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Journal ArticleDOI

Development of Analytical Models for Switched Reluctance Machine and their Validation

01 May 2015-Journal of Electrical Engineering & Technology (The Korean Institute of Electrical Engineers)-Vol. 10, Iss: 3, pp 990-1001
TL;DR: In this article, a geometry-based analytical model of the SRM drive system is presented and a prototype of microcontroller based SRM is constructed for validating the analysis and the results are reported.
Abstract: This paper presents analysis of Switched Reluctance Machine (SRM) using Geometry Based Analytical Model (GBAM), Finite Element Analysis (FEA) and Fourier Series Model (FSM) with curve fitting technique. Further a Transient Analysis (TA) technique is proposed to corroborate the analysis. The main aim of this paper is to give in depth procedure in developing a Geometry Based Analytical Model of Switched Reluctance Machine which is very accurate and simple. The GBAM is developed for the specifications obtained from the manufacturer and magnetizing characteristic of the material used for the construction. Precise values of the parameters like Magneto Motive Force (MMF), flux linkage, inductance and torque are obtained for various rotor positions taking into account the Fringing Effect (FE). The FEA model is developed using MagNet7.1.1 for the same machine geometry used in GBAM and the results are compared with GBAM. Further another analytical model called Fourier Series Model is developed to justify the accuracy of the results obtained by the methods GBAM and FEA model. A prototype of microcontroller based SRM drive system is constructed for validating the analysis and the results are reported.
Citations
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Journal ArticleDOI
30 Sep 2019
TL;DR: A Método Analítico Eficiente para o Cálculo das Indutâncias em Máquinas de Relutância Variável com Núcleo do Tipo C Efficient Analytical Method for the Inductance Calculation of the C-Core Switched Reluctance Machine
Abstract: 277 Método Analítico Eficiente para o Cálculo das Indutâncias em Máquinas de Relutância Variável com Núcleo do Tipo C Efficient Analytical Method for the Inductance Calculation of the C-Core Switched Reluctance Machine Leonardo P. F. Gomes Filho, Vanessa S. de C. Teixeira, Adson B. Moreira, Tárcio A. dos S. Barros, Ernesto Ruppert Filho MÉTODO ANALÍTICO EFICIENTE PARA O CÁLCULO DAS INDUTÂNCIAS EM MÁQUINAS DE RELUTÂNCIA VARIÁVEL COM NÚCLEO DO TIPO C

1 citations


Cites background from "Development of Analytical Models fo..."

  • ...Diferentes MAs são apresentados em [10], [11] e [12] para o cálculo das características de saída do motor de relutância variável de fluxo radial nas posições alinhada e desalinhada....

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Proceedings ArticleDOI
05 May 2022
TL;DR: In this article , a geometry-based analytical model of 4-phase 8/6 and 3-phase 6/4 SRM configurations with a power rating of 1kW is developed.
Abstract: Switched Reluctance Motor (SRM) is gaining popularity in the vehicle industry due to its robust construction. SRM is a popular choice for EV applications due to its magnet-free structure, fault tolerance, and high power/ torque density. The main goal of this work is to create an efficient SRM-based electric power train for a 3-wheeler application. The tractive force and the power requirement of the electric motor for this application are calculated. A geometry-based analytical model of 4-phase 8/6 and 3-phase 6/4 SRM configurations with a power rating of 1kW are developed. The results obtained from the analytical model are compared with the Finite Element Analysis (FEA) model of the same power rating. The performance metrics such as power density, torque density, mass, and maximum torque developed are estimated and the results are summarized. The electromagnetic design tool MagNet is used to derive the static and transient characteristics of the SRM configurations, and the findings are reported. Modal analysis is performed to investigate the deformation of SRM configurations corresponding to various natural frequencies using a multi-physics design tool-Ansys.
References
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Reference BookDOI
R. Krishnan1
28 Jun 2001
TL;DR: In this article, the authors present an analytical method for the computation of machine characteristics, such as Inductance and Rotor Position vs. Excitation Current Comparison of Measured, Analytic and Finite Element Results.
Abstract: 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

1,457 citations


"Development of Analytical Models fo..." refers background in this paper

  • ...The SRM is highly non-linear in nature due to its doubly salient structure, magnetic characteristics and coupled relationship among rotor position, phase current and flux linkage [2]....

