virtual quadrature source-based sinusoidal
TRANSCRIPT
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Virtual Quadrature Source-Based Sinusoidal
Modulation Applied to High-Frequency Link
Converter na!ling Ar!itrary "irectAC-AC #o$er Conversion
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Presentation by,%&Anand'u(ar
) M *#"+
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CONTENTS
,!ective
)ntroduction
Literature revie$
.isting syste(
"ra$!acks #roposed syste(
Advantages
Circuit "iagra(
Modes o/ ,peration
Si(ulation diagra(
0esults
Conclusion
0e/erences
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OBJECTIVES
%o i(prove the per/or(ance o/ ac-ac converters !y eli(inating
the dc link capacitor
%o provide !i-directional po$er /lo$
%o trans/er one unregulated sinusoidal voltage $ith high %H"
into another regulated sinusoidal voltage $ith lo$ %H" at sa(e
/requency
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INTRODUCTION
AC-AC Converter
A(plitude2 phase angle even the /requency o/ the ac output voltage
Appliations lectric grid
)ndustries
"o(estic uses
AC (otor drives
#o$er line conditioning
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!ITERATURE REVIE"
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!ITERATURE SURVE#
S$N
o
AUT%OR &ET%ODO!O'# BENE(ITS NE'ATIVE ASPECTS
3& %& "& 4guyen2 4atin2 and 5&Friedrich2*6an 1738+
.tended dou!lecarrier #9M strategydedicated to 0MScurrent reduction in"C Link capacitors o/three-phase inverters2
Superiority inHar(onic
per/or(ance2 dyna(icresponse2Voltage utili:ation
lectrolytic capacitors arerequiredstorage capacitorsShort li/eti(e#oor per/or(ance at highte(peratures
1& H&Akagi2;&'ana:a$a2A&4a!ae2 Arasai2
6&Sastry2"& "ivan*"ec 1737+
%hree-phase ACvoltage inputs oroutputs are !alanced
0eactive po$er /lo$!et$een ar(s o/ theinverter
"C side capacitorvolu(e reduced
#er/or(ance sacri/icedVulnera!le - grid i(!alance2grid voltage /ault
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!ITERATURE SURVE#
S$No AUT%OR &ET%ODO!O'# BENE(ITS
NE'ATIVE
ASPECTS
ac topology
si(pler structure (ainly /ocus on theapplications $here onlygeneration o/ the
/unda(ental voltage
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E)ISTIN' S#STE&
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BAC* TO BAC* CONVERTER
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Ba+ to Ba+ onverter it . lin+ apaitor
RECTIFICATION DCLINK
INVERSION
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B!OC* DIA'RA& O( PROPOSED
S#STE&
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INPUT SIDE
CONVERTER !OAD
%I'%
(RE/UENC#!IN*
OUTPUT
SIDECONVERTER
AC
SOURCE
PU!SE 'ENERATOR
AC-AC CONVERTER
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CIRCUIT DIA'RA&
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)4#?% #?SH #?LL
C,4V0%0
,?%#?% #?SH #?LL
C,4V0%0
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&ODES O( OPERATION
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POSITIVE STA'E
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NE'ATIVE STA'E
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0ERO STA'E
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ADVANTA'ES
#ush-pull trans/or(ers and /ilters are (uch s(aller than standard /or$ard
converter /ilters
Volu(e and $eight reduced
,verall si:e and cost reduced
Syste( relia!ility can !e enhanced
Lo$ output ripple current
Si(ple gate drive
Large achieva!le duty cycle range
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%AR&ONICSAND ITS E((ECTS
Proble1s a2se. by ar1oni 2rrents
,verloading o/ neutrals
,verheating o/ trans/or(ers
4uisance tripping o/ circuit !reakers
,ver-stressing o/ po$er /actor correction capacitors Skin e//ect
Proble1s a2se. by ar1oni volta3es
Voltage distortion
ddy current loss in )nduction (otors
@ero-crossing noise
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S#STE& CON(I'URATION "IT%
PROPOSED CONVERTER
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SIMULATION DIAGRAM OF
CONVERTER
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SI&U!ATION DIA'RA&
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SI&U!ATION DIA'RA& O(
CONTRO!!ER
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INPUT "AVE(OR&
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INPUT CURRENT T%D
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OUTPUT "AVE(OR&
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OUPUT CURRENT T%D
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CONC!USION
A ne$ "irect AC-AC high /requency converter is proposed&
%he proposed converter $hich can trans/er one unregulated sinusoidal
voltage $ith high %H" into another regulated sinusoidal voltage $ith lo$
%H" at sa(e /requency&
%he proposed converter has si(ple topology2 t$o stage po$er conversions&
Bi-directional po$er /lo$2 high /requency electrical isolation and good line
current $ave/or(&
%he cost2 $eight and the si:e o/ syste( reduced&
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RE(ERENCES ;ao Sun2 Me(!er2 )2 ing Li2 Mei Su2 Hui 9ang2 Han!ing "an2 And 9ening
iong2 )ndirect Matri. Converter-!ased %opology And Modulation Sche(es For
nhancing )nput 0eactive #o$er Capa!ility2 ) %ransactions ,n #o$erlectronics2 Vol&
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RE(ERENCES
%& "& 4guyen2 4& #atin2 and 5& Friedrich2 .tended dou!le carrier #9M
strategy dedicated to 0MS current reduction in "C Link capacitors o/ three-
phase inverters2 ) %rans& #o$er lectron&2 vol& 1D2 no& 32 pp& 87G2
6an& 1738&
F& Mancilla-"avid2 AC link vector s$itching converters /or po$er /lo$
control and po$er qualityI A revie$2 in #roc& ) 4orth A(er& #o$er
Sy(p&2 177D2 pp& 3>&
0& '&5upta2 '& '& Mohapatra2 A& So(ani2 and 4& Mohan2 "irect-
(atri.converter-!ased drive /or a three-phase open-end-$inding AC (achine
$ith advanced /eatures2 ) %rans& )nd& lectron&2 vol& =2 no& 312pp&
8787812 "ec& 1737&
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Thank
you