Introducing linear switched reluctance motor with segmental translator as a new type of lsrm, performance principles and design criteria are presented for two. And while the basic operating principle is the same for all stepper motors, there are differences in operation and performance between the three primary types. Pdf linear synchronous reluctance motor a comprehensive. Linear switched reluctance machine drives with electromagnetic levitation and guidance systems by byeongseok lee dissertation submitted to the faculty of the virginia polytechnic institute and state university in partial fulfillment of the requirements for the degree of doctor of philosophy in the bradley department of electrical and computer. Design and control of a ropeless elevator with linear. Introduction the linear switched reluctance motor lsrm has a simple and robust structure with low inertia and. Another model component is presented for motor resistive losses and core losses. The magnetic model used for the motor is more accurate, yet easier to implement, than the piecewise linear magnetic model typically used for reluctance motors. On the motor, built according to the described motor design, the measurements of the moving force were performed in order to verify the calculated values. The recent surge of activity since the 1980s has spurred university and industrial research and product development in the u. Analysis of performance of singlephase reluctance linear. Keywords linear switched reluctance machines, finite element analysis, machine. Unlike rotary electric motors, the linear motor has a start and an end to its travel. We know about different types of synchronous motors, apart from all these motor works based on reluctance.
A rotarylinear switched reluctance motor for automotive. In this study, an electromagnetic design of double sided linear switched reluctance motor lsrm is presented. Linear switched reluctance motor lsrm is one of the linear motors that can be used in such drives. Design, modeling and analysis of linear switched reluctance. Nonlinear modeling of a switched reluctance motor using lssvm. Machine with linear magnetic characteristics means that it ahs constant magnetic. Here we will discuss construction and working principle of reluctance motor. This paper is devoted to the simulation of the whole lsrm drive, including the linear motor, the power converter and the control. Index terms linear switched reluctance motor, linear. Switched reluctance motor drives modeling simulation analysis. Analysis and modeling of different topologies for linear. Design of the permanent magnet linear synchronous motor for. The electromagnetic dynamic model of the motor and the load are expressed as shown in 6 6 where is the load torque, j is the moment of inertia of rotating masses and b is. In the paper, analysis of the characteristics of a linear synchronous reluctance motor lsrm is.
In the last decades different topologies of special electrical machines were studied. Pdf modular linear transverse flux reluctance motors dan. However, switched reluctance motors are not used so far in submersible underwater motor for agriculture purposee. Force component fx produced in the linear reluctance motor. This paper aims to investigate, develop and fabricate a directdrive, rotary linear motor based on switched reluctance sr principle. Electrical terminal behaviour and torque are based on the analytic magnetic model. A variable reluctance motor intended to move in discrete steps, stop, and start is a variable reluctance stepper motor. The load inertia should be within the limits, for proper effectiveness. Abb synchronous reluctance motor and drive package technology. Apr 26, 2018 stepper motors are commonly used in linear motion applications for their precise positioning capabilities and good holding torque. The rotor is basically a piece of laminated steel and its shape forms salient poles. There are no windings or permanent magnets on the rotor.
Diy model maglev with 3phase linear motor duration. Design of linear switched reluctance motor driver for. The first linear electric motor was devised in 1883. What are the types of rotor in synchronous reluctance motor. Reluctance motors can deliver high power density at. Variable reluctance stepper motor its working circuit globe. There are two major types of lsm which are switch reluctance linear synchronous motor srlsm and permanent magnet linear synchronous motor. The reluctance motor has basically two main parts called stator and rotor. Linear induction motors are quite an engineering marvel, to convert a general motor for a special purpose with more or less similar working principle, thus enhancing its. 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.
Index termsconverter topology, linear machines, linear switched reluctance machines, switched reluctance motors, unipolar switching strategy. The developed simulation model results were compared with srdas software. Pdf linear synchronous reluctance motors lsrelms are becoming an attractive alternative for linear induction motors lims, linear. Ee6703 unit 3 switched reluctance motors srm 1 prepared by. Simulation of linear switched reluctance motor drives. In recent years, linear switched reluctance motors lsrms and its rotating.
Finite element analysis of linear reluctance motor anton hamler, mladen trlep, bojan stumbe rger, marko jesenik faculty of electrical engineering and computer science university of maribor smetanova 17, 2000 maribor slovenia abstract. A onetenth scaled prototype elevator focused on a home elevator with lsrms is designed and extensive experimental correlation is presented for the first time. Analysis and modeling of different topologies for linear switched. The torque developed by an srm is dependent on the change of fluxlinkage and rotor position. Modelling a nonlinear variablereluctance motor drive. In the present paper, an electromagnetic simulation model is introduced for the conventional type of linear switched reluctance motor lsrm in which the dynamic characteristics of the motor are predicted precisely by carrying out 2d finite element fe transient analysis using ansys fe package. Uses soft magnet rotor that is magnetized by the application of current in the stator coils 3. The proposed system has the advantages of mechanically robust. If smooth rotation is the goal, there is an electronicdriven version of the switched reluctance motor. The design and mathematical modeling of a linear switched. Reluctance motor subtypes include synchronous, variable, switched and variable stepping. Wajdi zaafrane1,2, mahir dursun3, jalel khediri1,2, and habib rehaoulia1,2. Practically it is an efficient combination of a usual rotational srm and a special linear srm having several rotor stacks in its mover. Electric drives brushless dc and reluctance motors.
