R. Karthikeyan

Switched Reluctance Motor Modeling, Design, Simulation, and Analysis: A Comprehensive Review

Switched reluctance machines have emerged as an important technology in industrial automation; they represent a real alternative to conventional variable speed drives in many applications. This paper reviews the technology status and trends in switched reluctance machines. It covers the various aspects of modeling, design, simulation, analysis, and control. Finally, it discusses the impact of switched reluctance machines technology on intelligent motion control.

Two dimensional magnetic and thermal analysis of high speed switched reluctance motor using soft magnetic composite material

In aircraft electric motor driven fuel delivery system, the motor must be characterized by high power density, reliability, less size, less weight and high speed. The high speed operation, fault tolerance, high power density makes switched reluctance motor an ideal candidate for high speed aerospace applications. This paper investigates the application potential of soft magnetic composite material (SOMALOY 500) in high-speed switched reluctance motor. Two configurations (1) all sheet metal (2) all Soft magnetic composite have been studied using finite element analysis to obtain their magnetic and thermal characteristics. The study reveals that the all soft magnetic composite configuration albeit suffers from poor average torque, digress in torque-to-weight ratio from conventional model is not very much and the temperature distribution estimation reveals that the all soft magnetic composite model has better thermal capabilities which makes it a viable alternative in high speed aerospace applications.

Influence of Soft Magnetic Composite Material on the Electromagnetic Torque Characteristics of Switched Reluctance Motor

This paper presents some aspects of soft magnetic composite (SMC) material application in switched reluctance motor (SRM). The presented stator core of the SRM is made of two types of material, the classical laminated silicon steel sheet and the soft magnetic composite material. First, the stator core made of laminated steel has been analyzed. The next step is to analyze the identical geometry SRM with the soft magnetic composite material, SOMALOY 500 for its stator core. The comparisons of both cores include the calculated average torque and torque ripple and then the means of improving average torque though geometrical modification in SMC stator cored SRM. The finite element method has been used to analyze the magnetic conditions and to calculate the average torque.

Dynamic analysis of Switched Reluctance Motor using Soft Magnetic Composite material

Soft Magnetic Composite (SMC) material is formed by surface-insulated iron powder particles, generating unique properties like magnetic and thermal isotropy, and very low eddy current loss. This paper delineates the key aspects of soft magnetic composite (SMC) material application in Switched Reluctance Motor(SRM), through dynamic magnetic characterization using Switched Reluctance Design and Simulation software (SRDaS). Three types of switched reluctance motors have been analyzed: (i) Motor with M19 steel, (ii) Motor with SMC500, and (iii) Motor with SMC1000. The comparative analysis is based on the magnetic properties and the calculated parameters of each motor model. The studied electromagnetic parameters are flux linkage, current and the electromagnetic torque.

Design and analysis of a switched reluctance generator for rural electrification in stand alone wind energy coversion system

This paper addresses the need for the exploration of utilization of maintenance free electric machines in non-conventional energy conversion systems. In stand alone wind energy conversion system meant for rural areas, cost effective and maintenance free electric machine as generator is envisaged to be an integral part of the system. The suitability of switched reluctance machine as generator for stand alone rural wind energy conversion system has been explored through design and analysis. The design equations, selection of pertinent topology, static and transient magnetic characteristics and study of thermal and vibration characteristics has been presented. Finite element analysis has been extensively used to refine as well as to analyze the finalized design.

Coupled field finite element analysis of switched reluctance motor with soft magnetic composite material for thermal characterization

This paper describes a more precise technique for thermal analysis due to joule heat loss in switched reluctance motor with soft magnetic composite material (SMC) by two dimensional (2-D) coupled field finite element analysis. The finite element model is solved in tandem by a cascaded procedure comprising electromagnetic and thermal analysis. The results of the coupled field finite element analysis of two configurations viz (a) Switched reluctance motor made of lamination sheet steel (SRM-M19) and (b) Switched reluctance motor made of soft magnetic composite material (SRM-SMC) are presented.

An Investigation into Vibration in High Speed Switched Reluctance Motor with Soft Magnetic Composite Material

In aircraft electric motor driven fuel delivery system, the motor must be characterized by high power density, reliability, less size, less weight and high speed. The high speed operation, fault tolerance, high power density makes switched reluctance motor an ideal candidate for high speed aerospace applications. This paper investigates the application potential of soft magnetic composite material (SOMALOY 500) in high-speed switched reluctance motor. Two configurations all (1) sheet metal with smooth frame and ribbed frame (1) all soft magnetic composite material with smooth frame and ribbed frame have been studied using finite element analysis to obtain their mode shapes and mode frequencies. The study reveals that the all soft magnetic composite configuration albeit suffers from poor average torque has lesser vibration of stator that may result in low acoustic level a desirable feature in high speed aerospace applications.

Torque-to-weight ratio improvement with soft magnetic composite material in high speed switched reluctance motor

In aircraft electric motor drive fuel delivery system, the motor must be characterized by high power density, reliability, less size, less weight and high speed [1]. The high speed operation, fault tolerance, high power density makes switched reluctance motor an ideal candidate for high speed aerospace applications. This paper investigates the application potential of soft magnetic composite material (SOMALOY 500) characterized by three dimensional ferromagnetic behavior, very low eddy current loss, flexible machine design and assembly in high-speed switched reluctance motor. Two configurations (i) all sheet metal (ii) all Soft magnetic composite have been studied using finite element analysis to obtain their magnetic characteristics. The weight of active parts has been evaluated for the two configurations to determine torque-to-weight ratio. The study reveals that the all soft magnetic composite configuration albeit suffers from poor average torque, digress in torque-to-weight ratio from conventional model is not very much which makes it a viable alternative in high speed aerospace applications.

Time-stepping analysis of a switched reluctance generator by coupling electric circuit and electromagnetic finite element method

This paper presents a more precise approach for static electromagnetic characterization of the variable speed switched reluctance generator (SRG) for application in the wind energy conversion system. The circuit-coupled two-dimensional finite element method (FEM) [2] for magnetic characterization of switched reluctance generator is presented. This approach yields more accurate results for a low speed switched reluctance generator with multiplicity of four. The magnetic characteristics such as flux linkage characteristics, inductance profile and torque profile have been obtained in a more accurate manner using this approach.

Study on switched reluctance generator for rural electrification

This paper addresses the need for the utilization of cost effective, maintenance free electric machines in stand alone wind energy conversion system meant for rural areas. The suitability of switched reluctance machine as generator for stand alone rural wind energy conversion system has been explored through design and analysis. The design procedure, selection of pertinent topology, static and transient magnetic characteristics has been presented. Finite element analysis has been extensively used to refine as well as to analyze the finalized design.