Apostila de Eletrônica de Potencia Capítulo 3- 2008.doc

8/17/2019 Apostila de Eletrônica de Potencia Capítulo 3- 2008.doc

1/31

CAPÍTULO 3CONVERSORES AC/DC

3.1 – INTRODUÇÃO.

Com o avanço da t!no"o#$a d $nt#%aç&o' m "a%#a (!a"a' o( )%o*t$(ta( o( +a,%$!ant( d -$)amnto( "t%n$!o( +o%am !on($d%ando o taman0o o )(odo( (( )%odto( !omo ma !a%a!t%(t$!a $m)o%tant.

Con+o%m )(-$(a( dt!ta%am' a( +ont( d a"$mntaç&o %am a( )a%t(ma$o%( ma$( )(ada( do( -$)amnto(. I(to ( dv$a a )%(nça d #%and(t%an(+o%mado%(' d$(($)ado%( vnt$"ado%(.

Pa%a ()"anta% (t( )%o,"ma(' na d2!ada d 4' a( +ont( !0avada(!omça%am a (% d(nvo"v$da(. P%$m$%amnt )a%a (o no( )%o#%ama( ()a!$a$(

)o(t%$o%mnt ( 5)and$ndo )a%a ot%a( a)"$!aç6( ta$( !omo7

8 Com)tado%( m$!%o!om)tado%(98 P%$+2%$!o( :$m)%((o%a(' mon$to%(' t!;98 E-$)amnto( d t"!omn$!aç6(98 T"v$(o%(98 Vdo8#am(98 E-$)amnto( m2d$!o(98 Av$6( ($m$"a%(98 E-$)amnto( m$"$ta%(98 Vdo8!a((t98 Som98 Et!.A"2m d$(to' a( +ont( !0avada( (&o "a%#amnt m)%#ada( !omo +ont( d

a"$mntaç&o )a%a o( !$%!$to( d !omando d !ont%o" d !onv%(o%( d ma$o% )ot


2/31

ENTRADA SAÍDA DENOFINAÇÃODC DC R#"ado% DC/Conv%(o% DCDC AC Inv%(o% AC DC Gont :Rt$+$!ado%;

AC AC R#"ado% ACTam,2m )odm +o%n!% !o%%nt !on(tant' ma( 2 ,a(tant %a%a.A( +ont( DC/DC (&o dnom$nada( %#"ado%( DC' -ando t$"$=amo(

%#"ado%( (2%$ )a%a o,t%mo( a( tn(6( m (a (ada. ando t$"$=amo( +ont(!0avada(' (&o dnom$nada( d !onv%(o%( DC.

A( +ont( DC/AC (&o dnom$nada( $nv%(o%( )o((m "a%#o m)%#o!omo va%$ado%( d +%-


3/31

!o%%nt( Iom$n Ioma5. Podmo( d+$n$% %#"aç&o da tn(&o d (ada m %"aç&oa va%$aç6( d !a%#a )o%7

x100%Vo

Voc=reg ∆

:3.1;

Pod8( d+$n$%' tam,2m' a %#"aç&o !ont%a tn(&o d nt%ada Vo$. S)ondoa !o%%nt d (ada +$5a va%$ando8( a tn(&o d nt%ada nt% va"o%( V$m$n V$ma5 o,t2m8( ∆Vo$ !omo mo(t%a a +$#%a 3..

G$#%a 3. 8 %@+$!o da Tn(&o d Sada Tn(&o d Ent%ada.

A %#"aç&o d nt%ada 2 dada )o%7

x100%Vo

Voi=reg ∆

:3.;

3.3. 8 LIFITAÇÃO DE CORRENTE

Toda +ont d tn(&o )o(($ m "$m$t m@5$mo d +o%n!$mnto d !o%%nt' -ando 2 at$n#$do (t )onto' a +ont (t@ +n!$onando no modo d "$m$taç&o d!o%%nt. E5$(tm' ,a($!amnt' t%


4/31

G$#%a 3. 8 Va%$aç&o da Co%%nt m C$%!$to S$m)"$+$!ado m S$taç6( Ra$(.

