speed control of three phase induction motor pdf
Design and Implementation of a Three-Phase Induction Motor Control Scheme
Ngày tải lên :
27/10/2013, 23:15
... of the degree of Bachelor of Engineering (Honours)
in the division of Electrical Engineering, I present the following thesis entitled “Design
and Implementation of a Three- Phase Induction Motor ... 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. ... 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...
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Hepatitis and Liver Cancer: A National Strategy for Prevention and Control of Hepatitis B and C pdf
Ngày tải lên :
22/03/2014, 17:20
... Staff
Study Sponsors
The Centers for Disease Control and Prevention
The Department of Health and Human Services Of ce of Minority
Health
The Department of Veterans Affairs
The National Viral Hepatitis ...
Ashbel Smith Professor and
Dean Emeritus, University of
Texas, School of Public Health,
Houston, Texas
Harvey J. Alter
Chief, Infectious Diseases Sec-
tion, Department of Transfusion
Medicine, ... Bureau
of Infectious Disease Preven-
tion, Response, and Services,
Massachusetts Department
of Health, Jamaica Plain, Mas-
sachusetts
Alison A. Evans
Assistant Professor, Depart-
ment of Epidemiology...
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Báo cáo "Determining thermal expansion coefficients of three-phase fiber composite material reinforced by spherical particles " potx
Ngày tải lên :
28/03/2014, 13:20
... coefficients of three- phase composite material more
than that of two - phase composite material in [7]. So, embedding spherical inclusions into continous
matrix phase of two - phase fiber composite ... coefficients of matrix and particle phase.
2 3
,
K K
: bulk moduli of matrix and particle phase.
2 2
G
à
=
: shear modulus of matrix phase.
3
ξ
: volume fraction of particle phase.
2
α
: ... coefficients of three- phase composite
material. This resembles case 3 when letting volume fraction of the fibre phase be constant and
increasing step by step volume fraction of the particle phase. ...
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CONTROL OF WATER POLLUTION FROM AGRICULTURE pdf
Ngày tải lên :
29/03/2014, 14:20
... above.
E
CONOMICS OF CONTROL OF FERTILIZER RUNOFF
Nutrient loss is closely associated with rainfall-runoff events. For phosphorus, which tends to
be associated with the solid phase (sediment), runoff losses ... MANAGEMENT AND CONTROL
Prediction of water quality impacts of pesticides and related land management practices is an
essential element of site-specific control options and for the development of generic
approaches ... and
application of pesticides for the control of a wide variety of insectivorous and herbaceous
pests that would otherwise diminish the quantity and quality of food produce. The use of
pesticides...
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Analysis and Control of Linear Systems - Chapter 14 pdf
Ngày tải lên :
09/08/2014, 06:23
... eigenvector placement which offers more degrees of freedom.
452 Analysis and Control of Linear Systems
14.2.2.7. Summarization
The analysis of the time behavior of a controlled system was done ... eigenvector.
Figure 14.6. Shift of a set of poles with minimum dispersion
454 Analysis and Control of Linear Systems
detect the dominant modes (good degree of controllability/observability, etc; ... the
estimation
ˆ
z of z is replaced by signal z) of the following system:
⎧
⎪
⎪
⎨
⎪
⎪
⎩
˙
x = Ax + Bu
y
z
=
C
U
x +
D
0
u
[14.38]
460 Analysis and Control of Linear Systems
14.4.2. Choice of eigenvectors...
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Neuronal Control of Eye Movements - part 6 pdf
Ngày tải lên :
10/08/2014, 03:20
... made in our understanding of the
supranuclear control of eyelid function. Moreover, several lines of evidence
indicate a strong interaction between the neural control of eyelid and eye move-
ments. ... chapter has three aims. First, the current knowledge of
the anatomic and physiologic basis of eyelid movements will be reviewed, with
particular emphasis on the supranuclear control of eyelid movements ... Movements 111
Neural Control of the Eyelid
Although the position of the upper eyelid is actively controlled by several
muscles, eyelid closure (blink) is itself a passive movement of the eyelid. It
occurs...
