2nd Edition

Linear Synchronous Motors Transportation and Automation Systems, Second Edition

    534 Pages 311 B/W Illustrations
    by CRC Press

    534 Pages 311 B/W Illustrations
    by CRC Press

    Considered to be the first book devoted to the subject, Linear Synchronous Motors: Transportation and Automation Systems, Second Edition evaluates the state of the art, demonstrating the technological innovations that are improving the design, construction, and performance of modern control systems. This new edition not only illustrates the development of linear synchronous motor drives, but it also discusses useful techniques for selecting a motor that will meet the specific requirements of linear electrical drives.

    New Features for the Second Edition:

    • Several updated and expanded sections, as well as two new chapters on FEM
    • Even more numerical examples, calculations, and mathematical models
    • Broadened target audience that includes researchers, scientists, students, and more

    Evaluating trends and practical techniques for achieving optimal system performance, the authors showcase ready-to-implement solutions for common roadblocks in this process. The book presents fundamental equations and calculations used to determine and evaluate system operation, efficiency, and reliability, with an exploration of modern computer-aided design of linear synchronous motors, including the finite element approach. It covers topics such as linear sensors and stepping motors, magnetic levitation systems, elevators, and factory automation systems. It also features case studies on flat PM, tubular PM, air-cored, and hybrid linear synchronous motors, as well as 3D finite element method analysis of tubular linear reluctance motors, and linear oscillatory actuators.

    With such an exceptional presentation of practical tools and conceptual illustrations, this volume is an especially powerful resource. It will benefit readers from all walks by providing numerical examples, models, guidelines, and diagrams to help develop a clear understanding of linear synchronous motor operations, characteristics, and much more.

    Topologies and Selection

    Definitions, Geometry, and Thrust Generation

    Linear Synchronous Motor Topologies

    Calculation of Forces

    Linear Motion

    Selection of Linear Motors

    Materials and Construction


    Laminated Ferromagnetic Cores

    Permanent Magnets


    Insulation Materials

    Principles of Superconductivity

    Superconducting Wires

    Laminated Stacks

    Armature Windings of Slotted Cores

    Slotless Armature Systems

    Electromagnetic Excitation Systems

    Permanent Magnet Excitation Systems

    Superconducting Excitation Systems

    Hybrid Linear Stepping Motors

    Theory of Linear Synchronous Motors

    Permanent Magnet Synchronous Motors

    Motors with Superconducting Excitation Coils

    Double-Sided LSM with Inner Moving Coil

    Variable Reluctance Motors

    Switched Reluctance Motors

    FEM Analysis

    Fundamental Equations of Electromagnetic Field

    FEM Modeling

    Time-Stepping FEM Analysis

    FEM Analysis of Three-Phase PM LSM

    Hybrid and Special Linear Permanent Magnet Motors

    Permanent Magnet Hybrid Motors

    Five-Phase Permanent Magnet Linear Synchronous Motors

    Tubular Linear Reluctance Motors

    Linear Oscillatory Actuators

    Motion Control

    Control of AC Motors

    EMF and Thrust of PM Synchronous and Brushless Motors

    Model of PM Motor in dq Reference Frame

    Thrust and Speed Control of PM Motors

    Control of Hybrid Stepping Motors

    Precision Linear Positioning


    Linear Optical Sensors

    Linear Magnetic Encoders

    High-Speed Maglev Transport

    Electromagnetic and Electrodynamic Levitation

    Transrapid System (Germany)

    Yamanashi Maglev Test Line in Japan

    American Urban Maglev


    Marine Express

    Building and Factory Transportation Systems

    Elevator Hoisting Machines

    Ropeless Elevators

    Horizontal Transportation Systems

    Industrial Automation Systems

    Automation of Manufacturing Processes

    Ball Lead Screws

    Linear Positioning Stages

    Gantry Robots

    Material Handling

    Machining Processes

    Welding and Thermal Cutting

    Surface Treatment and Finishing

    2D Orientation of Plastic Films


    Industrial Laser Applications

    Appendix A: Magnetic Circuits with Permanent Magnets

    A.1 Approximation of Demagnetization Curve and Recoil Line

    A.2 Operating Diagram

    Appendix B: Calculations of Permeances

    B.1 Field Plotting

    B.2 Dividing the Magnetic Field into Simple Solids

    B.3 Prisms and Cylinders Located in an Open Space

    Appendix C: Performance Calculations for PM LSMs

    Appendix D: Field-Network Simulation of Dynamic




    Jacek F. Gieras graduated in 1971 from the Technical University of Lodz, Poland, with distinction. In 1980, he received his Ph.D degree in Electrical Engineering (Electrical Machines) in 1975, and the Dr habil. degree (corresponding to DSc), also in Electrical Engineering, from the University of Technology, Poznan, Poland. His research area is Electrical Machines, Drives, Electromagnetics, Power Systems, and Railway Engineering. In 1987 he was promoted to the rank of full professor. Since 1998 he has been affiliated with United Technologies Corporation, USA. In 2007 he also joined the University of Technology and Life Sciences in Bydgoszcz, Poland, as a full professor. An IEEE fellow, Prof. Gieras has authored and co-authored 11 books of international standing and more than 250 scientific and technical papers. In addition, he holds 30 patents.

    Zbigniew (Jerry) Piech graduated in 1975 from the Technical University of Wroclaw, Poland. He received his Ph.D degree in Electrical Engineering in 1981, also from the Technical University of Wroclaw. From 1975 to 1989 he was an academic staff member of the Department of Electrical Engineering at the University of Technology and Life Sciences, Bydgoszcz, Poland. He joined United Technologies Corporation in 1990.

    His major contributions in the area of electric machines and power systems include development of a series of modern permanent magnet brushless motors for Otis Elevator Company. During the past 10 years he has had a leading role in establishing permanent magnet motor technology for the company. Dr Piech authored and coauthored 20 publications and holds 14 patents in the area of electric machine design and controls.

    Bronislaw Z. Tomczuk graduated in 1977 from the Opole University of Technology, Poland, with honors. He received his PhD and Dr habil. (corresponding to DSc) degrees from the Technical University of Lodz, Poland, in 1985 and 1995, respectively. Since 1978, he has been on the academic staff of the Technical University of Opole, Poland, and he was promoted to full professor in 2007. His area of interest is 3D mathematical modeling of electromagnetic fields using numerical methods and its applications to CAD of transformers, linear motors, actuators, magnetic bearings, and other electromagnetic devices. He has authored or coauthored five books and more than 170 scientific and technical articles, and he holds 10 patents. He is also a recipient of the Gold Cross of Merit from the President of Poland.