The switched reluctance motor srm is a type of stepper motor, an electric motor that runs by. The rotor is basically a piece of laminated steel and its shape forms salient poles. A cross section of a three phase switched reluctance motor srm is shown in fig. Ee2403 special electrical machines sce department of electrical and electronics engineering because there is no rotor copper loss. Studying different types of power converters fed switched. Electric drives brushless dc and reluctance motors. As the rotor rotates, the inductance of the phase windings of a machine varies between the inductance.
The rotor is basically a piece of laminated steel and its shape forms. The reluctance motor has basically two main parts called stator and rotor. Pdf books download book switched reluctance motor drives by r. Switched reluctance motor srm free download as powerpoint presentation. The pc master software referenced in this document is also. Electric vehicles evs and hybrid electric vehicles hevs can reduce greenhouse gas emissions while switched reluctance motors srms are one promising motor technology for evs. Power factor improvement in switched reluctance motor drive. Brushless dc motors however, the design of a pm motor should be such that the effect of demagnetization due to armature reaction, which is maximum at standstill. Contributions to the study of switched reluctance machine for. It works on the same principle as for stepper motor. Studying different types of power converters fed switched reluctance motor. It is true that single phase motors are less efficient substitute for 3phase motors but 3phase power is normally.
Before being produced the 1612 switched reluctance motor was optimised and calculated with a finite. Simulation and testing of a switched reluctance motor by. If smooth rotation is the goal, there is an electronicdriven version of the switched reluctance motor. Ee2403 special electrical machines a course material on. There are no windings or permanent magnets on the rotor.
Jan 06, 2016 switched reluctance motor drives the switched reluctance drive was developed in the 1980s to over advan tages in terms of eyciency, power per unit weight and volume, robustness and operational xexibility. Book switched reluctance motor drives pdf download m. To achieve this a suitable theoretical model is essential, thus a simple but complete motor model is developed. In 1838 a locomotive was driven by such a motor in scotland. Switched reluctance motors the structure of a switched reluctance motor is shown below. Switched reluctance motor srm is gaining more interest in the last decades due to its simple and robust structure. Global and chinese 3phase switched reluctance motor industry, 2018 market research report 3phase switched reluctance motor industry, 202023 market research report is a professional and indepth study on the current state of the global 3phase switched reluctance motor industry with a focus on the chinese market. A switched reluctance motor for aerospace application. Switched reluctance motor electric motor magnetic devices scribd. Switched reluctance motor srm the switched reluctance motor was designed for use in high power, high efficiency, variable speed drives. Jul 30, 2017 a reluctance motor is a type of electric motor that induces nonpermanent magnetic poles on the ferromagnetic rotor. Construction details of switched reluctance motor with six stator poles and four rotor poles can be explained by referring to figure 3. Reluctance motor subtypes include synchronous, variable, switched and.
The stator is made up of silicon steel stampings with inward projected poles. Gouri sankar 1001227269 debendra kido 1001227267 ananya subhadarsinee 1001227255 2. The reluctance motor is a type of synchronous machine. The stepper motor which also works on the principle of. Unlike a conventional synchronous motor, both the rotor and stator of a switched reluctance motor have salient poles. Principle of operation of switched reluctance motor.
The stator poles have concentrated winding rather than sinusoidal winding. Of eee dept operation of a switched reluctance motor srm. For the test drive, we selected the fluxcurrent method. Each stator phase inductance presents a linear variation triangular shape and also the absence of ferromagnetic circuit saturation phenomenon. All about reluctance motors what they are and how they work. You will be redirected to the full text document in the repository in a few seconds, if not click here. A switched reluctance motor is an electric motor in which the torque is produced by the tendency of its moveable part to move to a position of least reluctance, which corresponds to the position of maximum inductance miller 1993. 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. The stampings are slotted on its periphery to carry the winding called stator winding. Fault diagnosis of switched reluctance motors in electrified.
Single phase equivalent circuit for switched reluctance motor. Gouri sankar 100122726 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Abdelaliem shoubra faculty of engineering, cairo, egypt. Switched reluctance motor open model this example shows a currentcontrolled 60kw 64 srm drive using the srm specific model based on measured magnetization curves. Switched reluctance motor drives electric equipment. Motor runs at slip speed reluctance torque, trel reluctance torque, trel maximum reluctance torque, trelmax occurs at. If a single machine has a poor power factor, capacitors can be connected in parallel with the device, that is, connected to the live and the neutral terminals of the reactive device, so that they.
