two level voltage source inverter
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
... 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 ... processor (DSP). A three -level inverter has
a large number of switching states compared to a two- level
inverter and, therefore, the SVM algorithm to be implemented in
a neural network is considerably ... large capacity three -level GTO inverter, ”
in Proc. IEEE IECON’92, 1992, pp. 271–276.
[5] Y. H. Lee, B. S. Suh, and D. S. Hyun, “A novel PWM scheme for a
three -level voltage source inverter with GTO...
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Single phase uninterruptible power supply based on z source inverter
Ngày tải lên :
03/01/2014, 19:12
... boost the capacitor voltage in the Z -source network,
maintaining the desired level of the average input voltage of the
Z -source inverter. As shown in Fig. 2, when the battery bank
voltage drops significantly ... traditional UPS with the voltage source
inverter and the proposed UPS with the Z -source inverter,
respectively, when the battery bank voltage declines by 20%
of its normal voltage. The waveform ... in
the voltage source inverter. Because of this unique feature of the
Z -source inverter, the proposed UPS can generate the desired ac
output voltage u
o
, regardless of the battery bank voltage...
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Z source inverter for UPS application
Ngày tải lên :
03/01/2014, 19:15
... a
voltage source has stiff dc source voltage at its input terminals.
A current source- fed inverter or current source inverter is fed
with adjustable dc current source. In current source inverter, ... TRADITIONAL SOURCE INVERTERS
Traditional source inverters are voltage source inverters and
current inverters. The output of voltage source inverter is a stiff
dc voltage supply, which can be a battery ... ZSI, VSI, CSI, Inverter
I.
I
NTRODUCTION
raditionally there are two inverters available.
These are voltage source inverters and current source
inverters. Each inverter has two switches...
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Current control techniques for three phase voltage source PWM converters a survey
Ngày tải lên :
03/01/2014, 19:45
... (b)
(c)
Fig. 6. Two- level hysteresis controller. (a) Block scheme. (b) Switching trajectory. (c) Number of inverter switchings
N
for a: three two- level hysteresis
comparators, b: three -level comparators ... 1964.
[20] A. M. Trzynadlowski, “An overview of modern PWM techniques for
three-phase voltage controlled, voltage- source inverters,” in Conf. Rec.
IEEE ISIE’96, Warsaw, Poland, 1996, pp. 25–39.
[21] ... current regulated PWM inverters,” IEEE Trans. Ind.
Applicat., vol. IA-22, pp. 678–690, July/Aug. 1986.
[34] D. Schauder and R. Caddy, “Current control of voltage- source inverters
for fast four-quadrant...
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Tài liệu Báo cáo khoa học: "EXTENDING KIMMO''''S TWO-LEVEL MORPHOLOGY *" doc
Ngày tải lên :
20/02/2014, 21:20
... affecting the computational complexity of the
two- level model is described in the next section.
EXTENDING THE TWO- LEVEL
MODEL
The extended two- level model presented allows
each lexical entity ...
Kimmo's two- level model.
We have implemented the extended two- level
model using the standard method of represent-
ing phonological rules by deterministic finite state
automata (Antworth, ... of the
defeasible inheritance of two- level rules.
It is easy to see that the extensions do not in-
crease the computational complexity of the basic
two- level model. We have one additional...
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Tài liệu Báo cáo khoa học: "Two-Level, Many-Paths Generation" docx
Ngày tải lên :
20/02/2014, 22:20
... we traced
generation disfluencies to two sources: 1 (1) incom-
plete or inaccurate conceptual (interlingua) struc-
tures, caused by knowledge gaps in the source lan-
guage analyzer, and (2) ... intervenes
and filters from the output all but the fluent expres-
sions. The advantage of this two- level approach is
that the knowledge bases in the generator become
simpler, easier to develop, ...
erator look like? If the generator has complete
6At least as far as the generator knows.
255
Two- Level, Many-Paths Generation
Kevin Knight
USC/Information Sciences Institute
4676 Admiralty...
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Báo cáo khoa học: "COMPUTATIONAL COMPLEXITY IN TWO-LEVEL MORPHOLOGY" pot
Ngày tải lên :
17/03/2014, 20:20
... computational characteristics of the " ;two-
level& quot; model of morphological processes. Given the kinds
of constraints that can be encoded in two- level systems,
how difficult could it be ...
