Switched Reluctance Motor Research Articles

A Cost-Effective Phase Current Sensing Scheme Involving Online Error Correction for Switched Reluctance Motor Drive

A Cost-Effective Phase Current Sensing Scheme Involving Online Error Correction for Switched Reluctance Motor Drive

Design and parametric analysis of switched reluctance motor using adaptive FEA for torque ripple reduction

Design and parametric analysis of switched reluctance motor using adaptive FEA for torque ripple reduction

Improved PI-Controller Of Switched Reluctance Motor For Torque Ripple Minimization In Electric Vehicle Applications

Improved PI-Controller Of Switched Reluctance Motor For Torque Ripple Minimization In Electric Vehicle Applications

Adaptive nonlinear current controller for switched reluctance motor torque ripple optimization

This paper deals with torque ripple minimization in SRM through adaptive nonlinear current control while considering saturation. The proposed methodology for SRM speed tracking is based on Indirect Instantaneous Torque Control (IITC). Optimal references are determined offline using the Particle Swarm Optimization (PSO) algorithm. The optimal current profile is generated by using current sharing function (CSF) block. The nonlinear speed and current controllers are developed using Backstepping technique. The proposed control strategy performance is evaluated using a Matlab Simulink model taking into account the saturation phenomena. The obtained results demonstrate that the adaptation of the control angles as well as the peak current minimizes the torque ripples for different operating conditions.

GA and PSO Based Approaches for Fast Optimization of External Rotor Switched Reluctance Motor Design Parameters

GA and PSO Based Approaches for Fast Optimization of External Rotor Switched Reluctance Motor Design Parameters

Determining the Control Parameters of a Switched Reluctance Motor Drive Based on Energy Utilization

Determining the Control Parameters of a Switched Reluctance Motor Drive Based on Energy Utilization

Traction SRM simulation taking into account the radial interaction of the rotor and stator

The article presents the features of traction switched reluctance motors with a diametric closure of the magnetic flux and a “short field”. A computer simulation of a motor with a short field is performed for the ideal location of the rotor inside the stator, as well as for two cases of rotor displacement. The hodographs of the radial interaction forces of the rotor and stator are calculated.

Methods of Rotor Position Sensing for Switched Reluctance Motor – An Overview

Methods of Rotor Position Sensing for Switched Reluctance Motor – An Overview

Genetic Algorithm-Based Commutation Angle Control for Torque Ripple Mitigation in Switched Reluctance Motor Drives

Genetic Algorithm-Based Commutation Angle Control for Torque Ripple Mitigation in Switched Reluctance Motor Drives

An Economical Solar Water Pump With Grid and Battery Backup for Continuous Operation

In this article, the design and control of an efficient solar-powered, reduced-stage water supply system with both grid and battery backup for enhanced reliability are presented. The water pumps with permanent magnet and induction motors have demagnetization and reliability issues under harsh environments. Therefore, a reduced-component four-phase switched reluctance motor drive is utilized to improve the cost-effectiveness and reliability of the system. The back-up battery together with the grid supply will contribute to the uninterruptable power supply of the standalone solar water pump. The provision to feed the solar power back into the grid can offer an additional benefit to the consumers: to earn revenue. A single-phase voltage source converter is employed to preserve the desired power quality at the grid side. In the proposed structure, an intermediate maximum power point tracking dc–dc converter for the solar panel is removed to make the system more compact and efficient. Based on the converter's absence, a new control scheme is developed and presented. MATLAB/Simulink-based simulation is carried out first to validate the developed system and control strategy. The simulation results are further validated through experimental results obtained via a developed prototype.

Построение алгоритма управления с целью повышения энергоэффективности вентильно-индукторного электродвигателя

An energy-efficient switched reluctance electric drive is considered in relation to electric rolling stock. It fully meets such requirements as good adjustment properties, high energy efficiency and operational reliability. The scientific and technical value of the results of the work lies in the development of an algorithm for controlling a traction switched reluctance motor that reduces the operating current while providing the necessary power. The calculations are made by means of specialized programs interacting with each other FEMM and MATLAB. The materials of this study are of practical value for improving the operational and technical and economic indicators of electric rolling stock.

