induction motor speed control techniques

Ngày tải lên: 18/12/2013, 22:06

... designed to control a brush-less DC motor. However, by constructing a feedback loop that can detect the outputs of an induction motor, we can use this motor controller to control an induction ... responsible for the induction motor s many advantages are clearly explained. Wildi also presents the two types of induction motors: “the squirrel cage induction motor and the “wound motor . An explanation ... a control strategy that varies the frequency and voltage of the signal applied to the windings of the induction motor, while controlling the flux created in the air-gap of the induction motor. ...

Ngày tải lên: 27/10/2013, 23:15

... root-locus domain. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 24 Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System 1. Introduction This ... well-behaved speed- torque characteristics, and adaptability to various types of control methods. DC motors are classified as either integral-horsepower motors (≥ 1 hp) or fractional-horsepower motors ... power amplifier. Motor speed is measured using an analog tachometer. Figure 2. Physical System Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 5 Most...

Ngày tải lên: 25/01/2014, 13:20

... closed loop control of a drive system consisting of matrix converter and induction machine. Slip control and field oriented control are the basic methods applied for closed loop control [4]. ... are the basics of Direct Torque Control, Direct Current Control and Sliding Mode Control of matrix converters. I. INTRODUCTION In recent years many research results on control methods for matrix ... Converters in Direct Torque Control of Induction Machines,” IEEE Trans. Ind. Electron., vol. 48, pp. 1057-1064, December 2001. [10] M. Depenbrok, “Direct Self -Control (DSC) of Inverter-Fed Induction Machine”,...

Ngày tải lên: 13/05/2014, 00:55

... CHAPTER 18 At Speed Debugging Techniques Throughout the book so far we have discussed a number of techniques for implementing VHDL designs and ways to make ... behave as expected. These techniques include simulation, synthesis of the design to an FPGA or ASIC, and gate-level simulation using VITAL libraries. A new technique called At -Speed Debugging is just ... Data Displayed as Waveforms. Figure 18-12 Watchpoint Specification Dialog Box. 411 At Speed Debugging Techniques true, the IICE will trigger, indicating that the instruction register is be- ing...

Ngày tải lên: 29/09/2013, 18:20

Ngày tải lên: 15/10/2013, 16:10

... torque control 113 3 D.C. motor drive control 114 Flux controller 114 Torque controller 115 Performance and applications 116 4 Analysis of and set up of a speed controller 116 Ideal speed controller ... induction motors 9 Torque characteristics 10 Voltage-frequency relationship 11 Increased voltage 12 Reduced frequency 12 Slip-ring induction motor 13 Speed- changing motors 13 A.C. induction motor ... happens as speed is increased? 124 Medium -speed operation 124 How is performance maintained as speed increases? 125 High -speed operation 125 Summary of typical/practical control 126 Control of speed...

Ngày tải lên: 20/10/2013, 02:15

Ngày tải lên: 17/12/2013, 14:15

Ngày tải lên: 17/12/2013, 18:06

... algorithm in the MATLAB Neural Network Toolbox. The performance of an open-loop volts/Hz speed- controlled induction motor drive has been evaluated with the ANN-based modulator and compared with that ... Silva, and M. P. Kazmierkowski, “A neural network based space vector PWM controller for voltage-fed inverter induction motor drive,” IEEE Trans. Ind. Applicat., vol. 36, pp. 1628–1636, Nov./Dec. ... 2000. [3] J. O. P. Pinto, B. K. Bose, and L. E. B. da Silva, “A stator flux oriented vector-controlledinduction motor drive with space vector PWM and flux vector synthesis by neural networks,” IEEE...

Ngày tải lên: 22/12/2013, 08:16

Ngày tải lên: 28/12/2013, 22:07

... the lin- ear current control, the digital deadbeat control, and the hysteresis control. In principle, analog control techniques have the fastest speed of response, not being delayed by any A/D conversion ... current i S spectrum. niques for active filter applications. All the techniques, hys- teresis control, deadbeat control, and linear rotating frame control were considered, including the latest improvements brought ... in the control techniques result in rather satisfactory performance levels for all three controllers. How- ever, the results of the comparison show a certain superiority of the hysteresis control. ...

Ngày tải lên: 03/01/2014, 19:45

... Block scheme of FL controller, (b) control surface of con- ventional PI controller, (c) control surface of FL controller; comparison of current-tracking performance with PI and FL controller: (d) ... field-oriented controlled induction motor drive,” IEEE Trans. Ind. Applicat., vol. 30, pp. 1247–1253, Sept./Oct. 1994. [28] , “Novel current regulation for a field-oriented controlled induc- tion motor ... induction machine controllers,” IEEE Trans. Ind. Applicat., vol. IA-23, pp. 597–602, July/Aug. 1987. [30] J. Moerschel, “Signal processor based field oriented Vector Control for an induction motor...

Ngày tải lên: 03/01/2014, 19:45

...  Overview of Gas Springs 2 . 21369 . 2007 . 1  Speed Control TM « SPC Gas Springs, cushioned 2486.12. FIBRO SPC Gas Springs Speed Control TM « are designed to reduce or eliminate the ... caused by the increased return travel speed in high speed presses (link drive presses). SPC Gas Springs feature an integral return travel delay which reduces the speed of the gas spring to 0.4 m/s ... 2 . 21370 . 2007 . 1  3 Speed Control TM « SPC Gas Springs, 2486.12. cushioned subject to alterations Force in daN at Piston...

Ngày tải lên: 22/01/2014, 02:20

... AC INDUCTION MOTORS Generally, induction motors are categorized based on the number of stator windings. They are: • Single-phase induction motor • Three-phase induction motor Single-Phase Induction ... 19 AN887 CONTROL TECHNIQUES Various speed control techniques implemented by modern-age VFD are mainly classified in the following three categories: • Scalar Control (V/f Control) • Vector Control ... squirrel cage induction motor is less than 5%. The actual full-load slip of a particular motor is dependant on the motor design. The typical base speed of the four pole induction motor varies...

Ngày tải lên: 25/01/2014, 13:20

... constant-slip control is a torque input control, a speed control is necessary for speed regulation. For the study shown in Figure 13.3-4, the torque command is calcu- lated in accordance with the speed control ... zero speed, when, approximately 250 ms into the study, the mechanical speed command is stepped Figure 13.6-2. Torque control loop. 504 INDUCTION MOTOR DRIVES taken. Another method of controlling ... described. 13.2.  VOLTS-PER-HERTZ CONTROL Perhaps the simplest and least expensive induction motor drive strategy is constant volt-per-hertz control. This is a speed control strategy that is based...

Ngày tải lên: 16/02/2014, 18:54

Ngày tải lên: 16/03/2014, 12:20

Ngày tải lên: 24/03/2014, 20:22

... xiii ISECTION ESSENTIALS OF CONTROL TECHNIQUES WHAT YOU NEED TO KNOW 1 Introduction: Control in a Nutshell; History, Theory, Art, and Practice 3 1.1 e Origins of Control 3 1.2 Early Days of ... J. (John) Essentials of control techniques and theory / John Billingsley. p. cm. Includes index. ISBN 978-1-4200-9123-6 (hardcover : alk. paper) 1. Automatic control. 2. Control theory. I. Title. TJ223.M53B544 ... 10/12/09 1:40:45 PM Essentials of Control Techniques and Theory 91239.indb 1 10/12/09 1:40:29 PM This page intentionally left blank 6 ◾ Essentials of Control Techniques and Theory a small sinusoidal...

Ngày tải lên: 21/06/2014, 07:20