single phase motor speed control methods
Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
Ngày tải lên :
25/01/2014, 13:20
... Craig
DC Motor / Tachometer Closed-Loop Speed Control System 11
The DC motor/ tachometer system has a single input and a single output. The input is the voltage
applied across the two motor terminals. ... 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 ... 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...
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Direct control methods for matrix converter and induction motor
Ngày tải lên :
13/05/2014, 00:55
... 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 ... 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]. ... section III the basic ideas of the
three control methods mentioned above will be outlined,
starting with Direct Torque Control and Sliding Mode
Control, as these methods use the same switch
configurations...
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Single phase uninterruptible power supply based on z source inverter
Ngày tải lên :
03/01/2014, 19:12
... D. Lorenz, Control topology
options for single- phase UPS inverters,” IEEE Trans. Ind. Appl., vol. 33,
no. 2, pp. 493–501, Mar./Apr. 1997.
[16] P. Mattavelli, “An improved deadbeat control for ... Mar. 19–23, 2006, pp. 348–354.
[9] C H. Lai and Y Y. Tzou, “DSP-embedded UPS controller for high-
performance single- phase on-line UPS systems,” in Proc. 28th IEEE
Annu. Conf. Ind. Electron. Soc., ... 28–38, Spring 2007.
[7] P. K. Jain, J. R. Espinoza, and H. Jin, “Performance of a single- stage UPS
system for single- phase trapezoidal-shaped AC-voltage supplies,” IEEE
Trans. Power Electron., vol....
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Tài liệu Speed Control SPC GAS SPRINGS, cushioned pptx
Ngày tải lên :
22/01/2014, 02:20
...
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...
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Chapter 9 unbalanced operation and single phase induction machines
Ngày tải lên :
16/02/2014, 18:48
...
SINGLE- PHASE INDUCTION MACHINES 367
Figure 9.8-5. Free-acceleration characteristics of a capacitor-start single- phase induction
motor.
Figure 9.8-4. Average steady-state torque versus speed ... e r abcr e r0
αβ
ωω ωω
cos( ) sin( )
(9.6-3)
SINGLE- PHASE INDUCTION MACHINES 359
out of phase when the phases are connected to the same single- phase source. This
provides a starting torque, ... capacitor in one phase (Fig. 9.8-3 ) is
superimposed upon the plot of average torque versus speed with a single- phase winding
(Fig. 9.8-2 ). The transition from capacitor-start to single- phase operation...
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Single phase fully controlled rectifier
Ngày tải lên :
14/05/2014, 22:32
... 50 mH. The motor is supplied from a single phase fully controlled
converter operating from a 230 V, 50 Hz, single phase supply with a firing angle of α =
30°. At what speed the motor will supply ... a single phase fully controlled converter the _________ of an uncontrolled converters
are replaced by ____________.
ii)
In a fully controlled converter the load voltage is controlled by controlling ... speed of the motor
and the speed of the motor at the boundary between continuous and discontinuous modes
when α = 25°.
Answer: At no load the average motor torque and hence the average motor...
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Single phase uncontrolled rectifier
Ngày tải lên :
14/05/2014, 22:33
...
Version 2 EE IIT, Kharagpur
13
The split supply full wave single phase rectifier offers as good performance as possible from a
single phase rectifier in terms of the output voltage form factor ... word(s).
i)
The output voltage form factor of a single phase full wave rectifier is ___________.
ii)
The output voltage of a single phase full wave rectifier supplying an inductive load ... and Analysis of single phase uncontrolled rectifiers
Instructional Objectives
On completion the student will be able to
• Classify the rectifiers based on their number of phases and the...
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báo cáo hóa học:" Scan speed control for tapping mode SPM" docx
Ngày tải lên :
21/06/2014, 17:20
... the step height equal to
25 nm. At a constant speed of 30 µm/s (a), with a dynamic control (b), and with a
dynamic control and at a variable speed (c).
Figure 2. Comparative line traces for ... K
τ
. 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, ... dynamic controller on ‘parachuting’ regions. Furthermore,
we propose to use variable scan speed on ‘upward step’ regions, with the speed
determined by the error signal of the closed-loop control. ...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme
Ngày tải lên :
27/10/2013, 23:15
...
3.1. The basic control format
In essence, we are endeavoring to design a controller that can vary the torque induced in
the rotor of the motor. To do this, the induction motor controller will ... for an induction
motor
An induction motor is an asynchronous AC (alternating current) motor. The least
expensive and most widely used induction motor is the squirrel cage motor. The major ... 6.10. The speed response of the control system where the proportional gain of the speed
controller is increased
As you can see, the transient response is faster as it follows the speed command...
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Phase Control IC
Ngày tải lên :
09/11/2013, 02:15
... 15.
Fully Controlled AC Power Controller
Circuit for Two High-Power Thyristors
Semiconductor Group 15
TCA 785
Half-Controlled Single- Phase Bridge Circuit with Trigger Pulse Transformer and Direct
Control ... rms
∆
V
5
30 1
430
200
75
V
k
Ω
Control input pin 11
Control voltage range
Input resistance
V
11
R
11
0.2 1
515
V
10 peak
Semiconductor Group 16
TCA 785
Half-Controlled Single- Phase Bridge Circuit with ... include
converter circuits, AC controllers and three -phase current controllers.
This IC replaces the previous types TCA 780 and TCA 780 D.
(top view)
Pin Configuration
Phase Control IC TCA 785
Bipolar...
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