speed control of three phase induction motor using pwm ppt
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. ... outputs of an induction motor, we
can use this motor controller to control an induction machine.
ã TMS320F243 DSP controller. This is manufactured by the Texas Instruments
Company and is one of...
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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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Báo cáo hóa học: " Diagnostic evaluation of three cardiac software packages using a consecutive group of patients" docx
Ngày tải lên :
20/06/2014, 23:20
... diag-
nostic performance of the three software packages 4DM,
ECTb, and QPS for quantification of MPS using a large
group of consecutive patients. All MPS studies were
classified by three physicians with ... 1:22
http://www.ejnmmires.com/content/1/1/22
Page 5 of 7
ORIGINAL RESEARCH Open Access
Diagnostic evaluation of three cardiac software
packages using a consecutive group of patients
Lena Johansson
1
, Milan ... classifications, we used three very
Figure 1 Case illustration of three patients. The polar map for the 4DM software is shown at left, for the ECTb software at center, and for the
QPS software at right....
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Prevention and Control of poultry diseases For better farm profitability pptx
Ngày tải lên :
23/03/2014, 21:20
... prevent and control diseases
In decreased order of efficacy
In
decreased
order
of
efficacy
1. Implementing Biosecurity
2. Vaccination program
3. Medication
Often we use these three in varies ... and spread of infectious diseases
into and from a poultr
y
farm.
y
Biosecurity requires the adoption of a set of attitudes
Biosecurity
requires
the
adoption
of
a
set
of
attitudes
...
exudatesexudates
exudatesexudates
What are the costs of disease prevention & control
What
are
the
costs
of
disease
prevention
&
control
Yhldi tiYhldi ti
Y
ou s
h
ou
ld
i
nves
t
...
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Báo cáo hóa học: " Research Article Power-Constrained Fuzzy Logic Control of Video Streaming over a Wireless Interconnect" ppt
Ngày tải lên :
21/06/2014, 22:20
... 10
−4
.
3.3. Fuzzy logic control
A fuzzy subset is expressed as a set of rules which take the
form of linguistic expressions. These rules express experience
of tuning the controller and are captured ... power
(normalized)
Fuzzy
controller 1
Fuzzy
controller 2
Packet
type?
Non-scaled transmission count
Scaled transmission count
I-pic
P-pic
B-pic
ì5
ì3
ì2
Figure 2: Overview of the FLC of ARQ system.
3.4. Fuzzy logic control ... fullness
00.51
Degree of membership
0
0.5
1
Low Normal High
(a)
Normalized delay
00.51
Degree of membership
0
0.5
1
To o lo w l o w N o r m a l H i g h To o hi g h
(b)
Output of controller 1
00.51
Degree of membership
0
0.5
1
To...
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Báo cáo nghiên cứu khoa học " Diagnosis and control of diarrhoea in suckling pigs - MS 2 " ppt
Ngày tải lên :
22/06/2014, 12:20
... improve speed and accuracy
of laboratory diagnosis. The third part of the project seeks to improve the production and
efficacy of locally-manufactured E. coli vaccines. In the first six months of ... (Diagnosis and control of
diarrhoea in suckling pigs) began with three objectives to solve this problem:
1. Production and testing of locally-produced E. coli vaccines
2. Development of a management ... 12
th
to 30
th
2005
a) Brisbane: Tour of University of Qld School of Veterinary Science, University of Qld
Molecular Biosciences Precinct and Department of Primary Industry Toowoomba Veterinary...
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Physiological adaptability of three mangrove species to salt stress ppt
Ngày tải lên :
05/07/2014, 23:21
... to the activities of SOD (Figs. 6
Fig. 3 Effect of salinity on leaf transpiration rate of Sa, Sc and Rs
Fig. 4 Effect of salinity on soluble sugar content in leaves of Sa,
Sc and Rs
... 5 Effect of salinity on leaf membrance peroxidation in leaves,
stems and roots of Sa
Fig. 6 Effect of salinity on SOD activity in leaves, stems and roots
of Sa
Fig. 7 Effect of salinity ... research of Zhao
[37]
indicated that MDA content of the
plant increased with the increase of salt concentration,
whereas the activity of SOD and ATP enzyme reduced with
the increase of salt...
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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
... : Algorithm of the proposed MPPT control method.
Fig.7: Wind turbine output power without MPPT control method
for low wind speed.
Fig.8: Wind turbine output power with MPPT control method ...
output power with MPPT control method at low wind speed.
The use of the MPPT converter imposes a low DC bus voltage
to recover the wind energy at the low winds speeds.
PWM : d ‹— d
0
Measure ...
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...
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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 ... 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 ... f
o
c
ontains the
link voltage
nk control i
s
T
he control o
discrete sy
s
Figur
e
t
rol strategy
s
in [1], [2],
o
r three pha
s
current mi
n
control loo
p
s
intended s
i
f the VSI is
s
tem...
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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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- hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam
- xác định các mục tiêu của chương trình
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- khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn
- khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản
- khảo sát chương trình đào tạo gắn với các giáo trình cụ thể
- xác định thời lượng học về mặt lí thuyết và thực tế
- tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam
- điều tra đối với đối tượng giảng viên và đối tượng quản lí
- điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1
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- nội dung cụ thể cho từng kĩ năng ở từng cấp độ
- xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct
- phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ
- mở máy động cơ lồng sóc
- mở máy động cơ rôto dây quấn
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- đặc tuyến hiệu suất h fi p2