Mechanical Design of Electric Motors by Wei Tong 




Preface:

Electric motors are extensively used in industrial, commercial, and military applications such as automobiles, elevators, electronic devices, robots, appliances, medical equipment, energy-conversion systems, machine tools, aircraft carriers, and satellites. Along with the rapid growth in energy demand all over the world in recent years, it has become a challenge for the motor industry to design and manufacture high-efficiency, high-reliability, low-cost, and quiet electric motors with superior performance.
Kollmorgen Corporation, a subsidiary of Danaher Corporation, is the global leader in the design, development, manufacture, and service of innovative and reliable products in the motion control industry. As the chief engineer of Kollmorgen, I have long been eagerly awaiting a modern book on the mechanical design of electric motors. However, most available books on electric motors in the market focus primarily on electromagnetic design rather than mechanical design.

After a long unsuccessful search, one day I was suddenly struck with a thought: Why not write this book myself? This thought has inspired me to embark on the arduous task of compiling recent developments and advances in the mechanical design of electric motors into one book. Despite significant advances in the last decades, the design, development, and implementation of modern electric motors still pose challenges for motor engineers and designers.
This is because they involve a wide variety of disciplines, such as mechanics, electromagnetics, electronics, fluid and solid dynamics, heat transfer, material science, tribology, acoustics, control theory, manufacturing technology, and engineering economics, to name a few. In order to meet customer-specific requirements, today’s motor manufacturers must effectively provide customized premium efficient products and services for accommodating multiple markets.

The ultimate goal of this book is to provide readers an in-depth knowledge base of designs, techniques, and developments of modern electric motors. The text is suitable for engineers, designers, and manufacturers in the motor industry, as well as maintenance personnel, graduate and undergraduate students, and academic researchers. This book has addressed in detail many aspects of motor design and performing characteristics, including motor classification, design of motor components, material selections, power losses, cooling, design integration, vibration, and acoustic noise. It also covers motor modeling, simulation, and engineering analysis.
To reflect state-of-the-art electric motors, innovative and advanced motors developed in recent decades are reviewed in the book. The book consists of a total of 12 chapters that cover electric motor fundamentals, practical design, engineering analysis, model setup, material and bearing selection, manufacturing processes, testing methods, and other design issues/practical considerations of electric motors. Chapter 1 presents the overview of the basic knowledge and fundamental principles of electric motors.