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Designed to serve as a textbook for a single semester undergraduate course on electromechanical energy conversion devices or electric machines, ELECTRIC MACHINES strikes a balance between theoretical coverage, easy explanations, and practical applications, presenting real world applications of concepts without compromising on the rigor or the continuity of the text. The book provides excellent readability, in a conversational style, combined with invaluable industry insight. The accompanying website provides problems solved in MATLAB, SPICE simulations, manufacturing data, as well as additional problems for students and instructors.
- New chapter on Electrical Safety and Energy Conservation.
- Additions and updates to sections on: Power factor concepts in linear and non -linear loads, Harmonics, Super capacitors, Magnetic levitation, Digital measuring Instruments and wiring diagrams, Optical measuring devices, Special type of transformers, Wind power generators, Speed control of 3-phase induction motors ( Star -Delta Starters, speed controllers using IGPT and soft starters), Programmable logic controllers (PLC's), and Unbalanced operation of 3-phase systems.
- Inclusion of Control Schematics.
- Clear and precise descriptions.
- Many application based examples.
- Great balance between high quality theoretical coverage, easy explanations, and practical application examples.
1. BASIC ELECTROMAGNETIC CONCEPTS.
Electric Circuit Concepts. Magnetic Circuits Concepts. Force, Energy, and Torque. Summary. Review Questions. Problems.
Single-Phase Transformers. Three-Phase, Two-Winding Transformers. Autotransformers. Parallel Operation of Transformers. Instrument Transformers and Wiring Diagrams. Transformer's Name-Plate Data. Conclusion. Review Questions. Problems.
3. THREE-PHASE INDUCTION MACHINES.
Three-Phase Induction Motors. Industrial Considerations. Measurement of Equivalent-Circuit Parameters. Asynchronous Generators. Controls. Conclusion. Tables. Review Questions. Problems.
4. SINGLE-PHASE MOTORS.
Revolving Fields. Equivalent Circuit. Torque Developed. Methods of Starting Single-Phase Induction Motors. Magnetic Fields at Starting. Types of 1-Φ Motors. Conclusion. Problems.
5. THREE-PHASE SYNCHRONOUS MACHINES.
Three-Phase Cylindrical Rotor Machines: Motors. Three-Phase Cylindrical Rotor Machines: Generators. Salient-Pole Synchronous Machines. Conclusion. Review of Important Mathematical Relationships. Manufacturer's Data. Review Questions. Problems.
6. DC MACHINES.
Steady-State Analysis. Modern Methods of Speed Control. Conclusion. Review Questions. Problems.
7. CONTROL SCHEMATICS.
Basic Devices and Symbols. The Concept of Protection. Actual Control Schematics. Conclusion. Review Questions. Problems.
8. ELECTRICAL SAFETY AND REDUCTION IN ENERGY CONSUMPTION.
Electrical Safety. Reduction in Energy Consumption.
Appendix A: Three-phase systems.
Appendix B: Per-Unit System.
Appendix C: Laplace Transforms.
Appendix D: Solid State Devices.
Appendix E: Basic Economic Considerations.
Appendix F: Photovoltaics.
Appendix G: Tables.
Appendix H: Bibliography.
Answers to Problems.
"As an instructor of Engineering Technology students, I was especially pleased to read (in the preface) that great effort was made to 'bridge the gap between academic work and practical work'."
"I especially like the practical focus of the book. In these days of reduced laboratory experience, the student may not get a chance to experiment with real transformers, motors and generators. While the very practical information stressed here is not a perfect substitute for hands-on work, this information will be very valuable."
"I am glad to see that [the second edition] retained all of the wonderful coverage of fundamentals and engineering practice that made [the] first edition so valuable, and I know that future generations of students will benefit from the book like myself...The textbook proper can definitely serve an undergraduate course on Electric Machines, and the textbook with the web resources can be used at the graduate level. [The] textbook offers numerous insights into the practice of engineering. The explanations and figures are thoughtful and beneficial to the learning process. The in-chapter examples, exercises, and end-of-chapter problems are exceptional; in that, they not only support an understanding of the subject matter, but offer practical insight into applications. [This] textbook is unique because it seamlessly blends fundamentals and engineering practice. It is a 'must have' for students and practicing engineers alike."
Cengage provides a range of supplements that are updated in coordination with the main title selection. For more information about these supplements, contact your Learning Consultant.
Instructor Companion Website
Find everything you need for your course in one place. This companion site provides helpful instructor-only resources, including PowerPoint® Slides with Lecture Notes and an Instructor’s Solutions Manual. All users require a verified instructor log-in to access this site.