To start with the switched reluctance motor, the torque production in the machine is explained with the help of principle of electromechanical energy produced in the coil of the machine. The rotor has neither windings nor permanent magnets. In the light of above it is a competitive motor variable speed dc motor and variable speed 3 phase cage induction motor. Krishnan written the book namely switched reluctance motor drives author r. Construction and operation of srmswitched reluctance motor. Torque is generated through the phenomenon of magnetic reluctance. The reliability issues and the requirements for the degraded operating modes of the. A brushless dc motor has a rotor with permanent magnets and a stator with. Switched reluctance motor ppt pdf presentation the switched reluctance motor srm is an electric motor which operates on reluctance torque. Switched reluctance motor for electrical drives offor electrical drives electric power plants equipment vladimir kuzmichev mpeitu, orgres. The synchronous reluctance motor has no synchronous starting torque and runs up from stand still by induction action. As the major part of hev technologies, the electric motor drives have to offer high efficiency, high power density, high controllability, wide. Power factor improvement in switched reluctance motor drive 65 that suits better.
It means that the excitation is done sequentially from phase to phase as the rotor moves. This does not mean that an absolute position sensor must be used. Switched reluctance motors are a type of stepper motor, but they are unique. Smooth transition between optimal control modes in switch reluctance motor by badal patnaik 1001227260 sanjit debta 1001227317 d. The principle of operation of reluctance machines are known for a long time. A reluctance motor is a type of electric motor that induces nonpermanent magnetic poles on. 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. Oct, 2014 switched reluctance motors science topic explore the latest questions and answers in switched reluctance motors, and find switched reluctance motors experts. Sort by date 1 the reluctance motor springs forth august 2014. The switched reluctance motor srm is an electric motor which operates on reluctance torque. A reluctance motor is a type of electric motor that induces nonpermanent magnetic poles on the ferromagnetic rotor.
A variable reluctance motor intended to move in discrete steps, stop, and start is a variable reluctance stepper motor. This greatly simplifies mechanical design as power does not have to be delivered to a moving part, but it complicates the. Switched reluctance motor for electrical drives offor. This chapter illustrates the fault diagnosis and fault tolerance operation of srmbased evshevs, where high reliability is a vital factor involving human lives. Reluctance motor technical seminar report annual year 2014, electrical and electronics department, sdmt, ujire574240 page 1 chapter 1 introduction first time reluctance motors is mostly used by davidson as a traction drive for an electric. This article presents an understanding of what reluctance motors are and.
Variablereluctance stepper motor variablereluctance stepper motor variablereluctance stepper motor variablereluctance stepper motor variablereluctance stepper motor variablereluctance stepper motor variablereluctance stepper motor typical driver circuit typical switching circuit stepper motors a stepper motor is a pulsedriven. Switched reluctance motor drives for hybrid electric vehicles. In order to achieve a continuous rotation, each phase winding is energized by a proper current at a suitable rotor angle. The motor and its associated powerelectronic drive must be designed as an integrated package, and optimised for a particular speciwcation, e. The reluctance motor is an electric motor in which torque is produced by the tendency of its moveable part to move to a position where the inductance of the excited winding is maximized. Computer skills ms office word, excel, powerpoint, mathcad, autocad, matlab.
What links here related changes upload file special pages permanent. Switched reluctance motor srm is gaining much interest in industrial applications such as wind energy systems and electric vehicles due to its simple and. Pdf a switchedreluctance motor for aerospace application. Modelling of three phase switched reluctance motor drive. Blow fan coalhandling facility feed pump smoke exhauster buster pump. A very good overview of sensorless methods for determining the rotor position of switched reluctance motors is given in ray. Generally, all family members are appropriate for switched reluctance motor control. We know about different types of synchronous motors, apart from all these motor works based on reluctance. Because of inherent simplicity, robustness of construction and low cost. To maintain each stator phase current and also the rotor angular. Switched reluctance motor free download as pdf file. What links here related changes upload file special pages permanent link page.
Variable reluctance motors or steppers actually use rotors like those in figure below. The variable reluctance motor is an evolution of the stepping motor and is generally designed for use in low power, open loop position and speed control systems where efficiency is not of prime importance. Reluctance motor free download as powerpoint presentation. This doubly salient arrangement is very effective for electromagnetic energy conversion. Reluctance motors using matlabm file, ieee proceedings, nov 2002. Switched reluctance motors srm are seeing a resurgence as motor manufacturers improve their performance, reliability, efficiency, and cost as. The switched reluctance motor srm is a type of stepper motor, an electric motor that runs by reluctance torque. Here we will discuss construction and working principle of reluctance motor. Download as ppt, pdf, txt or read online from scribd.
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