Karttunen, L. (1983). "KIMMO: A Two- Level Morpho-
ã logical Analyzer,"
Texas Linguistic Forum
22:165-186.
Karttunen, L., and K. Wittenburg (1983). "A Two- Level
Morphological Analysis ... the space between two input char-
acters, a solution to the difficult Finite State Automata
Intersection problem.
58
The PSPACE-completeness reduction shows that if
two- level morphology...
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Báo cáo khoa học: "A FLEXIBLE NATURAL LANGUAGE PARSER BASED ON A TWO-LEVEL REPRESENTATION OF SYNTAX" ppt
Ngày tải lên :
18/03/2014, 02:20
... which is
stored in form of a two- level network (Lesmo,
"iklossy & Torasso 83); the external level allows
to perform the checks, whereas the internal level
carries the information ... by a decomp~
sition of the syntactic knowledge into two levels:
the first level contains structure building rules,
whereas the second level contains rules of agree
ment and rules related ... Cybernetics and Society,
Atlanta GA (1981b), 301-305.
Lesmo L., Siklossy L., Torasso P.: A Two- Level Net
for Integrating Selectional Restrictions and Sem
antic Knowledge. IEEE Int. Conf....
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Báo cáo khoa học: "A Generalised Two-Level System" potx
Ngày tải lên :
31/03/2014, 06:20
... University.
Koskenniemi, K. (1983).
Two- Level Morphology.
PhD thesis, University of Helsinki.
Lavie, A., Itai, A., and Ornan, U. (1990). On the
applicability of two level morphology to the in-
flection ... presents a generalised two-
level implementation which can handle lin-
ear and non-linear morphological opera-
tions. An algorithm for the interpretation
of multi-tape two- level rules is described. ...
The introduction of two- level morphology (Kosken-
niemi, 1983) and subsequent developments has made
implementing computational-morphology models a
feasible task. Yet, two- level formalisms fell...
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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
... single p
h
q
uency. For
t
n
t of the D
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pedance be
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m
etrical out
p
voltage con
t
o
control th
e
p
ut voltage
i
a
ge Source
I
The only d
r
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ith 3 phase
a
nels is dire
c
ations or in
t
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... Lin
k
P
V
n
n
n
k voltage
fo
d
alone
d
escribed. T
h
boost conv
e
st converter
power poin
t
p
up boost
k
capacitor o
o
f the lineari
derived. A
n
b
oth the out
p
u
t voltage d
u
r
e presented ... the DC
w
ell as dc li
summary.
T
d
escribe the
e
ad beat con
t
a
se inverter
s
d to mach f
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c
ontains the
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nk control i
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T
he control o
discrete sy
s
Figur
e
t
rol strategy...
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GRADE LEVEL CONTENT EXPECTATIONS: Grade Two docx
Ngày tải lên :
28/03/2014, 21:20
... CONTENT EXPECTATIONS 1/07 v.1 2 OF 6 MICHIGAN DEPARTMENT OF EDUCATION
GRADE LEVEL CONTENT EXPECTATIONS
HEALTH EDUCATION
Grade Two
... teacher preparation programs, focus groups of teachers and parents, and online
reviews by grade level teachers. They are aligned with the 2006 National Health Education Standards; assessment items ... community health.
Please note that, while all the Content Standards are addressed in these Grade Level Content Expectations for
Health Education as a whole, not all standards will be addressed...
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debugging with gdb - the gnu source-level debugger
Ngày tải lên :
28/04/2014, 16:49
... current working directory, then (if the program is not found) by using the
source file search path (see Section 7.3 [Specifying source directories], page 59). You can
also use the file command to load ... number of breakpoints. For
example, on the DSU, only two data breakpoints can be set at a time, and GDB
will reject this command if more than two are used. Delete or disable unused
hardware breakpoints ... . . . 179
21 Using GDB under gnu Emacs . . . . . . . . . . . 181
Debugging with GDB
The gnu Source -Level Debugger
Ninth Edition, for GDB version 5.1.1
January 2002
Richard Stallman, Roland Pesch,...
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