field theory approach to the calculation of induction motor performance.

by Malcolm John Lees

Written in English
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Edition Notes

Thesis (Ph. D.)--The Queens" University of Belfast, 1972.

The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL21530175M

Three-Phase Induction Motor Revised: Ap 3 of 10 The rotor receives its excitation by induction from the armature field. Hence, the induction machine is a doubly-excited machine in the same sense as the synchronous and DC machines. The basic principle of operation is described by Faraday’s Size: KB. 3. Field Orientated Control The Field Orientated Control (FOC) [1][3] consists of controlling the stator currents represented by a vector. This control is based on projections which transform a three-phase time and speed dependent system into a two co-ordinate (d and q co-ordinates) time invariant system. Target Motor Theory MOTOROLA 3-Phase AC Induction Motor Vector Control 5 Figure AC Induction Motor Speed-torque Characteristic Squirrel-cage AC induction motors are popular for their simple construction, low cost per horsepower and low maintenance (they contain no brushes, as do DC motors). They are available in a wide range of power Size: KB. motor using above developed approach. To validate the results obtained by soft computing techniques by its hardware implementation and Evaluation of model at different operating conditions. Fig 1: The Various stages of the proposed work A three phase Induction Motor is used for the practical purpose.

But these methods cannot be used for motor efficiency evaluations in the field because it disrupts the production process of the industry. This paper proposes a swarm intelligence algorithm, Particle Swarm Optimization (PSO) for efficiency evaluation of in-service induction motor based on a modified induction motor equivalent circuit by: 1. In the meanwhile, the voltage applied to the auxiliary winding is kept constant at the rated value. The performance of a 1 hp capacitor run single phase induction motor is experimentally and theoretically investigated, using this method of speed control. The experimental rig is built in the laboratory and a complete set of test results is by: Performance Characteristics and Double Revolving Theory of Single Phase Induction Motor Yahaya Asizehi ENESI 42 theory that is applicable to variety of induction motor types. A given data of single phase induction motor is taken from laboratory and its equivalent circuit is obtained through the double revolving theory. The similarities and differences of induction machines, compared to the latest PM machines and wound-field synchronous machines, is a common theme. The material in this course is the engineering material you can't find in a book, and you can't get from software use or training.

to the induction motor drive was only considered for the speed control due to the linearity of the mechanical part, and facility to realize matching conditions [14–19]. Based on the adaptive model reference technique, this paper proposes a new robust architecture to realize the field-oriented control of the induction motor drive. The. the-shelf induction motor. The induction motor can be controlled in either a voltage or current regulation mode. The voltage mode is directly controlled by an external programmable controller while the current mode is accomplished with the FOC boards. The current mode uses rotor speed feedback information to create a closed loop control system File Size: KB. A 2-pole, V, 50hz, single-phase induction motor is running at rpm. The equivalent circuit parameters are: R 1 = Ω, R 2 = Ω, X 1 = Ω, X 2 = Ω, X m = 80Ω, P rot = W Calculate the input current, input power, power factor, output power and efficiency. Solution. INDUCTION MOTOR AND DIFFERENT SPEED CONTROL METHODS Introduction This chapter describes the construction, principal of operation, start up consideration and the basic speed control methods for induction motor. Three Phase Induction Motor (IM) The three-phase induction motors are also called as asynchronous motors, which areFile Size: KB.

field theory approach to the calculation of induction motor performance. by Malcolm John Lees Download PDF EPUB FB2

The design and performance of induction motors were improved during the Twentieth to Century, reaching maturity around the late s. Further improvements date principally concern the use of modern construction material, specially for winding isolation, and deeper knowledge of certain phenomena regarding harmonics and noise reduction, more Reviews: 1.

This volume includes contributions on: field theory and advanced computational electromagnetics; electrical machines and transformers; optimization and interactive design; electromagnetics in materials; coupled field and electromagnetic components in mechatronics; induction heating systems; bioelectromagnetics; and electromagnetics in education.5/5(1).

