The switched reluctance motor drive system structure is simply introduced firstly in this paper, and then the research progress of it is summarized, including the switched reluctance motor design. This doublysalient arrangement is very effective for electromagnetic energy conversion. Pdf the switched reluctance motor srm is an old member of machine family. The name vector control originates from the basic principle of this type of. Van duijn, development of methods, algorithms and soft wares for optimal design of switched reluctance drives 2 f. Costa branco, simulation of a 64 switched reluctance motor based on matlabsimulink environment 3 r krishnan, switched reluctance motor drives. Ppt reluctance motors powerpoint presentation free to. To develop positive torque, the currents in the phases of a srm must be to the rotor position. Srms are gaining much interest because of their simplicity in structures, highoutput power, high starting torque, wide speed range, rugged and robust construction, reliability, and low manufacturing costs, which make these machines viable for many applications. Jul 30, 2017 a reluctance motor is a type of electric motor that induces nonpermanent magnetic poles on the ferromagnetic rotor. Reluctance motor technical seminar report annual year 2014, electrical and electronics department, sdmt, ujire574240 page 4 chapter 2 switched reluctance motor 2. The switched reluctance motor srm represents one of the oldest electric motor designs around. Analysis of the switched reluctance motor srm parameters pavol rafajdus ivan zrak val eria hrabovcov a in the paper the model for analysis of the switched reluctance motor srm parameters is described.
Switched reluctance motor srm drives are simpler in construction compared to induction and synchronous machines. Reluctance motors can deliver high power density at. In addition, a sixslot, tenpole 610 srm with a sixphase winding configuration under the twomode bipolar excitation is optimized by solving a. This design is known as a 64 sr motor, and operates with 3 phases. Switched reluctance generators in contrast to wellknown conventional generators switched reluctance generator srg have toothed stator and rotor, and have neither windings nor permanent magnets in the rotor. The reluctance motor has basically two main parts called stator and rotor. Design of switched reluctance motor for electric vehicle powerpoint ppt presentation.
In the last years, the switched reluctance machines srms have been the subject of significant developments. Isbn 97895352677, eisbn 97895352684, pdf isbn 9789535147848, published 20170621. The results include a detailed comparative analysis of the performance values of various modes of the developed synchronous reluctance motor and the series induction motor of the same power made. Pdf a switchedreluctance motor for aerospace application. Switched reluctance motor srm free download as powerpoint presentation. For their operation the excitation unit which is controlled in accordance with the rotor angle position is necessary. Geometrical design equations and practical challenges are investigated. We know about different types of synchronous motors, apart from all these motor works based on reluctance. A variation on the conventional reluctance machine has been developed and is known as the switched reluctance sr machine. A simulation model for the fourphase switchedreluctance.
Unlike a conventional synchronous motor, both the rotor and stator of a switched reluctance motor have salient poles. Book switched reluctance motor drives pdf download m. Basically its kind of a stepper motor which rotates. Because they require a power electronic converter and controller to function, however. Model the dynamics of switched reluctance motor simulink. The first reference to the term switchedreluctance was made by nasar in a paper in the iee proceedings in 1969. Simulation and testing of a switched reluctance motor by matlab simulink and dspace master of science thesis in electric power engineering saman abbasian department of energy and environment faculty of electric power engineering chalmers university of technology goteborg, sweden, 20.
Abstract the generated torque ripple and acoustic noise in switched reluctance motors srm can be considered as one of the major disadvantages of the motor. Cox entitled a simulation model for the four phase switched reluctance motor. Switched reluctance motor srm is gaining much interest in industrial. These converters are rdump, cdump, cdump with freewheeling transistor, asymmetric, series, and parallel type.
With continued research, different topologies have emerged presenting less torque ripple, high. Unlike common brushed dc motor types, power is delivered to windings in the stator case rather than the rotor. Pdf controlling of switched reluctance motor drives researchgate. The following figure shows the ideal waveforms phase a inductance and current in a 64 srm.
As such, research has blossomed during the last decade, and the srm and variable drive systems using srms are receiving considerable attention from industry. The inductances l, linkage ux, and torque t are calculated on the basis of geometrical dimensions and bh curves of the material. Pdf efficiency analysis of synchronous reluctance motors. The reluctance motor is a type of synchronous machine. The switched reluctance motor srm is an electric motor in which torque is produced by. The rotor is basically a piece of laminated steel and its shape forms salient poles. Switched reluctance motors the structure of a switched reluctance motor is shown below. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Krishnan written the book namely switched reluctance motor drives author r. I am submitting herewith a thesis written by james t. Inductance profile of 5 sections for the motor versus translator position iii. Stator teeth are electromagnets, rotor is a piece of iron shaped in a way so it creates magnetic reluctance paths that is able to create torque to rotate the rotor given. As the torque produced in the switched reluctance motor drive is independent of the excitation current polarity. Switched reluctance motor with 16 stator poles and 12 rotor teeth.
Switched reluctance motor the switched reluctance motor. Switched reluctance motor drives study material download. Design considerations of switched reluctance motors with. Torque per unit volume equations are obtained for each of the motor, related to quantities such as magnetic flux density and electric loading and the speed performances are. Switched reluctance motor drives the name switched reluctance has now become the popular term for this class of electric machine. Design of linear switched reluctance motor driver for. It has wound field coils of a dc motor for its stator windings and has no coils or magnets on its rotor. When you use these presets, you do not need to specify the. The rotor has neither windings nor permanent magnets. Jan 25, 20 a closer look at switched reluctance motors. Switched reluctance motor for electrical drives offor. Switched reluctance motor concept, control and applications. Switched reluctance motor srm the switched reluctance motor srm is a type of motor doubly salient with phase coils mounted around diametrically opposite stator poles. It works on the same principle as for stepper motor.
