Virtual Quadrature Source-Based Sinusoidal

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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

Virtual Quadrature Source-Based Sinusoidal

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