SWITCHED RELUCTANCE MOTOR Research Papers (original) (raw)

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- Engineering, Numerical Method, Physical sciences, Sensorless Control
- by Lionel Vido
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- Engineering, Photovoltaics, Motor Development, Solar Cell

The linear switched reluctance motors (LSRMs) have many benefits such as simple structure, low cost, comparatively high force-to-mass ratio, and no need for mechanical rotary to linear motion converters. However, application of these motors is limited because of their force ripple. In this study, the LSRM is used in vertical motion and a new control strategy is proposed for reducing the force ripple. This method is based on instantaneous control of motor position, speed, phase current, and force. In order to realise the good motion quality of elevator, this study applies a speed profile based on minimum jerk model. Also, a new force distribution function is proposed that can properly distribute the total force among the phases. Using this function, phase currents can properly track the corresponding command currents and then, decrease undesirable ripples of output force considerably. The control system was implemented on a double sided four phase LSRM. Its performance is demonstrated by means of modelling and experimental results in elevator application.

- by Carlos Moron
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- Engineering, Physical sciences, Torque, SWITCHED RELUCTANCE MOTOR

Switched reluctance (SR) machines have several advantages like simple and rugged construction, lighter rotor, lower rotor losses and lower cost. A wind energy conversion system (WECS) with maximum power tracking (MPPT) using a SR machine operating as a generator is presented. MPPT of the wind turbine is achieved by sensing the wind speed and adjusting the wind turbine shaft speed for optimal tip speed ratio. MPPT using Hill Climbing Technique by perturbing the wind turbine shaft speed in the direction of increasing power is also implemented in the hardware setup. Outer speed loop using PI control generates the current reference used by the inner current loop. Hysteresis current control using softchopping is used to control the switched reluctance generator (SRG) phase currents. Initial excitation is provided by a low voltage battery and rated voltage is built-up by self-excitation. A chopper controlled dump resistor is used to maintain the output dc voltage at rated value. Power electronic circuit for the SRG is implemented in hardware using IGBT switches and DSP controller. Wind turbine is emulated using an induction motor and a vector controlled AC drive operating in torque control mode.

- by Nereus F
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- Wind Energy, Switched Reluctance Generator, Maximum Power Point Tracking, Hill Climbing
- by David Dorrell
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- Engineering, Finite Element, Physical sciences, Iron
- by Giuseppe Buja
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- Engineering, SWITCHED RELUCTANCE MOTOR, Speed Control
- by Mehrdad Ehsani
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- Engineering, Optimal Control, Neural Network, Industry

The Switched reluctance Motor (SRM) is an old member of the Electric Machines Family. Its simple structure, ruggedness and inexpensive manufacturing capability make it more attractive for Industrial applications. However these merits are overshadowed by its inherent high torque ripple, acoustic noise and difficulty to control. In this work Design, modeling, simulation and analysis of Switched Reluctance motor has been done. Various models of Switched reluctance Motor Linear and nonlinear model with different control strategies are simulated in MATLAB/SIMULINK. The control strategies used are PI Control, Hysteresis Control and voltage control. The result obtained from simulation has been verified practically. The control signal and circuit design for operation of a Switched Reluctance Motor (SRM) drive has been described. The control circuit has been realized using microcomputer system. The technique developed is suitable for implementation with recent DSP processors. The result obta...

- by Tulasi Ram Das
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- Engineering, Performance Analysis, Industrial Application, Acoustic Noise

AbstractThe converter topology with a minimum number of power devices and control implementations to facilitate the pulsa-tion-free force control of the linear switched reluctance machines are investigated for the first time in this... more

- by Praveen Vijayraghavan
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- Engineering, Control Strategy, Cost Reduction, SWITCHED RELUCTANCE MOTOR
- by David Dorrell and +1
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- Iron, Current Density, Induction Motor, SWITCHED RELUCTANCE MOTOR

The paper presents a novel fixed switching frequency predictive current control method for switched reluctance machines (SRM). The proposed deadbeat predictive current controller accurately predicts the required duty ratio for the PWM pulse for a given reference current in each digital time step over the entire speed range of operation. The pulse width depends on the operating conditions, machine parameters and the rotor position. The controller utilizes the machine inductance profile as a function of current and rotor position to accurately predict the required voltage. The control method is studied through computer simulation and followed by experimental validation. The method is suitable for torque ripple sensitive applications requiring accurate tracking of a given current profile and mitigating the audible noise due to the switching of the inverter.

