Book description
The application of bearingless drives is emerging as an important technique in the areas of high-speed machinery and motion-control, and this book aims to provide a thorough grounding in the principles behind this cutting-edge technology. Basic principles are described in detail with practical examples to aid understanding, and the different types of bearingless drives are introduced, along with coverage of test machines and applications.Aimed at practising electrical and mechanical engineers and advanced students, Magnetic Bearings and Bearingless Drives provides an essential guide to an area of engineering previously only fully covered by large numbers of academic papers.
· Unique and comprehensive coverage of a cutting-edge subject for electrical and mechanical engineers
· A reference text and survey for designers, manufacturers and users of high-speed motors, generators and electrical drive systems
· Examines the basic principles behind magnetic bearings, with key technologies and applications illustrated through examples and case studies
Table of contents
- Cover image
- Title page
- Table of Contents
- Copyright
- List of Contributors
- Foreword
- Preface
- Acknowledgements
- Chapter 1: Introduction
- Chapter 2: Electro-magnetics and mathematical model of magnetic bearings
- Chapter 3: Magnetic bearing controllers
- Chapter 4: Mechanical dynamics
- Chapter 5: Power electronic circuits for magnetic bearings
-
Chapter 6: Primitive model and control strategy of bearingless motors
- 6.1 Principles of radial force generation
- 6.2 Two-pole bearingless motor
- 6.3 MMF and permeance
- 6.4 Magnetic potential and flux distribution
- 6.5 Inductance matrix
- 6.6 Radial force and current
- 6.7 The dc excitation of the primitive bearingless motor
- 6.8 AC excitation and revolving magnetic field
- 6.9 Inductance measurements
- Chapter 7: Analysis in rotational coordinates and magnetic suspension strategy for bearingless drives with 2-pole and 4-pole windings
- Chapter 8: Field orientation, VA requirement and magnetic saturation
-
Chapter 9: Cylindrical permanent magnet synchronous bearingless motors
- 9.1 Structure of surface permanent magnet (SPM) rotor
- 9.2 Radial suspension force and suspension winding current
- 9.3 Equations of voltage and current
- 9.4 Guideline for permanent magnet thickness and airgap length
- 9.5 Irreversible permanent magnet demagnetization and MMF limitations of stator windings
- 9.6 Control system configuration
- Chapter 10: Inset types of permanent magnet bearingless motor
- Chapter 11: Buried permanent magnet bearingless motors
- Chapter 12: Synchronous reluctance bearingless motors
- Chapter 13: Bearingless induction motors
- Chapter 14: Homopolar, hybrid and consequent-pole bearingless motors
-
Chapter 15: Switched reluctance bearingless motors
- 15.1 Configuration of stator windings and principles of suspension force generation
- 15.2 Derivation of inductances
- 15.3 Assumption and calculation of permeances
- 15.4 Theoretical formulae of suspension force and torque
- 15.5 A drive system
- 15.6 A feed-forward compensator for vibration reduction considering magnetic attraction force
- Chapter 16: Winding arrangement variations
- Chapter 17: Mechanical structure and position regulation
- Chapter 18: Displacement sensors and sensorless operation
- Chapter 19: Controllers and power electronics
- Chapter 20: Design procedure and examples
- Chapter 21: Applications and test machines
- Index
Product information
- Title: Magnetic Bearings and Bearingless Drives
- Author(s):
- Release date: May 2005
- Publisher(s): Newnes
- ISBN: 9780080478975
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