The induction motor is made up of the stator, or stationary windings, and the rotor. The stator consists of a series of wire windings of very low resistance permanently attached to the motor frame.

As a voltage and a current is applied to the stator winding terminals, a magnetic field is developed in the windings. By the way the stator windings are. Single Phase Induction Motor Double revolving field theory • The three-phase induction motor starting torque inversely depends on the slip • This implies that a small positive slip (–) generates larger torque than a larger negative slip (–) • This torque difference drives the motor continues to rotate in a forward direction without any external torque.

Theory and Analysis of Three Phase Induction Motor using Written Pole Technology Kishor S. Deshmukh1, Dr. Prof. Kamal Bansal 2, Dr. Atul Killedar3 1PhD Scholar, Electrical and Electronics Engg., University of Petroleum and Energy Studies, Dehradun 2Dean and Professor, College of Engineering, University of Petroleum and Energy Studies, DehradunAuthor: Kishor S.

Deshmukh, Kamal Bansal, Atul Killedar. Induction motor drives with closed-loop control are used in similar applications to d.c. motor drives (i.e. cranes and hoists, winders and un-winders, paper and pulp processing, metal rolling, etc.).

These drives are also particularly suited to applications that must operate at very high speeds with a high level of field weakening, for example spindle motors. Basic Design and Theory of Operation The alternating current (AC) induction motor is one of the most rugged and most widely used machines in industry.

There are two major components of an AC induction motor. The stationary or static component is the stator. The rotating component is File Size: KB. Record all nameplate information for the induction motor.

You should also make a DC measurement of stator winding line-to-line resistance using a DMM. Speed and Direction of Rotation. The motor is mounted in a test rig that allows one to control the torque applied to the motor shaft and to measure both rpm and torque. The rpm sensorFile Size: 1MB.

The difference is that, in the case of the induction motor, the secondary windings can move Due to the rotation of the rotor (the secondary winding of the IM), the induced voltage in it does not have the same frequency of the stator (the primary) voltage •3/19/ •EMD-II- File Size: 2MB.

The field oriented control (FOC) of induction motor provide one of the most suitable and popular speed control technique presently used. The principle of field oriented control is based on the.

• Single-phase induction motor • Three-phase induction motor Single-Phase Induction Motor There are probably more single-phase AC induction motors in use today than the total of all the other types put together. It is logical that the least expensive, low-est maintenance type motor should be used most often.

Physical Layout of Induction Motor In an induction motor induction refers the field in the rotor is induced by the stator currents and asynchronous refers that the rotor speed is not equal to the stator speed.

The rotor of the squirrel cage three phase induction motor is cylindrical in shape and have slots on its periphery.

TheFile Size: 3MB. Consider a single phase induction motor with standstill rotor. The stator winding is excited by the single phase a.c.

supply. This supply produces an alternating flux acts along the axis of the stator winding. Due to this flux, e.m.f., g. Performance Calculation for a High Speed Solid- Rotor Induction Motor Article (PDF Available) in IEEE Transactions on Industrial Electronics 59(6) June with 1, Reads.

induction motor can be controlled in open loop and closed loop controls []. The open loop control is preferable when high dynamic performance isn’t required. In open loop control at constant flux region, the applied voltage on the motor (induction motor) is Author: Hamdy Mohamed Soliman.

Abstract. In this project, for analysing the performance of 3à ¤ induction motor drive which is having its previous methodologies to obtain the performance parameters such as speed regulation and optimization of stator flux and torque ripples of a three phase induction motor drive for it to achieve its high efficiency.

Revolving Field Theory is used for the analysis of behavior of Single Phase Induction Motor. Before going into the details of Revolving Field Theory, first we should know why do we need to study this theory. Well, a Single Phase Induction Motor with its main winding alone can be represented as shown in figure below.

Read more Revolving Field Theory of Single. Theory of Heating by Induction / 7 tromagnetic, or flux) around it. When the induction coil is placed next to or around a workpiece, the lines of force concentrate in the air gap between the coil and the workpiece.

