1st Edition

Switched Reluctance Motor Drives Modeling, Simulation, Analysis, Design, and Applications

By R. Krishnan Copyright 2001

    The switched reluctance machine (SRM) is the least expensive electrical machine to produce, yet one of the most reliable. As such, research has blossomed during the last decade, and the SRM and variable drive systems using SRMs are receiving considerable attention from industry. Because they require a power electronic converter and controller to function, however, successful realization of an SRM variable drive system demands an understanding of the converter and controller subsystems and their integration with the machine.

    Switched Reluctance Motor Drives provides that understanding. It presents a unified view of the machine and its drive system from all of its system and subsystem aspects. With a careful balance of theory and implementation, the author develops the analysis and design of SRMs from first principles, introduces a wide variety of power converters available for driving the SRM, and systematically presents both low- and high-performance controllers. The book includes an in-depth study of acoustic noise and its minimization along with application examples that include comparisons between ac and dc drives and SRM drive.

    The result is the first book that provides a state-of-the-art knowledge of SRMs, power converters, and their use with both sensor-based and sensorless controllers. Switched Reluctance Motor Drives enables both students and engineers to learn all aspects of SRM drive systems and appreciate the interdependence of the various subsystems in performance optimization.

    PRINCIPLE OF OPERATION OF THE SWITCH RELUCTANCE MOTOR (SRM)
    Introduction
    Background
    Elementary Operation of the Switch Reluctance Motor
    Principle of Operation of the Switched Reluctance Motor
    Derivation of the Relationship Between Inductance and Rotor Position
    Equivalent Circuit
    SRM Configurations
    Linear Switched Reluctance Machines
    References
    DERIVATION OF SRM CHARACTERISTICS
    Introduction
    Data for Performance Computation
    Analytic Method for the Computation of Machine Characteristics
    Computation of Unaligned Inductance
    Computation of Aligned Inductance
    Computation of Inductance vs. Rotor Position vs. Excitation Current
    Comparison of Measured, Analytic and Finite Element Results
    References
    DESIGN OF SRM
    Introduction
    Derivation of Output Equation
    Selection of Dimensions
    Design Verification
    Operational Limit
    Selection of Number of Phases
    Selection of Poles
    Ratio of Pole-Arc to Pole-Pitch
    Selection of Pole Base
    Selection of Pole-Arcs
    Measurement of Inductance
    Calculation of Torque
    Design of Linear Switched Reluctance Machine (LSRM)
    References
    CHAPTER 4: CONVERTERS FOR SRM DRIVES
    Converter Configurations
    Asymmetric Bridge Converter
    Asymmetric Converter Variation
    Single Switch per Phase Converters
    m Switches and 2m Diodes
    m Switches and 2m Diodes with Independent Phase Current Control
    (m+1) Switch and Diode Configurations
    One Common Switch Configuration
    Minimum Switch Topology With Variable DC Link
    Variable DC Link Voltage with Buck Boost Converter Topology
    1.5m Switches and Diodes Configuration
    Comparison of Some Power Converters
    Two Stage Power Converter
    Resonant Converter Circuits for Switched Reluctance Motor Drives
    References
    CONTROL OF SRM DRIVE
    Introduction
    Control Principle
    Closed Loop Speed Controlled SRM Drive
    Design of Current Controllers
    Flux Linkage Controller
    Torque Control
    Design of the Speed Controller
    References
    MODELING AND SIMULATION OF SRM DRIVE SYSTEM
    Introduction
    Modeling
    Simulation
    References
    ACOUSTIC NOISE AND ITS CONTROL IN SRM
    Introduction
    Sources of Acoustic Noise in Electrical Machines
    Noise Sources
    Noise Mitigation
    Qualitative Design Measures to Reduce Noise
    Measurement of Acoustic Noise and Vibrations
    Future Directions
    Appendix-1: Derivation of First Mode Frequency of SRM
    References
    SENSORLESS OPERATION OF SRM DRIVES
    Introduction
    Current Sensing
    Rotor Position Measurement Methods
    Rotor Position Estimation
    References
    APPLICATION CONSIDERATIONS AND APPLICATIONS
    Introduction
    Review of SRM Drive Features for Application Consideration
    Applications
    Emerging applications
    References

    Biography

    Krishnan, R.