ac induction motor speed control schematic
Tài liệu AC Induction Motor Fundamentals docx
Ngày tải lên :
25/01/2014, 13:20
... OF AC INDUCTION MOTORS
Generally, induction motors are categorized based on
the number of stator windings. They are:
ã Single-phase induction motor
ã Three-phase induction motor
Single-Phase Induction ... Although AC induction motors are easier
to design than DC motors, the speed and the torque
control in various types of AC induction motors require
a greater understanding of the design and the
characteristics ... Microchip Technology Inc.
FIGURE 9: TORQUE -SPEED CURVES OF DIFFERENT TYPES OF SINGLE-PHASE
INDUCTION MOTORS
THREE-PHASE AC INDUCTION
MOTOR
Three-phase AC induction motors are widely used in
industrial...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme
Ngày tải lên :
27/10/2013, 23:15
... 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 machine.
... Gareth S Roberts
4. The Induction Machine
4.1 The fundamental operating principles for an induction
motor
An induction motor is an asynchronous AC (alternating current) motor. The least
expensive ... to develop a control strategy for the DSP controller that controls the
torque production within the induction machine. However, there is no great emphasis
placed on precise torque control.
...
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Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
Ngày tải lên :
25/01/2014, 13:20
... 1.0 A
A schematic diagram of a DC motor is shown in Figure 6.
Figure 6. Schematic Diagram of a DC Motor
Mechatronics Kevin Craig
DC Motor / Tachometer Closed-Loop Speed Control System ... 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 ... Mechatronics Kevin Craig
DC Motor / Tachometer Closed-Loop Speed Control System 21
Table 1. Specifications of the Honeywell 22VM51-020-5 DC Motor with Tachometer
Motor Characteristics Units Values...
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Direct control methods for matrix converter and induction motor
Ngày tải lên :
13/05/2014, 00:55
... 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”, IEEE ... 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]. ... modern direct control methods to the
system with matrix converter and induction machine.
In this paper, the most important direct control methods
for matrix converter and induction machine are presented
to...
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Tài liệu A neural-network-based space-vector PWM controller for a three-level voltage-fed inverter induction motor drive doc
Ngày tải lên :
22/12/2013, 08:16
... dynamic performancecompar-
ison ofthe drive during acceleration where acceleration torque is
very low due to slow acceleration. The machine hasa speed- sen-
sitive load torque
which is evidentfrom ... 660 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 38, NO. 3, MAY/JUNE 2002
A Neural-Network-Based Space-Vector PWM
Controller for a Three-Level Voltage-Fed
Inverter Induction Motor Drive
Subrata ... are
used to train the network by a backpropagation algorithm in
the MATLAB Neural Network Toolbox. The performance of an
open-loop volts/Hz speed- controlled induction motor drive has
been evaluated...
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Tài liệu Speed Control SPC GAS SPRINGS, cushioned pptx
Ngày tải lên :
22/01/2014, 02:20
...
.
1
Speed Control
TM
ô
SPC Gas Springs,
cushioned 2486.12.
FIBRO SPC Gas Springs Speed Control
TM
ô are designed to
reduce or eliminate the sheet metal retainer bounce back
which is ... 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 ... a soft arrival for the sheet metal
retainer.
Benefits of the Speed Control
TM
ô SPC Gas Springs,
cushioned:
Prevents bounce back of sheet metal retainer.
Increased productivity through...
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Chapter 13 induction motor drives
Ngày tải lên :
16/02/2014, 18:54
... approximately
achieve the commanded speed without the use of speed feedback. The second strategy
is constant slip control. In this control, the drive system is designed so as to accept a
torque ... the use of induction machines in variable-
speed drive systems. Several strategies will be considered herein. The first, volts-per-
hertz control, is designed to accommodate variable -speed commands ... the
machine and load are identical to those in the study shown in Figure 13.2-4. However,
since the constant-slip control is a torque input control, a speed control is necessary for
speed...
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báo cáo hóa học:" Scan speed control for tapping mode SPM" docx
Ngày tải lên :
21/06/2014, 17:20
... As a result, the speed of a closed-loop control system (that is,
without loss of surface) is determined by the time constant
0 0
i
G K
τ
. Feedback speed,
the speed of the actuator, is limited ...
control [1, 2].
Let us find the maximum scan speed without loss of surface. The transient response of
the loop control to a capacitive displacement sensor output (if the high-frequency pole ... line traces of the calibration grating with the step height equal to
25 nm. At a constant speed of 30 àm/s (a), with a dynamic control (b), and with a
dynamic control and at a variable speed...
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