Mechanical Design of Electric Motors

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Language: Anglais

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702 p. · 17.8x25.4 cm · Paperback
Rapid increases in energy consumption and emphasis on environmental protection have posed challenges for the motor industry, as has the design and manufacture of highly efficient, reliable, cost-effective, energy-saving, quiet, precisely controlled, and long-lasting electric motors.

Suitable for motor designers, engineers, and manufacturers, as well as maintenance personnel, undergraduate and graduate students, and academic researchers, Mechanical Design of Electric Motors provides in-depth knowledge of state-of-the-art design methods and developments of electric motors. From motor classification, design of motor components, model setup, and material and bearing selections to power losses, motor cooling, design integration, vibration, and acoustic noise, this comprehensive text covers the fundamentals, practical design and design-related issues, modeling and simulation, engineering analysis, manufacturing processes, testing procedures, and performance characteristics of electric motors today.

Focusing on the mechanical design of modern electric motors, the book:
  • Details the design and manufacture of major components and subsystems, such as rotors, shafts, stators, and frames
  • Reviews various cooling techniques, including forced air, liquid, and phase-change
  • Discusses the analysis and calculation of motor power losses
  • Addresses motor vibration and acoustic noise issues
  • Presents engineering analysis methods and case study results
  • Emphasizes construction, optimization, and applications

Featuring research results from the author’s own personal experience and the significant contributions of others, Mechanical Design of Electric Motors highlights innovative and advanced electric motors developed in recent decades.
Preface
List of Symbols

Introduction of Electric Motors
. History of Electric Motors
. Motor Design Characteristics
. Classifications of Electric Motors
. Motor Design and Operation Parameters
. Sizing Equations
. Motor Design Process and Consideration
. Motor Failure Mode
. IP Code

Rotor Design
. Rotor in Induction Motor
. Permanent Magnet Rotor
. Rotor Manufacturing Process
. Rotor Dynamic Balancing
. Interference Fit
. Stress Analysis of Rotor
. Rotordynamic Analysis
. Rotor Burst Containment Analysis

Shaft Design
. Shaft Materials
. Shaft Loads
. Shaft Design Methods
. Engineering Calculations
. Shaft Design Issues
. Stress Concentration
. Torque Transmission through Mechanical Joints
. Fatigue Failure: Alternative Loading
. Shaft Manufacturing Methods
. Shaft Misalignment between Motor and Driven Machine
. Shaft Coupling

Stator Design
. Stator Lamination
. Magnet Wire
. Stator Insulation
. Manufacturing Process of Stator Core
. Stator Encapsulation and Impregnation
. Stator Design Considerations
. Mechanical Stress of Stator

Motor Frame Design
. Types of Motor Housing
. Testing Methods of Casted Motor Housing
. Eedbell Manufacturing
. Motor Assembly Methods
. Fastening System Design
. Anti-Corrosion of Electric Motor and Components

Motor Bearing
. Bearing Classification
. Bearing Design
. Bearing Fatigue Life
. Bearing Failure Mode
. Bearing Noise
. Bearing Selection
. Bearing Performance Improvement

Motor Power Losses
. Power Losses in Windings Due to Electric Resistance in Copper Wires
. Eddy Current and Magnetic Hysteresis Losses
. Mechanical Friction Losses
. Windage Losses
. Stray Load Losses

Motor Cooling
. Introduction
. Conductive Heat Transfer Techniques
. Natural Convection Cooling with Fins
. Forced Air Cooling Techniques
. Liquid Cooling Techniques
. Phase-Change Cooling Techniques
. Radiative Heat Transfer
. Other Advanced State-of-the-Art Cooling Methods

Motor Vibration and Acoustic Noise
. Vibration and Noise in Electric Motor
. Fundamentals of Vibration
. Electromagnetic Vibrations
. Mechanical Vibrations
. Vibration Measurements
. Vibration Control
. Fundamentals of Acoustic Noise
. Noise Types and Measurements for Rotating Electric Machines
. Motor Noise Abatement Techniques

Motor Testing
. Motor Testing Standards
. Testing Equipment and Measuring Instruments
. Testing Load Level
. Testing Methods
. Off-Line Motor Testing
. Online Motor Testing

Modeling, Simulation, and Analysis of Electric Motors
. Computational Fluid Dynamics and Numerical Heat Transfer
. Thermal Simulation with Lumped-Circuit Modeling
. Thermal Analysis using Finite Element Method
. Rotordynamic Analysis
. Static and Dynamic Stress/Strain Analysis
. Fatigue Analysis
. Torsional Resonance Analysis
. Motor Noise Prediction
. Buckling Analysis
. Thermally-Induced Stress Analysis
. Thermal Expansion and Contraction Analysis

Innovative and Advanced Motor Design
. High Temperature Superconducting Motor
. Radial-Flux, Multi-Rotor, or Multi-Stator Motor
. Axial-Flux, Multi-Rotor, or Multi-Stator Motor
. Hybrid Motor
. Conical Rotor Motor
. Transverse-Flux Motor
. Reconfigurable Permanent Magnet Motor
. Variable Reluctance Motor
. Permanent Magnet Memory Motor
. Adjustable and Controllable Axial Rotor/Stator Alignment Motor
. Piezoelectric Motor
. Advanced Electric Machines for Renewable Energy
. Micromotor and Nanomotor

References
Engineers, designers, and manufacturers in the motor industry, as well as maintenance personnel, graduate and undergraduate students, and academic researchers.
Wei Tong, Ph.D, PE is chief engineer at Kollmorgen Corporation, a subsidiary of Danaher Corporation, Radford, Virginia, USA. He is an internationally recognized expert on mechanical–electrical–thermal systems. A fellow of the American Society of Mechanical Engineers and a registered professional engineer in the state of Virginia, USA. He presently serves as an associate editor of ASME Journal of Heat Transfer and International Journal of Rotating Machinery.