Switched Reluctance Motor Drives
Modeling, Simulation, Analysis, Design, and Applications
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Book Description
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.
Table of Contents
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