A Control Method of Switched Reluctance Motor Based on Non-unity TSF and Adaptive Overlapping Angle

A Control Method of Switched Reluctance Motor Based on Non-unity TSF and Adaptive Overlapping Angle

Design and analysis of switched reluctance motor with FEM based Ansys-Maxwell

In this study, radial forces that create noise, which is a fundamental problem in Switched Reluctance Motor (SRM), are investigated. Since radial force causes stator vibrations and noise caused by magnetic field, a new switched reluctance motor model with increased stator and rotor poles has been designed in order to reduce the radial force acting on the rotor poles. In addition, a structure with high torque and low leakage flux compared to conventional winding structure has been proposed for Switched Reluctance Motors (SRM). The windings of the designed SRM are placed in layers, insulated from each other. Rotor poles are formed to move on both sides of each phase winding. Thus, the flux that will occur in the phase windings axially completes its circuit from the stator poles and the rotor poles. This designed ARM model has been examined by Finite Element Method (FEM. The proposed motor geometry has been analyzed with ANSYS Maxwell-3D, which performs FEM-based solution), and parametric analysis with ANSYS-RMxprt.

Effect of flight level to maximum power utilization for PEMFC/supercapacitor hybrid uav with switched reluctance motor thruster

In this study, the performance of a fixed-wing PEMFC/SC hybrid UAV with an SRM thruster is investigated by different flight levels. Flight levels negatively affect the PEMFC due to changing ambient conditions such as air temperature and pressure. Hence, the international standard atmosphere (ISA) model for PEMFC voltage-current-power ratings is derived with 100 m intervals for 0–7500 m. The demanded electrical power by UAV increases at high altitudes due to the compressor used for air pressurization of PEMFC. Therefore, a maximum power point tracking (MPPT) model of PEMFC should be utilized in case of overshooting the maximum power level that can be provided. While the main power source of the UAV is PEMFC, the auxiliary power source is SC. The SC is preferred for DC bus voltage stabilization, avoiding maximum power point overshoot, and preventing high instantaneous current that shortens the lifespan of PEMFC. The proposed UAV model is verified at MATLAB/Simulink and the results prove that the system is satisfying.

Application of specialized software for calculation of magnetic field in the turns of switched reluctance motors stator windings

Background: The article describes the process of occurrence of additional losses in the extreme turns of the copper stator windings, based on physical laws. The causes of the skin effect in the stator windings of a switched reluctance motor (SRM) are presented, an assessment of the skin effect influence degree on additional losses in the SRM of medium and high power. 2D-model of the SRM sector in COMSOL Multiphysics software package is created to specify distribution of magnetic field in the SRM stator windings and to quantify the amount of additional losses. А comparison of the magnetic field distribution of the SRM configuration 12/8 obtained in the FEMM program and the SRM magnetic field distribution built in COMSOL Multiphysics software package is presented to assess the reliability of the results.
 Aim: Calculation of the magnetic field distribution in the turns of the stator winding by building a phased 2D-model of the SRM sector (pole division) in COMSOL Multiphysics software package to quantify the amount of additional losses caused by eddy currents in the windings.
 Methods: COMSOL Multiphysics software package is used to build 2D-sector of the SRM. To obtain results on the distribution of electromagnetic fields within the simulated area, finite element methods (FEM) are used to estimate income adjustments, the results are compared with calculations in the FEMM program.
 Results: The patterns of the magnetic field distribution of the SRM obtained in COMSOL Multiphysics software package and in FEMM program confirm the presence of a skin-effect in the extreme turns of the stator winding. It can reduce the energy efficiency of the SRM and cause local overheating of the winding turns. As a result of the simulation, the picture of the magnetic field distribution of the SRM obtained in the FEMM program is similar to the picture of the magnetic field distribution of the SRM obtained in COMSOL Multiphysics software package. Ratio error of the values of the magnetic induction of different parts of the SRM is 37 %. It is acceptable and it indicates the correctness of computer modeling in COMSOL Multiphysics software package.
 Conclusion: The patterns of the magnetic field distribution SRM in COMSOL Multiphysics software package and in the FEMM program confirm the presence of the skin-effect in the extreme turns of the stator winding, which will allow further research in the field of determining the numerical values of additional losses using 2D-model, and proceed from 2D-model to 3D-model of the SRM.