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Book
01 Aug 1993
TL;DR: This paper presents a meta-modelling framework for computer-aided design of the power-electronic controller and some examples show how this approach can be applied to motor design.
Abstract: Introduction 1. Energy conversion principles 2. Motor design 3. Dynamic operation 4. Computer-aided design 5. The power-electronic controller 6. Control strategies 7. Losses and cooling 8. Applications 9. Example design 10. Tests and measurements References Index

1,263 citations


"Development of Analytical Models fo..." refers background in this paper

  • ...Besides being simple and robust, the absence of windings and magnets on the rotor in a Switched Reluctance Machine (SRM) makes it suitable for variable speed applications [1]....

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Journal ArticleDOI
TL;DR: How the switched reluctance generator (SRG) converts energy as directed by a controller is discussed, and the implications of the energy conversion process on how the SRG is controlled are identified.
Abstract: This paper discusses how the switched reluctance generator (SRG) converts energy as directed by a controller. Beginning with a review of the electromechanics of generation, the paper identifies the implications of the energy conversion process on how the SRG is controlled. The structure of the SRG controller for speed-control and power-control applications is discussed. Practical implementation details for commutation of the SRG are reviewed. Concepts are illustrated with a 6-kW SRG designed to serve as a starter/alternator in automotive applications.

332 citations


Additional excerpts

  • ...Therefore torque generated is also negative [11]....

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Journal ArticleDOI
A. Radun1
TL;DR: In this article, an analytical model for the unaligned inductance of the switched reluctance motor is presented. But the model is useful only for the case where the rotor poles do not overlap and its iron does not saturate.
Abstract: This paper develops an analytical model for the unaligned inductance of the switched reluctance motor. The analytical model is useful as long as the machine's stator and rotor poles do not overlap and its iron does not saturate. Iron saturation is almost never experienced when the rotor is in the unaligned position for practical winding currents. This paper expands on results presented previously to include the contribution to the unaligned inductance of the flux in both the stator slot and the rotor slot. The approximations that are inherent to the analytical model are stated, and a detailed development of the model is provided. Finally, the paper compares predictions of the unaligned inductance computed by the analytical model to those obtained by finite-element analysis for three different machines with different pole counts and rotor diameters.

131 citations

Journal ArticleDOI
TL;DR: In this paper, the establishment and control for a switched-reluctance generator (SRG) are presented, and the power circuit components are properly designed to minimize the DC-link voltage ripples caused by commutation and pulsewidth modulation switching.
Abstract: The establishment and control for a switched-reluctance generator (SRG) are presented in this paper. First, the switching behavior and the DC-link ripple characteristics of a SRG are studied. Accordingly, its circuit and control models are established. And the power circuit components are properly designed to minimize the DC-link voltage ripples caused by commutation and pulsewidth modulation switching. Second, the quantitative voltage feedback control of the SRG system considering the effects of voltage ripples is made. In this issue, a unified approach is developed to estimate the plant dynamic model parameters from measurements. Then conversely, the feedback controller is designed according to the prescribed regulation voltage control specifications. Third, a dynamic commutation shift controller (DSC) is devised to enhance the voltage control performance of a SRG. As the voltage feedback control is failed when winding current becomes single-pulse mode, the proposed DSC is actuated automatically. The turn-on and turn-off angles are dynamically and automatically shifted to assist voltage feedback regulation control. More stable and better regulation control performance can be obtained. Finally, the energy conversion efficiency improvement via static commutation shift under static operation is evaluated experimentally. Theoretical bases of the proposed control approaches are derived, and their effectiveness is demonstrated by some simulation and measured results.

106 citations


Additional excerpts

  • ...Hardware model [12] is developed to validate the inductance at the aligned and un aligned positions The complete block diagram of the experimental set up is shown in Fig....

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