Audel? Small Electric Motors by Miller, Rex; Miller, Mark Richard;

Short description:

Small Electric Motors (Second Edition) is a unique book with almost no competition in its field. It has undergone a major revision, adding coverage of motors now found in robots and small appliance controls, such as stepper motors, brushless DC motors, pancake DC motors, hysteresis motors, reversing and unidirectional synchronous motors, axial fan motors, ironless rotor DC motors, and more. Professionals as well as do-it-yourselfers who work with robotic and small electric motors and in machine shops will find this book invaluable.

Long description:

Small Electric Motors (Second Edition) is a unique book with almost no competition in its field. It has undergone a major revision, adding coverage of motors now found in robots and small appliance controls, such as stepper motors, brushless DC motors, pancake DC motors, hysteresis motors, reversing and unidirectional synchronous motors, axial fan motors, ironless rotor DC motors, and more. Professionals as well as do-it-yourselfers who work with robotic and small electric motors and in machine shops will find this book invaluable.

Table of Contents:

Preface.

Acknowledgments.

PART ONE?Introduction.

1. Motor Repair Tools.

Screwdrivers ? Pliers ? Hammers ? Hacksaws ? Wrenches ? Other Tools ? Meters and Test Devices.

2. Motor Repair Supplies.

Setscrews ? Carbon Brushes ? Bushings and Bearings ? Shaft Adapters ? Rubber Mounts ? Fiber Washers ? Rubber Grommets ? Replacement Switches ? Electrolytic Capacitors ? Insulating Enamel ? Cord ? Motor Wiring for Installation.

PART TWO?Fractional-Horsepower Motors (Basic Types).

3. Small DC and Universal Motors.

Shunt DC Motors ? Compound Motors ? Permanent-Magnet Motors ? Series or Universal Motors ? The Hand Drill ? Portable Saws ? Repairing a Series (Universal) Motor ? Miscellaneous Information.

4. Split-Phase Motors.

Starting a Single-Phase Motor ? Starting a Split-Phase Motor ? Characteristics of the Split-Phase Motor ? Dual Frequency Operation ? Motor Noise and Vibration.

5. Capacitor-Start Motors.

Starting a Capacitor-Start Motor ? The Electrolytic Capacitor ? Characteristics of the Electrolytic Capacitor ? Characteristics of Capacitor Motors ? Reversing the Motor ? Dual-Frequency Operation ? Mechanical and Electrical Noises.

6. Shaded-Pole Motors.

Starting the Shaded-Pole Motor ? Types of Shaded-Pole Motors ? Construction of Shaded-Pole Motors ? Performance of Shaded-Pole Motors ? Applications of Shaded-Pole Motors.

7. Three-Phase Motors.

Uses of Three-Phase Motors ? How Three-Phase Motors Work ? Torque ? Motor Ventilation ? Motor Losses ? Reversibility ? Applications of Three-Phase Motors.

8. Special Types of Motors.

Understanding the Nameplate ? Troubles ? Bearings ? Three-Speed Motors ? Instant-Reversing Motors ? Severe-Duty Motors ? Farm-Duty Motors ? High-Slip Motors ? Explosion-Proof Motors ? Metric Motor Ratings.

PART THREE?Maintenance and Repair.

9. General Maintenance.

General Troubleshooting Procedures ? Maintenance of the Split-Phase Motor ? Maintenance of Capacitor Motors ? Electrolytic Capacitors ? The Permanent Split-Capacitor Motor ? Maintenance of the Three-Phase Motor ? Maintenance of Brush-Type Motors.

10. Commutators and Brushes.

The Armature ? Magnet-Wire Characteristics ? Commutator Maintenance ? Brushes.

11. Shafts and Bearings.

Motor Shafts ? Selection of Bearings ? Ball Bearings ? Bearing Failure ? Motor Problems Caused by Bearing Wear or Damage.

12. Switches and Relays.

Overload Protection ? Internal (Line Break) Motor Protector ? Relays for Motor Control ? Maintenance and Repair of Relays ? Electronic Speed Control.

13. Armatures?Stripping and Rewinding.

Checking the Armature ? Commutator Removal ? Tests on the Commutator ? Difficult Windings ? Replacing the Commutator ? Hand Winding, Coil Forming, and Slot Wedging ? Loop Method of Winding ? Armature Banding ? Testing the Armature ? Automated Armature Winding.

14. Stators?Stripping and Rewinding.

Stripping a Winding ? Rewinding a Stator ? Mold and Hand Winding ? Automatic Coil Winding.

PART FOUR?Modifications of Motors.

15. Modifying Motors.

Motor Modifications for Shafts ? Speed Controls ? Modifying AC Motors for Speed Control ? AC Motor Speed-Control Methods ? Reversing Direction of Rotation.

PART FIVE?Motor Selection and Replacement.

16. Motor Selection and Replacement.

Selection of Motor Type ? Motor Mounting ? Part-Winding Starting ? Enclosures and Special Winding Treatment ? Guide to Selecting the Right Motor ? Installation ? Location and Motor Enclosures ? Maintenance.

PART SIX?Electronically-Operated Motors.

17. Steppers and Synchronous Motors.

Shaded-Pole Unidirectional Synchronous Motors ? Capacitor Start and Run Bidirectional Synchronous Motor ? Single-Phase Stepper Motor (Unipolar Drive) ? Single-Phase Stepper Motor (Bipolar Drive) ? Two-Phase Stepper Motor (Unipolar Drive) ? Four-Phase Stepper Motor (Unipolar Drive) ? Open-Frame Synchronous and Stepper Motors ? Reversible Step Servo Motor ? High-Torque Reversible AC Motor ? 3-Wire Stepper Motor (Open Frame).

18. Motion Control.

Disc Magnet Stepper Terminology ? Disc Magnet Steppers ? Disc Magnet Two-Phase Stepper Motor ? PM Two- and Four-Phase Stepper Motors ? Two- and Four-Phase Linear Stepper Motors ? Brushless DC Motors ? Ironless Rotor DC Motors.

PART SEVEN?Motor Terminology.

19. Motor Terminology.

Appendix.

Fractional-Horsepower Motors and Their Applications ? NEMA Motor Frame Dimension Standards ? Motor Schematics ? Formulas for Motor Applications ? Horsepower/Watts vs. Torque Conversion Chart ? Temperature Conversion Table ? Electrical Formulas ? SI (Metric) Conversion Tables ? Mechanical and Electrical Characteristics ? Motor Frame Dimensions ? NEMA Frame Specifications ? Electronic Symbols for Devices Used with Electric Motors.

Appendix.

Index.