The induction coil actually functions as a trans-former primary, with the workpiece to be heated becoming the transformer Size: KB. An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.

An induction motor can therefore be made without electrical connections to the rotor. An induction motor's rotor can be either wound type or squirrel-cage. induction motor in closed loop is the significant feature of the thesis work.

The control strategy is made by using Xilinx. Firstly three-phase induction motor drive system is simulated in various modes using Matlab/Xilinx, then finally closed loop control of.

"The Field Orientation Principle in Control of Induction Motors" presents the FOP in a simple, easy-to-understand framework based on the space-vector dynamic model of the induction machine.

Relationships between the classic phasor equivalent circuits of the motor and their vector counterparts are highlighted. viii A Modern Analysis Approach of Induction Motor { Luigi Alberti {duzione scienti ca internazionale degli ultimi anni.

In letteratura si possono trovare infatti molte pubblicazioni riguardanti questo tema. Inoltre, anche i soft-ware commerciali per l’analisi ed il progetto di macchine elettriche implementano. tion of ac motors [1]. An essential part of this theory is the calculation of motor inductances.

These inductances are evaluated using winding function and other equations within the theory. By this approach all space harmonics are taken into account without any restriction concern-ing symmetry of stators or rotors windings.

Hence this. Working Principle of an Induction Motor The motor which works on the principle of electromagnetic induction is known as the induction motor. The electromagnetic induction is the phenomenon in which the electromotive force induces across the electrical conductor when it is placed in a rotating magnetic field.

Practical Electric Motor Handbook - Ebook written by Irving Gottlieb. Read this book using Google Play Books app on your PC, android, iOS devices.

Download for offline reading, highlight, bookmark or take notes while you read Practical Electric Motor Handbook/5(10). Applying double revolving field theory, it is possible to think of a single phase induction machine as the sum of two smaller induction machines, each trying to rotate in opposite directions.

The torque speed curve for a single phase induction machine can be sketched as the sum of two torque speed curves - one tying to drive the machine in the.

new issues of investigation for induction motor with vector control strategies [1, 2]. It is usually desirable that the motor can provide good dynamic torque response as that obtained from dc motor drives.

Field-oriented control is a strategy research for induction motor speed adjustment feeding by variable frequency converter [3].

The Field Orientation Principle in Control of Induction Motors (Power Electronics and Power Systems) [Trzynadlowski, Andrzej M.] on *FREE* shipping on qualifying offers. The Field Orientation Principle in Control of Induction Motors (Power Electronics and Power Systems)Cited by: Induction Motor‟s torque and flux.

„Induction Motor Field oriented controlled‟ drive obtains every advantage of DC machines. For accurate transient and steady-state responses, the instantaneous control of individual quantities is done [4], [5]. There are two types of FOC method [4].Author: Ujash Vachhani, Ashish Patel.

The E-book covers the basic principles of induction motor theory and engineering economi cs through examples. The first part of the book discusses induction motor theory, its equivalent circuit diagram and speed-torque function The E-book uses the steady-state induction motor.

Each of these components rotates in the opposite direction i. e if one φ m /2 is rotating in a clockwise direction then the other φ m / 2 rotates in an anticlockwise direction. When we apply a single phase AC supply to the stator winding of single phase induction motor, it produces its flux of magnitude, φ ing to the double field revolving theory, this .Consistent Induction Motor Parameters for the Calculation of Partial Load Efficiencies by Means of an Advanced Simulation Model C.

Kral, A. Haumer, and C. Grabner Abstract—From the rating plate data of an induction motor the nominal efficiency can be determined. Without detailed knowledge of equivalent circuit parameters, partial load behaviorFile Size: KB.The r' Equivalent Circuit of an Induction Motor 54 Principles of the Torque Control 56 Scalar Torque Control System 59 Examples and Simulations 66 3 FIELD ORIENTATION PRINCIPLE 87 Optimal Torque Production Conditions 88 Dynamic Block Diagram of an Induction Motor in the Excitation Reference Frame 90File Size: 1MB.