"Motors and Drives: A Practical Technology Guide" by Dave Polka (Repost)

This is a good fundamental book on DC and AC motors and drives. This text introduces engineering concepts of motors and drives in a way that can be understood by both engineers unfamiliar with the technology and by technicians who are technically literate but not accustomed to complex theory and mathematics. It features simple explanations, summaries, reviews questions, glossaries, and reference tables for formulas and conversions.

Excellent overall book written for the Control Specialist. Not a textbook, but a thorough review of all motor and drive systems being used within the industry.

The text begins with an explanation of the principles of DC and variable frequency AC drive technology, then goes on to cover DC and AC motor and drive operation, step motors, AC vector motors, servo motors, and vector drives.
Feedback devices such as tachometers and encoders are also addressed as they relate to speed and torque control. Later chapters cover drive systems control methods and the maintenance and troubleshooting of drive systems.

Contents
Introduction
1. What is a Drive?
2. Review of Basic Principles
3. AC and DC Motors
4. AC and DC Drives
5. Drive Control and Feedback Devices
6. Drive System Control Methods
7. Maintenance and Troubleshooting of Drive Systems
8. Final Review & Closing Remarks
9. Check Your Knowledge
Appendix A: Check Your Knowledge - Answers
Appendix B: Formulas and Conversions
Appendix C: Drive Enclosure Types
Appendix D: Terms and Definitions
Bibliography
Index