Switched reluctance motor srm synchronous reluctance. Smooth transition between optimal control modes in switch reluctance motor by badal patnaik 1001227260 sanjit debta. In 2014 presented the study on determination of a unique of turnon and turnoff angeles that gives optimum. Find powerpoint presentations and slides using the power of, find free presentations research about synchronous reluctance motor ppt. There are no windings or permanent magnets on the rotor. The switched reluctance machine was the first electric motor to have been designed but until the recent two decades hasnt been successfully implemented. The stator and rotor in a sr motor have salient poles. The reasons deal primarily with controller and power switching components. Reluctance motors can deliver high power density at low cost, making them. The torque ripple is an inherent drawback of switched reluctance motor drives.
Motor runs at slip speed reluctance torque, trel reluctance torque, trel maximum reluctance torque, trelmax occurs at. The switched reluctance motor srm is a type of stepper motor, an electric motor that runs by reluctance torque. Synchronous reluctance machine design 1 1 introduction the purpose of this report is to present information necessary for developing a suitable synchronous reluctance motor synrm rotor geometry design procedure. The paper also introduced why the asymmetric bridge converter type is the best one especially for high speeds. With continued research, different topologies have emerged presenting less torque ripple, high efficiency, high. Ppt switched reluctance motors powerpoint presentation, free. Here we will discuss construction and working principle of reluctance motor.
The switched reluctance motor srm is an electric motor which operates on reluctance torque. The results include a detailed comparative analysis of the performance values of various modes of the developed synchronous reluctance motor and. Set to 64 default to specify a threephase 64 motor set to 86 to specify a fourphase 86 motor set to 108 to specify a fivephase 108 motor set to 64 60 kw preset model, 86 75 kw preset model, or 108 10 kw preset model to use a predetermined specific model of a switched reluctance motor. Characteristics and work principles of switched reluctance. Pdf an equivalent circuit model for switched reluctance motor. Studying different types of power converters fed switched.
A diagram of a switched reluctance motor is shown in fig. The first reference to the term switched reluctance was made by nasar in a paper in the iee proceedings in 1969. The stator poles have concentrated winding rather than sinusoidal winding. A reluctance motor is a type of electric motor that induces nonpermanent magnetic poles on the ferromagnetic rotor. Ppt power electronics powerpoint presentation free to. Switched reluctance motorgenerator technology kaskod. The switched reluctance machine srm is the least expensive electrical machine to produce, yet one of the most reliable. A switched reluctance motor works by using phenomenon called magnetic reluctance that creates force in a magnetic circuit toward the smallest magnetic resistance.
Reluctance motors an induction motor with a modified squirrelcage rotor singlephase or threephase rotor turns in synchronism with the rotating magnetic flux a free powerpoint ppt presentation displayed as a flash slide show on id. Reluctance motors an induction motor with a modified squirrelcage rotor single phase or. Pdf books download book switched reluctance motor drives by r. Simulation and testing of a switched reluctance motor by.
A simulation model for the fourphase switchedreluctance motor. Srm differs from dc motor in that mechanical motion is produced by stator windings instead. The switched reluctance motor srm, a stepper motor powered by reluctance power, is a motor which runs on electricity. Permanent magnet synchronous motor 17 switched reluctance sr motor. It is mainly due to frequent switching of phases for rotation of the motor and changes of the air gap length between the rotor and stator teeth. The rotor is created from lamination in order to minimize the eddycurrent losses. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. It generates torque through magnetic reluctance reluctance motor subtypes include synchronous, variable, switched and variable stepping.
This greatly simplifies mechanical design as power does not have to be delivered to a moving part, but it complicates. The number of poles presence on the stator depends on the number of. In this chapter, various srm topologies, design, principle of operation, and. The placement of the stator windings to linear switched reluctance motor. 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. The switched reluctance sr motor is very different from the other polyphase machines described because stator and the rotor have salient poles characteristics and work principles of switched reluctance sr motor see more. An important point can be seen in the motor diagram. Switched reluctance sr motor is a brushless ac motor. The simulation results are made by matlabsimulink package. View and download powerpoint presentations on synchronous reluctance motor ppt.
Electrical drives structure of electric power plants. Their combination with power electronic controllers may yield an economical solution. To achieve this a suitable theoretical model is essential, thus a simple but complete motor model is developed. Srm drives require only one power switch per phase winding, for example. Switched reluctance motors powerpoint ppt presentation. Because of the double salience construction of the. Torque is generated through the phenomenon of magnetic reluctance. The phasetophase switching logic can only be realized by using the semi converter device. A stepper motor is designed to make it suitable for open loop position and. Apr 02, 2014 the torque ripple is an inherent drawback of switched reluctance motor drives.
Basically its kind of a stepper motor which rotates through a step angle when. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Switched reluctance motor for electrical drives offor electrical drives electric power plants equipment vladimir kuzmichev mpeitu, orgres. The stator winding is comprised of a set of coils, each of which is wound on one pole. I have examined the final electronic copy of this thesis for form and content and recommend tha t it be accepted in partial fulfillment of the requirements for the degree of master of. Development strategy of rao ues russia main purposes and stages of the project. This greatly simplifies mechanical design as power does not have to be delivered to a moving part, but it complicates the electrical design as some sort of. This is a 4phase machine with 4 stator pole pairs and 3 rotorpole pairs 86 motor. Switched reluctance motor srm is gaining much interest in industrial applications such as wind energy systems and electric vehicles due to its simple and rugged construction, high.
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