Performance evaluation of a new modular split‐tooth permanent magnet‐assisted switched reluctance motor

AbstractThis study elaborates upon a new modular split‐tooth permanent magnet‐assisted switched reluctance motor (MSTPM‐SRM). In the proposed topology, the stator comprises six modular E‐cores in which the middle poles are split into two teeth. Two permanent magnets (PMs) are placed between each module's middle and side poles. Primarily, the proposed topology is introduced. Next, the principle of operation of the proposed topology are elucidated, and the magnetic equivalent circuit analysis is adopted in order to validate the operational basics. It is proved that the embedded PMs significantly increase the air‐gap's flux density and adjusts the poles' flux density. The flux density distributions, static, and steady‐state characteristics of the proposed MSTPM‐SRM motor and its PMless counterpart are extracted by utilising 2‐D finite element analysis. It is illustrated that the average torque of the proposed MSTPM‐SRM is dramatically increased compared to its PMless counterpart, especially at high excitation currents. Furthermore, the cogging torque analysis is done and it is shown that the proposed structure has approximately zero cogging torque. Finally, a prototyping version of the proposed motor is fabricated, and the experimental results are elicited. It is shown that the experimental results endorse the simulation results.

Design of a 24/16 Outer-Rotor Switched Reluctance Motor with Symmetrical/Asymmetrical Pole Shoes for Performance Improvement

Design of a 24/16 Outer-Rotor Switched Reluctance Motor with Symmetrical/Asymmetrical Pole Shoes for Performance Improvement

A Comparative Study on Different Motors used in Electric Vehicles

Motors are the main part of the drivetrain of electric vehicles (EVs) as they transfer the power of batteries to the axle and tires. Therefore, the performance of batteries is a great concern as loss of energy, or lower torque/speed can cause a negative impact on the performance of EVs. In this regard, this study aimed to study different motors that are used in EVs. These motors include DC motors (brushed and brushless), permanent magnet motor motors (BLDCs), switched reluctance motors (SRMs), induction motors (IMs), and outer rotor motors. This study has performed a rigorous review of past literature to examine different factors (speed, torque, efficiency, flux linkage) that affect the performance of motors in EVs. The results of the study have found that SRMs are the most efficient and reliable motors for use in EVs as they can perform in different conditions and offer benefits of low cost and high efficiency. The study has noted the performance rating of SRM to be the highest (87), while BLDCs, PMSMs, and IMs, showed a performance rating of 75, 85, and 82 out of 100. However, more research is needed in this area to enhance the performance of the motors through the development of a novel motor design to enhance efficiency and reduce cost.

Efficiency Improvement of Electric Vehicles By Using Winding-Less Rotor Based DC Motor

In electric vehicles (EVs), efficient energy consumption is very important. Based on demand, different electric motor technologies are employed by the manufacturers and are still evolving. This paper analyses the electric motors utilized in electric vehicles such as DC motor, Brushless DC (BLDC) motor, AC induction motor, permanent magnet synchronous motor (PMSM), switched reluctance motor (SRM), and permanent magnet synchronous reluctance motor (PM-SynRM). The advantages and disadvantages correspond to traction motors are pointed out. The main drawback is the power losses in the armature windings of the motors that reduce the overall efficiency and reduce the run per charge of EV due to additional power consumption from the battery pack. To reduce these losses, the authors have proposed a system that is more efficient as the windings from the rotor have been replaced by permanent magnets. Therefore, the power losses in armature windings have been eliminated, and reduced the power consumption by the motor from the battery pack, subsequently, the run per charge of EV has been increased. The overall efficiency of EVs has been increased to almost 100% by the proposed system. This claim is supported theoretically, graphically, as well as practically and presented in the results section of the paper. Finally, the conclusions have been made on the traction motors used in the proposed EVs model.

Sensorless Control of the Switched Reluctance Motor Based on the Sliding-Mode Observer

Sensorless Control of the Switched Reluctance Motor Based on the Sliding-Mode Observer