for Wound Rotor Motors
UNIT 37 Automatic Speed Control for Wound Rotor Motors
UNIT 38 Solid-State Adjustable Speed Controller for AC Wound Rotor Motors
Section 8 Synchronous Motor Controls
UNIT 39 Synchronous Motor Operation
UNIT 40 Push-Button Synchronizing
UNIT 41 Timed Semiautomatic Synchronizing
UNIT 42 Synchronous Automatic Motor Starter
Section 9 Direct-Current Controllers
UNIT 43 About DC Motors
UNIT 44 Use of Reduced Voltage for Starting
UNIT 45 Across-the-Line Starting
UNIT 46 Compensating and Definite Time Control Starting
UNIT 47 Solid-State Adjustable Speed Control
Section 10 Methods of Deceleration
UNIT 48 Plugging
UNIT 49 Electric Brakes
UNIT 50 Dynamic and Regenerative Braking
UNIT 51 Electric and Electronic Braking
Section 11 Motor Drives
UNIT 52 Direct Drives and Pulley Drives
UNIT 53 Gear Motors
UNIT 54 Variable-Frequency Mechanical Drives
UNIT 55 AC Adjustable Frequency Drives
UNIT 56 Magnetic Clutch and Magnetic Drive
UNIT 57 DC Variable-Speed Control—Motor Drives
UNIT 58 Programmable and Motion Control
Section 12 Troubleshooting
UNIT 59 Motor Startup and Troubleshooting Basics
UNIT 60 Troubleshooting Techniques
The book "Electric Motor Control" by Stephan L. Herman is a comprehensive resource on the principles, applications, and control techniques of electric motors. It is widely regarded as a foundational text for students, technicians, and professionals in the field of electrical engineering and industrial automation.
Overview of the Book
- Author: Stephan L. Herman, an experienced educator and author in electrical and industrial technologies.
- Focus: The book covers the operation, installation, and troubleshooting of electric motors and their control systems.
- Audience: Ideal for students in vocational and technical schools, as well as professionals looking to enhance their understanding of motor control systems.
Key Topics Covered
Basic Motor Control Principles:
- Introduction to electric motors, their types, and applications.
- Fundamental concepts of electrical circuits and components used in motor control.
Types of Electric Motors:
- Detailed study of AC and DC motors.
- Characteristics, advantages, and applications of induction, synchronous, and stepper motors.
Motor Control Components:
- Relays, contactors, overload protection, and pilot devices.
- Explanation of their functions and how they integrate into motor control circuits.
Control Circuit Design:
- Schematic diagrams and ladder logic for designing control circuits.
- Analysis of typical control systems, including starting, stopping, reversing, and speed control of motors.
Programmable Logic Controllers (PLCs):
- Introduction to PLCs and their role in modern motor control.
- Programming basics and integration with motor control systems.
Safety and Maintenance:
- Importance of safety standards in motor control systems.
- Maintenance practices for ensuring system reliability and longevity.
Advanced Motor Control Techniques:
- Variable frequency drives (VFDs) for speed and torque control.
- Emerging technologies and their impact on motor control systems.
Features of the Book
- Real-World Examples: Practical examples and scenarios to connect theory with industry applications.
- Illustrations and Diagrams: Extensive use of visuals to enhance understanding of complex concepts.
- Step-by-Step Approach: Clear and methodical explanations suitable for learners at all levels.
- Practice Problems: End-of-chapter exercises for testing comprehension and problem-solving skills.
Why the Book is Important
- Comprehensive Coverage: Offers a deep dive into both fundamental and advanced topics, making it a one-stop reference.
- Educational Value: Focuses on building foundational knowledge while preparing readers for real-world applications.
- Alignment with Industry Needs: Addresses modern control systems and technologies, such as PLCs and VFDs.
- Accessible Writing Style: Uses straightforward language to explain technical concepts, making it beginner-friendly.
Applications of Knowledge from the Book
- Industrial Automation: Understanding motor control in manufacturing and process industries.
- HVAC Systems: Application of motor control techniques in heating, ventilation, and air conditioning systems.
- Renewable Energy Systems: Integration of motor control systems in wind turbines, solar tracking systems, and more.
- Transportation: Application in electric vehicles, elevators, and railway systems.
Conclusion
Stephan L. Herman's "Electric Motor Control" serves as an essential resource for anyone involved in the design, operation, or maintenance of motor control systems. Its blend of theoretical knowledge and practical insights makes it an invaluable guide for mastering the complexities of electric motor control in a rapidly evolving technological landscape.
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