S a va%$aç&o +o% no (nt$do d d$m$n$% a !o%%nt' d@8( o nom d"$m$taç&o d !o%%nt QGo"d8,a!Q. E(t modo tm a vanta#m d d$m$n$% a

)ot


5/31

O QD%$+tQ 2 a m@5$ma va%$aç&o na (ada da +ont d%ant m )%odo d(ta,$"$=aç&o a)( "$#ado' (m - 0a*a $n+"


6/31

3..1 8 GONTE SRIE

A +ont (2%$ o +ont "$na% !on($(t m t$"$=a% m "mnto d !ont%o"-' !o"o!ado m (2%$ !om a !a%#a' +aça !om - a tn(&o n(ta (*a !on(tant

$nd)ndnt do va"o% da !a%#a.A +$#%a 3. mo(t%a o d$a#%ama d ,"o!o( da +ont (2%$ o "$na%.

G$#%a 3. 8 D$a#%ama d >"o!o( d ma Gont d A"$mntaç&oS2%$ o L$na% R#"ada.

N(ta( +ont(' (&o n!((@%$a( a( t$"$=aç6( d t%an(+o%mado%( d ,a$5a+%-


7/31

G$#%a 3. 8 E(-ma E"2t%$!o d ma Gont Pa%a""a.

No%ma"mnt' (t t$)o d +ont ( 2 t$"$=ado )a%a )-na( !o%%nt('ond a +$!$


8/31

G$#%a 3.M 8 E(-ma E"2t%$!o da Gont G%%o8R((onant.

O !$%!$to da +$#%a 3.M t%a= o (-ma "2t%$!o - %)%(nta o+n!$onamnto d(t t$)o d +ont.

O !$%!$to LC %((oa na +%-


9/31

t$)o d +ont !0avada.3.. 8 GONTES CBAVEADAS

O +ato ,@($!o - %# o +n!$onamnto da( Gont( C0avada( :o

!omtada(;' (t@ na !a)a!$dad d a%ma=namnto d n%#$a m !a)a!$to%( :m+o%ma d tn(&o; m $ndto%( :m +o%ma d !o%%nt;.A(($m' !om a !o"o!aç&o d !a)a!$to%( na (ada da( +ont(' !on(#8(

,a$5a ond"aç&o :%$))"; ,oa )%+o%man! -anto a t%an($nt( d !o%%nt. [@' o($ndto%( (&o (ado( )a%a t%an(+%


10/31

G$#%a 3.1 8 T$)o( d Conv%(o%( !om I(o"aç&o ma$( Ut$"$=ado(7a; Go%a%d9 ,; Go%a%d a T%an($(to%(9 !; F$a Pont 9

d; Pont Com)"ta 9 ; P(08P""9 +; C%%nt8Gd P(08P""9#; G"\,a!9 0; G"\,a! a T%an($(to%(.

O d$a#%ama d ,"o!o( d ma +ont !0avada !om $(o"amnto 2 mo(t%adona +$#%a 3.13.

G$#%a 3.13 8 E(-ma >@($!o d ma Gont C0avada.


11/31

N(t (-ma' a tn(&o d "$n0a :AC; 2 %t$+$!ada +$"t%ada' d$%tamnt' )%od=$ndo ma tn(&o DC d va"o% "vado - 2 !o"o!ado (o,% ma !0av:t%an($(to% o mo(+t;. A !0av +n!$ona m +%-


12/31

Como v$(to ant%$o%mnt' 5$(tm ata"mnt m$to( t$)o( d +ont(!0avada( o )%o*t$(ta dv toma% !$dado na (!o"0a do - m"0o% )%n!0a o(%-$($to( d (a ()!$+$!aç&o.

No d(nvo"v$mnto d -$)amnto(' no%ma"mnt' a +ont 2 a "t$ma

)a%t do )%o*to' ma( -ando ( t%ata d m -$)amnto d #%and )o%t' (( )%o!d$mnto )od%@ "va% a m %%o #%av no !%ono#%ama +$na" do )%odto.A !ada d$a o,(%va8( o amnto na (o+$(t$!aç&o do( -$)amnto( !ada

v= ma$( 0@ a n!(($dad d +ont(' - o!)m o mno% ()aço )o((v"' "v( !onom$!amnt v$@v$(. A( +ont( !0avada( a)%(ntam o m"0o% %("tado-ando !om)a%amo( )(o' taman0o )%ço' !ont%a ot%o( t$)o( d +ont( -

)o((am (% t$"$=ada(' "vando m !onta o !(to do )%o*to' !(to d )%odç&o'($m)"$!$dad d mantnç&o ot%a( !a%a!t%(t$!a( d !ada )%o*to. D modo#%a"' ata"mnt' a( +ont( !0avada( (&o !onom$!amnt t$"$=@v$( a!$ma d 34att( )a%a +ont( AC/DC 14 att( )a%a +ont( DC/DC.

