ac induction motor speed controller kit
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 ... 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 ... 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...
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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 ... 2002
Fig. 3. Space voltage vectors of a three-level inverter. (a) Space-vectordiagram showing different sectors and regions. (b) Space-vector diagram showing switching
states. (c) Sector
A
space vectors...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme
Ngày tải lên :
27/10/2013, 23:15
... 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.
ã TMS320F243 DSP controller. ... 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 ... nominal speed. However, outside the rated
speed operation, the flux has to be decreased like an inverse function of speed. By
weakening the rotor flux, the induction machine can reach speeds...
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Chapter 13 induction motor drives
Ngày tải lên :
16/02/2014, 18:54
... operating range of drive. In fact, the speed error using this
strategy is less than 0.1% for speed commands ranging from 0.1 to 1.0 pu—without
the use of a speed sensor.
In practice, Figure 13.2-4 ... 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 ... 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...
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Direct control methods for matrix converter and induction motor
Ngày tải lên :
13/05/2014, 00:55
... pass
filter
P
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x
PLL
P-D-
controller
Mode
selection
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Figure 7 Block diagram of DCC system (according to [6])
Start controller
End of controller
medium
error
medium ... 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 Trans. ... 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 give an overview...
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Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
Ngày tải lên :
25/01/2014, 13:20
... permanent-magnet DC velocity sensors (DC
tachometers), AC permanent-magnet tachometers, AC induction tachometers.
The permanent-magnet DC velocity sensor (DC tachometer) is a variable-inductance ... 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 ... dynamic system investigation of a DC motor using a tachometer as a speed
sensor. The tachometer is integral to the DC motor used in this case study. Other candidate
speed sensors are optical encoders...
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MOTOR START AC ELECTROLYTIC
Ngày tải lên :
15/02/2014, 09:02
... is a range of AC electrolytic capacitors.
These capacitors are most often used to provide the
torque necessary to start AC motors and in other inter-
mittent AC applications.
FEATURES:
ã Two ... (22.35) L
MOTOR START AC ELECTROLYTIC
MSC SERIES
25NTE Electronics, Inc. D Voice (800) 631–1250 (973) 748–5089 D FAX (973) 748–6224 D http://www.nteinc.com
The MSC Series is a range of AC electrolytic ... MOTOR START AC ELECTROLYTIC
MSC SERIES
27NTE Electronics, Inc. D Voice (800) 631–1250 (973) 748–5089 D FAX (973) 748–6224 D http://www.nteinc.com
330VAC Ratings and Dimensions
NTE...
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Chapter 14 permanent magnet AC motor drives
Ngày tải lên :
16/02/2014, 18:54
... or nonsinusoidal back emf waveforms.
Machines with sinusoidal back emfs may be controlled so as to achieve nearly con-
stant torque; however, machines with a nonsinusoidal back emf may be less ... particular, eventually, the
back emf of the machine will rise to the point where the inverter cannot achieve the
current command due to the fact that the back emf of the machine becomes too large. ...
current is actually obtained. An average-value model of a permanent-magnet ac motor
drive in which current tracking is not obtained is set forth in Reference 8 . Assuming
that the actual currents...
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ADAPTIVE FUZZY CONTROLLER TO CONTROL TURBINE SPEED
Ngày tải lên :
16/04/2014, 01:46
... setback is
that the rise time and the maximum overshoot
cannot be calculated. This is due to the “hill
climbing” action of the steepest descent gradient
method. However this setback was replaced ...
FUZZY CONTROLLER ON EXPERIMENT
CASE STUDY
6.1 Normalized Fuzzy Controller
To overcome the problem of PID parameter
variation, a normalized Fuzzy controller with
adjustable scale factors ... achieved.
In this paper, the supervisor controller is built
according to the accumulative knowledge of the
previous tuning methods.
The supervisor fuzzy controller has the following
parameters:...
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FPGA BASED SVPWM CONTROLLER FOR THREE PHASE AC AC MATRIX CONVERTER
Ngày tải lên :
14/05/2014, 22:37
... cùng nằm trong sector 1, theo bảng 1 các trạng thái
chuyển mạch lúc này là :
acc
→
abb
→
aca
→
aba .
acc nghĩa là pha A của tải nối với pha a của nguồn, pha
B của tải nối với pha c ...
ccc
→
acc
→
aca
→
aaa
→
aba
→
abb
→
bbb . . . .
Tương ứng với các khóa chuyển mạch như sau:
Hình 6: Sơ đồ chuyển mạch của các khóa trong 1 chu kỳ Ts
Ghi chú
:Ký hiệu SAc nghĩa ... eliminates reactive elements,” Proceedings of Powercon
7, San Diego,CA, 1980, pp. E3-1-E3-15.
[2] A. Alesina, M. Venturini, “Analysis and Design of Optimum-
Amplitude Nine-Switch Direct AC- AC Converters”,...
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AC motor doc
Ngày tải lên :
13/07/2014, 00:20
... yet subject the motor to any load.
31
EEM41 Three-phase asynchronous machines
Asynchronous motor
6
EEM41 Three-phase asynchronous machines
Asynchronous motor
What is the motor& apos;s direction ... asynchronous machines
EEM41 Three-phase asynchronous machines
Asynchronous motor
Set-up "Load characteristics" (star-delta switch)
Recording the motor& apos;s load characteristics ... asynchronous machines
Equipment: 300 W Industrial Series
SO3636-6U Active machine test stand 300 W 1 each
SE2662-2A Coupling sleeve 300 W 1 each
SE2662-7B Coupling guard 300 W 1 each
SE2672-3G
Three-phase...
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Quá trình vận hành ứng dụng Kit dùng để chuyển đổi AC sang DC trong hệ thống chuyển mạch nguồn p9 docx
Ngày tải lên :
30/07/2014, 05:20
... J.Tocci
4 – Electronic divices and circuits
- Theodore F.Bogart
5 – The 8051 Microcontroller
- I.Scott Mackenzie
...
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Quá trình vận hành ứng dụng Kit dùng để chuyển đổi AC sang DC trong hệ thống chuyển mạch nguồn p8 pot
Ngày tải lên :
30/07/2014, 05:20
... ĐỔI DA 0808
DAC 0808 có nhiệm vụ biến đổi mã nhị phân thành dòng (tín hiệu analog).
Dòng này có chiều chạy vào Iout của DAC 0808 và có cường độ thay đổi theo tỉ lệ ... vào. Khi data thay đổi từ 0 255 Iref, ở mạch dòng mã nhị phân
được đưa từ KIT 8051 qua Port A của 8255-2 để đưa vào DAC 0808.
SƠ ĐỒ BỐ TRÍ LINH KIỆN
Chương II
THIẾT KẾ PHẦN MỀM
I ... ngõ vào
để thay đổi 1 mức logic ở ngõ ra là:
AV = 5/256 20mV
5 – Maïch taïo giao tieáp với KIT 8051:
8 bit ra của 0809 được nối với PortA của 8255 –1
3 chân chọn kênh A0, A1, A2 của...
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Quá trình vận hành ứng dụng Kit dùng để chuyển đổi AC sang DC trong hệ thống chuyển mạch nguồn p7 potx
Ngày tải lên :
30/07/2014, 05:20
... chương trình chức năng chưa nạp vào EPROM
II – GIỚI THIỆU CẤU TRÚC PHẦN CỨNG KIT VI XỬ LÝ:
1 – Tần số làm việc:
Kit vi điều khiển sử dụng vi điều khiển 8051 hoặc 8951 của Intel với tần
số...
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