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BIOLOGICAL AND BIOTECHNOLOGICAL CONTROL OF INSECT PESTS - CHAPTER 1 pdf
Ngày tải lên :
11/08/2014, 04:20
... benefits of a
biological control project are a function of the type and degree of damage by a pest,
efficiency of the biological control agent, market price for the crop, and risk aversion
of producers. ... history
of the use of parasitoids and predators, and the development of the field of biological
control. The next three sections deal with general concepts and challenges facing
the use of parasitoids ... heralded
form of biological control among biological control practitioners. However, in the
eyes of the general public, augmentation is more visible and recognized as a result
of the wide availability of...
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Tài liệu ime Control of a Three Phase 4 Wire PWM Inverter with Variable DC Link Voltage and Battery Storage for PV Application doc
Ngày tải lên :
19/01/2014, 02:20
... volt
e
sult of the
c
capacitor v
o
w
=2000
Ω
)
a
t
s of the dea
e
inverter c
u
r
due to loa
d
g
ure 5 show
s
o
ltage of the
R
v
=20Ω , R
w
y
namic perf
o
age is quick
c
ontrollable
o
ltage of ... o
n
h
e LC filter
a
n
ces is elim
i
a
lidity of th
e
m
ore attenti
o
n
large centr
a
e
te Ti
m
M
In
v
g
e an
d
.
Said El-
B
a
r
o
l of a three
p
o
f three pha
s
n
with batter
y
o
f a photovo
l
v
oltage ... cas
e
er of PV ge
n
r
ature and cl
ition it is ne
V-I charac
t
by the DC/
D
o
al of the s
y
h
constant a
m
p
oint of the
u
e to load u
n
a
nd midpoi
n
s
problem t
h
d
ing to load
a
r region of...
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Báo cáo y học: "Control of hyperuricemia in subjects with refractory gout, and induction of antibody against poly(ethylene glycol) (PEG), in a phase I trial of subcutaneous PEGylated urate oxidase" potx
Ngày tải lên :
09/08/2014, 07:20
... course of oral pred-
nisone. Six subjects developed gout flares during the 21-day
period of observation after injection of PEG-uricase.
Discussion
Efficacy of PEG-uricase
In this first phase I ... region
of the chromatogram to calculate the amount (pmol) of
14
C-
labeled product formed. The rate of urate oxidation in milliunits
per ml of plasma is then calculated (1 unit = 1 àmol of urate
oxidized ... http://arthritis-research.com/content/8/1/R12
Page 1 of 10
(page number not for citation purposes)
Vol 8 No 1
Research article
Control of hyperuricemia in subjects with refractory gout, and
induction of antibody against poly(ethylene...
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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
... 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 of a conventional DSP-based ... space-vector PWM controller.
Fig. 8. Segmentation of neural network output for
U
-phase
P
states.
and signals only. Similar operations are
performed with the
and signals of all the phases and all ... imple-
mentation of a three- level voltage-fed inverter. In the begin-
ning, SVM theory for a three- level inverter is reviewed briefly.
The general expressions of time segments of inverter voltage
vectors...
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DC bus control of variable speed wind turbine using a buck boost converter
Ngày tải lên :
03/01/2014, 19:15
...
Search rules of the various cases of operation are summarized
in the table I.
Fi
g.4. Operation modes of buck boost converter
2
Unlike constant -speed control, a variable -speed control can ...
Fig.5. Probable displacement of the operating point
between the operating power and the maximum power, in the
event of change of the wind speed, the control of the buck-
boost converter ... control can
adjust the speed of the turbine as the wind speed changes, so
as to operate at the peak of the Cp curve. This will maximize
the power generated for a particular wind speed, as it shown...
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