This paper proposes a new method to minimize torque ripple of a switched reluctance motor (SRM), which is based on the control of the sum of the square of the phase currents by using only two current sensor and analog multipliers. In addition, the sliding mode control (SMC) technique has been applied to SRM speed control loop that compensates the

- by Yilmaz Sozer and +1
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- Electric Power Systems, Sliding mode control, Mathematical Model, Fuzzy Controller
- by Nimit Sheth
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- Engineering, Finite Element Analysis, Physical sciences, Magnetic Properties

The induction motors are widely used in industrial drives since of their low cost and flexibility. The control facet is very essential for any drive. This paper proposes an economical method of INDUCTION MOTOR speed control with efficient performance. The induction motor speed variation can be easily attained for a short range by stator voltage control. The terminal voltage across the stator winding of the motor can be varied to achieve the preferred speed control by controlling the firing angle of the semiconductor power devices (TRIAC in this paper). RASPBERRY PI 2(model B) plays an important in our project. Raspberry Pi is very small in size and it is a low cost device. Raspberry Pi has a Quadcore-broadcom BCM2836 900 MHz processor and 1GB RAM. It can perform all the work similar to a computer and can be referred as minicomputer. Python language must be used for this. It uses Raspbian operating system based on Debian distribution of LINUX.

- by Zhengyu Lin
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- Engineering, Machine Learning, Gastroenterology, Adaptive Control

The simplicity of photovoltaic motors makes them ideal candidates for fully autonomous applications requiring thousands of operating hours without maintenance, like water pumping. Photovoltaic motors use photovoltaic cells optically commutated by a shutter driven by the motor rotor to convert light energy into mechanical energy, without the need of any brushes or other power electronics. With the decrease of photovoltaic cells price, photovoltaic motors could be more affordable and reliable than conventional systems, and therefore particularly well suited for off-grid applications. The concept has been patented under various forms, but the scientific literature is so far very scarce. In this article, we attempt to classify photovoltaic motors, and to explain in details their physical working principle. Then we compare the different architectures by defining two pre-design factors linked to the system maximal output power. Finally, we report first experimental results on a photovoltaic switched reluctance motor (PV SRM) prototype using a 6/4 switched reluctance machine and 12 photovoltaic cells.

- by Loïc Quéval
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- Photovoltaics, Motor Development, Solar Cell, Literature Review
- by Jan Anthonis
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- Energy Consumption, Design process, Virtual Prototyping, ICT Integration model

The integrated starter-generator (ISG) replaces both the conventional starter and alternator (generator) of an automobile in a single electric device. It allows greater electrical generation capacity and the fuel economy and emissions benefits of hybrid electric automotive propulsion. The ISG requires contrary specifications, i.e. a high starting torque and a field-weakening capability in a wide speed range, therefore its design is a challenging job. In this paper the basic characteristics and some of the ISG variants will be discussed. Also a switched reluctance machine (SRM) based ISG prototype will be presented in detail.

This paper presents a comparison of soft and hard
chopping on an 8/6 SRM in terms of noise, vibration and
harshness. Transient-state measurements are used to plot speedfrequency
signatures of current, vibration and acoustic noise of
the SRM for different load torques. With this technique speedrelated
frequencies can be distinguished from resonance
frequencies, and therefore, more information can be extracted
from the plots. The results show that hard chopping increases the
loudness of acoustic noise compared to soft chopping, with a
frequency shift to higher values. This however leads to an
attenuation of the vibration and noise amplitudes at the most
critical resonance of the SRM, situated at a relatively low
frequency.

- by Yves Mollet and +1
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- Electrical Engineering, Noise, Vibration and Harshness (NVH), SWITCHED RELUCTANCE MOTOR
- by Dries Verstraete
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- GAS TURBINE, Technology development, High Speed, Three Dimensional

A Matlab/Simulink/SRDaS environment to simulate a 6/4-Switched Reluctance Motor is presented in this paper. The proposed simulation model of the Switched Reluctance Motor for its linear inductance profile is instigated. All simulations are completely documented by their block diagrams and corresponding Matlab functions. The developed simulation model results were compared with SRDaS software packaged SRM model and its performance were analyzed.