Design and analysis of a double sided linear switched reluctance. Laboratory model of the proposed linear transverse flux reluctance machine one modules iron core is shown in fig. Types of electric motors electric motors dc motors other motors h ac motors s unt motor separately excited induction motor stepper motor motor brushlessdc motor series motor hysteresis motor permanent magnet dc pmdc synchronous motor reluctance motor compounded motor universal motor. Many papers have dealt with modeling and simulation switched reluctance motor drives 68 but, until now, little work has been done in their linear counterpart. Pdf this paper introduces a design procedure as well as an experimental and analytical investigation for linear switched reluctance motor lsrm. A reluctance motor torque is produced due to the tendency of the rotor to align itself in the minimum reluctance position, when the speed of the motor is close to the synchronous speed. The paper describes a novel, high performance, directdriven rotary linear motion system.
The stator and the rotor of the motor are aligned in such a way that the magnetic reluctance is minimum. Linear hybrid reluctance motor with high density force mdpi. 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. 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. A reluctance motor is a type of electric motor that induces nonpermanent magnetic poles on the ferromagnetic rotor. A rotarylinear switched reluctance motor for advanced. Translations are the most common motions in several industrial branches. Research article comparative study of different switching. But large air gaps and low efficiencies prevented linear electric motors from being widely used. This paper presents the comparison study between two design method of a single sided linear planner switched reluctance motor lpsrm with an a translator and a passive stator. One of the most interesting machines belonging to this category is the transverse flux machine. A matlabsimulinksrdas environment to simulate a 64 switched reluctance motor is presented in this paper. Switched reluctance motor srm the switched reluctance motor was designed for use in high power, high efficiency, variable speed drives. A drive system for an elevator includes a drive machine by means of which the for moving and supporting an elevator car.
Analysis of performance of singlephase reluctance linear motor. A novel double sided linear switched reluctance motor. The motor can generate two degrees of freedom movements. Simulation and testing of a switched reluctance motor by matlab simulink and dspace saman abbasian department of energy and environment faculty of electric power engineering chalmers university of technology the main objective of this thesis is to build and test a srm drive system to provide a research platform. Abstract in the paper a rotary linear switched reluctance motor is proposed and investigated by means of advanced numerical simulations. Determination of flux linkage characteristics and inductance. Nonlinear modeling of a switched reluctance motor using lssvm abc 146 where is the number of phases in the machine. The motor is based on the variable reluctance principle 5. Us6305501b1 elevator reluctance linear motor drive system. Motor was controlled more accurate with linear incremental encoder by sensing acceleration and movement direction of door. Pdf linear switched reluctance motor design and performance. Characteristically, a linear motor s active section has ends, whereas more conventional motors are arranged as a continuous loop. Lsrm controlled by pic 18f452 microcontroller was used to drive automatic door.
Finite element methods, force, linear motors, reluctance motors. However, linear motors are not necessarily straight. The work presents a lsrm complete design by 2d finite element analysis method 2d fea and rotary to linear conversion method design. Keywords linear switched reluctance motor lsrm, asymmetric half bridge converter, bifilar converter, cdump converter, variable dc link voltage with buckboost converter, three phase bridge module converter. There is an increasing interest in direct drive systems with continual development of power electronics and control strategies. Download switched reluctance motor drives modeling simulation analysis design and applications easily in pdf format for free. Simulation and testing of a switched reluctance motor by.
Linear switched reluctance motor lsrm drives are investigated and proved as an alternative actuator for vertical linear transportation applications such as a linear elevator. A new linear switched reluctance motor with maglev effect. Variable reluctance stepper motor the principle of variable reluctance stepper motor is based on the property of the flux lines which capture the low reluctance path. A linear motor is an electric motor that has had its stator and rotor unrolled thus instead of producing a torque it produces a linear force along its length. Linear switched reluctance motor lsrm is a type of direct drive motors. Comparative design and modeling study of single sided linear. Elasticity and backlash are the problems that hinder the accuracy of such. There are two types of the variable reluctance stepper motor.
May 31, 2019 a linear induction motor or lim is a special type of induction motor used to achieve rectilinear motion rather than rotational motion as in the case of conventional motors. The flux linkage characteristic of the motor is required to make the control circuit. Industrial interest in switched reluctance motor srm drives has varied since 1850s. It is mechanically robust, simple to construct and easy to operate also in hostile automotive.
Jul 11, 2014 linear switched reluctance motor with 6 rotors and 8 stators. The primary circuit of a linear motor is permanently fitted to a wall of a building while its secondary circuit is fitted in conjunction with the elevator car and moves with the elevator car. Assessment of linear switched reluctance motors design. Variable reluctance motors or steppers actually use rotors like those in figure below. In this study a driver has been designed for linear switched reluctance motor lsrm with 64 poles, 3 phases, 250w. The design and mathematical modeling of a linear switched reluctance motor suitable for ground. Abstractin this study, a buck converter and a driver has been designed for linear switched reluctance motor. Usually the linear motion is generated by belt or spindle drives using rotational motors. Introducing linear switched reluctance motor with segmental translator as a new type of lsrm, performance principles and design criteria are presented for two various topologies of this motor. Linear motors have nearly the same long history as rotary motors.
91 771 1376 1407 485 6 21 1166 177 1010 727 1181 618 1488 1260 586 1557 546 1449 423 1588 1048 237 751 92 1163 708 669 1069 744 850 842