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

The switched reluctance machine (SRM) is the least expensive, yet one of the most reliable, electrical machines to produce and operate, and, therefore, the focus of considerable industry attention. Engineers need to understand the integration of the machine, converter, and controller subsystems to successfully realize SRM variable drive systems. The book provides state-of-the-art knowledge on SRMs, their associated power converters and controllers, and their integration. It presents the analysis and design of SRMs from first principles, introduces a wide variety of converters available for driving SRMs, and develops a step- by-step procedure to model and simulate SRM drive systems.

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)IntroductionBackgroundElementary Operation of the Switch Reluctance MotorPrinciple of Operation of the Switched Reluctance MotorDerivation of the Relationship Between Inductance and Rotor PositionEquivalent CircuitSRM ConfigurationsLinear Switched Reluctance MachinesReferencesDERIVATION OF SRM CHARACTERISTICSIntroductionData for Performance ComputationAnalytic Method for the Computation of Machine CharacteristicsComputation of Unaligned InductanceComputation of Aligned InductanceComputation of Inductance vs. Rotor Position vs. Excitation CurrentComparison of Measured, Analytic and Finite Element Results ReferencesDESIGN OF SRMIntroductionDerivation of Output EquationSelection of DimensionsDesign VerificationOperational LimitSelection of Number of PhasesSelection of PolesRatio of Pole-Arc to Pole-PitchSelection of Pole BaseSelection of Pole-ArcsMeasurement of InductanceCalculation of TorqueDesign of Linear Switched Reluctance Machine (LSRM)ReferencesCHAPTER 4: CONVERTERS FOR SRM DRIVESConverter ConfigurationsAsymmetric Bridge ConverterAsymmetric Converter VariationSingle Switch per Phase Convertersm Switches and 2m Diodesm Switches and 2m Diodes with Independent Phase Current Control (m+1) Switch and Diode ConfigurationsOne Common Switch ConfigurationMinimum Switch Topology With Variable DC LinkVariable DC Link Voltage with Buck Boost Converter Topology1.5m Switches and Diodes ConfigurationComparison of Some Power ConvertersTwo Stage Power ConverterResonant Converter Circuits for Switched Reluctance Motor DrivesReferencesCONTROL OF SRM DRIVEIntroductionControl PrincipleClosed Loop Speed Controlled SRM DriveDesign of Current ControllersFlux Linkage ControllerTorque ControlDesign of the Speed ControllerReferencesMODELING AND SIMULATION OF SRM DRIVE SYSTEMIntroductionModelingSimulation ReferencesACOUSTIC NOISE AND ITS CONTROL IN SRMIntroductionSources of Acoustic Noise in Electrical MachinesNoise SourcesNoise MitigationQualitative Design Measures to Reduce NoiseMeasurement of Acoustic Noise and VibrationsFuture DirectionsAppendix-1: Derivation of First Mode Frequency of SRMReferencesSENSORLESS OPERATION OF SRM DRIVESIntroductionCurrent SensingRotor Position Measurement MethodsRotor Position EstimationReferencesAPPLICATION CONSIDERATIONS AND APPLICATIONSIntroductionReview of SRM Drive Features for Application ConsiderationApplicationsEmerging applicationsReferences