- by KARTHIKEYAN VASUDEVAN
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- SWITCHED RELUCTANCE MOTOR

This thesis is concerned with the design and analysis of Switched Reluctance Motor (SRM) and its improved structure Double Stator Switched Reluctance Motor (DSSRM). Three configurations of SRM viz. Inner Stator, Outer stator and Double Stator are designed and simulated in ANSYS Maxwell Suite. Design parameters are chosen by aiming optimum performance of motor after literature review and analytical study of the motor. SRM is not a line start machine, so power converter circuit is required to excite the motor. Without proper switching of current, desired torque is not obtained in SRM. The converter circuit and switching unit is built in Maxwell Circuit Editor Tools. Both magnetostatics and transient analysis is performed to investigate motion torque, torque ripple, normal force and radial force. A good comprehensive comparison of three different types of SRMs based on their torque profile and force densities is presented. Simulation performed verified better performance of DSSRM.

- by Jafar Milimonfared and +1
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- Hybrid Vehicle, Electric Motor, Steady state, Electric Vehicle
- by Mohammad Nasser Hashemnia
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- Electric Motor, Brushless DC Motor, Electric Vehicle, Fuel Consumption
- by Murat Ayaz
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- Vehicle Dynamics, Linear Model, Equivalent Circuit, Steady state
- by Shyam Ramamurthy
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- Engineering, Design process, Electric Propulsion, Copper
- by Tomy Sebastian
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- Engineering, Radiation Detectors, Mathematical Model, Pulse Width Modulation
- by Mahir Dursun
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- Boost Converter, SWITCHED RELUCTANCE MOTOR, Centrifugal Pump
- by David Torrey
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- Engineering, Energy Conversion, Power Control, SWITCHED RELUCTANCE MOTOR
- by Paulo Branco
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- Aerospace Engineering, Dynamic programming, Linear Model, Dynamic Simulation
- by Syed Hossain
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- Energy Conversion, APEC, Control Strategy, Optimal Control Problem
- by Nerey Mvungi
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- Sr, Sensorless Control, SWITCHED RELUCTANCE MOTOR

Switched reluctance motor is acquiring major attention because of its simple design, economic development, and reduced dependability. These attributes make switched reluctance motors superior to other variable speed machines. The major challenge associated with the development of a switched reluctance motor is its high torque ripple. Torque ripple produces noise and vibration, resulting in degradation of its performance. Various techniques are developed to cope with torque ripples. Practically, there exists not a single mature technique for the minimization of torque ripples in switched reluctance motors. In this research, a switched reluctance motor is modelled and analysed. Its speed and current control are implemented through artificial neural networks. Artificial neural network is found to be a promising technique as compared with other techniques because of its accuracy, reduced complexity, stability, and generalization. The Levenberg–Marquardt algorithm is utilized in artificial neural networks due to its fast and stable convergence for training and testing. It is found from research that artificial neural network-based improved control shows better performance of the switched reluctance motor. Realization of this technique is further validated from its mean square error analysis. Operating parameters of the switched reluctance motor are improved significantly. Simulation environment is created in Matlab/Simulink.

- by Iqra Tariq and +1
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- Power Electronics, Electric Power Systems, Artificial Neural Networks, SWITCHED RELUCTANCE MOTOR

Aircraft applications require high reliability, high availability, and high power density, while aiming to decrease weight, complexity, fuel consumption, operational costs, and environmental impacts. Modern electric driving systems can meet these demands and provide significant technical and economic enhancements over traditional mechanical, hydraulic, or pneumatic systems. Due to the high reliability of Switched Reluctance Motors (SRMs), it can be used for aircraft electromechanical actuators to replace the conventional actuators. This paper presents Model Predictive Control (MPC) for the actuators system to drive flight control surfaces in modern civil aircraft. In this study, the actuators system with nonlinear SRM is modeled, simulated, and controlled using a predictive control technique. The predictive control algorithm is applied for a three-phase controlled rectifier to provides a fixed DC voltage for actuators supply bus, and for SRM's symmetrical power converter to drive the surface of the actuator. The performance of the proposed system is tested using a simulation model in PSIM software, and the controller is programmed using C language. Obtained results confirm the effectiveness of the suggested system to drive aircraft electromechanical actuators satisfactorily for either tracking demanded motor speed or desired actuator deflection angle.

- by Reyad Abdelfadil and +1
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- Model Predictive Control (MPC), SWITCHED RELUCTANCE MOTOR, More Electric Aircraft, Aircraft Electrical Actuators
- by Bimal Bose
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- Engineering, Control system, Feedback loop, SWITCHED RELUCTANCE MOTOR
- by Loránd Szabó and +1
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- Numerical Analysis, Finite element method, Electric Drive, SWITCHED RELUCTANCE MOTOR
- by Mostafa I Marei and +1
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- Power System, Computer Aided Design, Dynamic Simulation, Electromagnetic Transients

This paper presents a design and development of 8/6 switched reluctance motor for small electric vehicle using analytical method. The absent of permanent magnet, inherent fault tolerance capabilities, simple and robust construction make this motor become more attractive for small electric vehicle application such as electric scooter and go-kart. The switched reluctance motor is modelled using analytical formula in designing process. Later, the designed model is analyzed using ANSYS RMxprt software. In order to achieve 5kW power rating and to match with the design requirement, the switched reluctance motor model has been analyzed using RMxprt tools for the preliminary parameters design process. This tools is able to predict the output performance of motor in term of speed, flux linkage characteristic, output torque and efficiency.

The Switched Reluctance Machine (SRM) is ideal for safety critical applications (aerospace, automotive, defense, medical, etc.) where it is desirable that the electrical drive system to be fault tolerant. During the design of a fault tolerant electrical drive system it is indispensable to use advanced simulation techniques. Finite elements method (FEM) based magnetic field computation programs are the most precise tools in simulating the electrical machines. These programs must be embedded in a general simulation platform. The paper deals with the analysis of a proposed SRM's fault tolerant capacity. The study was performed by means of a coupled simulation program. The main program was built up in Simulink ® , the most widely used dynamic system simulating platform. The SRM was modeled using the Flux 2D FEM based numerical field computation program. The machine's model was connected to the main program thru the Flux-to-Simulink link. This co-simulation technique proved to be a very useful tool in the fault tolerance study of the proposed SRM.

- by Manojkumar S
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- Electrical Engineering, Machines, SRM, SWITCHED RELUCTANCE MOTOR
- by M. Benbouzid
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- Engineering, Technology, Comparative Study, Electric Motor
- by Wanderlei Marinho da Silva and +1
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- Fuel Cell, Electric Vehicle, SWITCHED RELUCTANCE MOTOR, Proton Exchange Membrane Fuel Cell
- by Daniel Fodorean
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- Engineering, Finite element method, Fuel Cell, Genetic Algorithm

A new dual rotor mutually coupled switched reluctance machine (DR-MCSRM) is proposed. The proposed machine has a magnetic circuit similar to the full pitched mutual coupled switched reluctance machine (FP-MCSRM) without short end windings. FP-MCSRMs have higher torque and power density, but they have longer end windings leading to unwanted copper loss. The construction of the proposed machine is similar to the merging version of the outer rotor and inner rotor FP-MCSRMs. An example machine is designed to meet specifications developed for automotive applications. A finite element model is developed and the machine is optimized to meet the performance targets. The machine performance is compared with a FP-MCSRM designed for the similar specifications.

This work aimed to develop a parameterized, two-dimensional field model of a switched reluctance motor (SRM). The main task of the developed model was to calculate the value of the electromagnetic torque for various positions of the rotor. Based on these calculations, the characteristics of the electromagnetic torque were determined depending on the position of the rotor angle φ for the current function I (T = f (φ, I)). Using the model, it was possible to additionally observe the phenomena occurring in the motor winding, e.g., distributions, isolines of magnetic potential, induction, and to calculate the values of the temperature. The parameterized structural elements that made up the entire model can be freely changed and, thus, the results for various structures can be obtained. Thanks to this, it was possible to evaluate and compare motor of different designs. To validate the model, measurements were conducted on real-scale reluctance motors, and families of electromagnetic torq...

- by Hubert Cichecki
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- Electricity, Electrical Motors, Ansys, Ansys Simulation

The subject of the paper is focused on the analysis of a 30kW switched reluctance machine for propulsion of electrical vehicle propulsion (EV). The paper details the fundamental steps when developing such an electrical machine, and validates the structure using co-simulation procedures, coupling finite element analysis software (Cedrat Flux2D) with software used to implement the controller (Matlab/Simulink). As the advantages of the SRM are already known, the torque ripples are its main disadvantages. These are reduced as much as possible using a dedicated control strategy, the torque sharing functions (TSF). The solution offered by the paper highlights the possibility of using a cheap, reliable and robust electrical machine for propulsion unit.

The goal of the paper is to analyse the performances of switched and synchronous reluctance machines, designed to be used in light electric propulsion. Both machines are designed with the same ratings and their behaviour is studied by means of finite element analysis and complex MATLAB/Simulink simulation programs. The task is to highlight the benefits and drawbacks of each machine in respect to efficiency, control and torque ripple. Hence, for each machine a simple basic control strategy is used to validate the structure, and, then, a more advanced strategy is applied to improve the performances of the system. The results of this study are aimed at contributing to find, design and optimize electric machines for vehicle propulsion applications.