A ta,"a 3.1' mo(t%a m -ad%o !om)a%at$vo da( !a%a!t%(t$!a( da( +ont(d(!%$ta(7

TA>ELA 3.1 – ad%o Com)a%at$vo.

SRIE :LINEAR;

SCR CBAVE8ADA

GERRO8RESSON.

SRIERESSON.

CUSTO DEDESENVOL8VIFENTO

>AI^O >AI^O ALTO FDIO ALTO

TAFANBO RANDE RANDE PEUENA RANDE PEUENA

PESO PESADA PESADA LEVE PESADA LEVE

RENDI8FENTO

RUIF >OF _TIFO >OF _TIFO

REU8LAÇÃO

_TIFA >OA FUITO >OA

REULAR >OA

RUÍDO SEFPRO>LEFA

SEFPRO>LEFA

PRECISADE GILTRO

SEFPRO>LEFA

SEFPRO>LEF

FANU8TENÇÃO

G]CIL G]CIL DIGICIL G]CIL DIGÍCIL

3.J 8 A GONTE CBAVEADA

3.J.1 8 INTRODUÇÃO.

N(t t)$!o' (%@ d(nvo"v$do m (tdo' (#$ndo o d$a#%ama d ,"o!o(

da +$#%a 3.1J.M


13/31

G$#%a 3.1J 8 D$a#%ama d >"o!o( d ma Gont C0avada T)$!a.

Pa%a ( +ta% m )%o*to d ma +ont !0avada' a"#ma( ta)a(+ndamnta$( dvm (% (#$da(' ta$( !omo7

A; E()!$+$!aç6(8 Tn(6( !o%%nt( d (ada98 G%-; D+$n$% 8 To)o"o#$a do !onv%(o%98 G%-


14/31

E; C@"!"o do T%an(+o%mado% d I(o"amnto

G; C@"!"o do E(t@#$o d Sada

8 Rt$+$!ado%98 Indto% !a)a!$to% d G$"t%a#m.

; C$%!$to d Comando d >a( o at$"0o :at;

B; P%o*to do C$%!$to d Com)n(aç&o8 E(ta,$"$dad %()o(ta t%an($t%$a.

I; E(!o"0a do CI8PF C@"!"o do( Com)onnt( E5t%no(

[; P%o*to do( C$%!$to( d P%otç&o

?; C@"!"o d Gont A5$"$a%' -ando n!((@%$o.

L; Dt%m$naç&o do G$"t%o d R@d$o G%-


15/31

tn(&o d 4V +!0ada )a%a tn(&o d 114V.

3.J.. 8 GUNCIONAFENTO COFO RETIGICADOR DE ONDA COFPLETA.

Ana"$(ando $n$!$a"mnt o +n!$onamnto !om a !0av S a,%ta :4V;. A(+o%ma( d onda da tn(&o da !o%%nt no( !a)a!$to%(' (&o a)%(ntado( na +$#%a3.1.

G$#%a 3.1 8 Tn(&o Co%%nt no( Ca)a!$to%( :C -$va"nt;.

A !a)a!$tYn!$a -$va"nt 2 dada )"a -aç&o 3..

C =C1.C2

C1+ C2:3.;

A n%#$a a!m"ada m !ada (m$!$!"o )od (% dada )o%7

]Vmin-Vpk C(

2

1=

2

Win 22 :3.J;

Ond7$n/ 8 En%#$a a!m"ada m C a !ada m$o )%odo da %d.

Sa,8( -7

Win = Pin

f :3.;

A tn(&o 2 dada )o%7

Vmin = Vpk. (2 f.tc!o( π :3.;

H


16/31

O tm)o )od (% dado )"a -aç&o 3.H.

f 2

(Vmin!Vpk=tc

-1

π

!o(:3.H;

Ond7t! 8 $nt%va"o d !ondç&o do( d$odo( o tm)o d !a%#a d C.

A !a%#a - o !a)a!$to% a,(o%v !d a !ada m$o !$!"o d +n!$onamntoda %d 2 !a"!"ado )"a -aç&o 3.M

∆ ∆" = ic#g.tc = c. V :3.M;E a !o%%nt )od (% (t$)"ada )o%7

ic#g =C. V

tc =

C.(Vpk - Vmin

tc

∆:3.14;

Ond7$!0# P$!o da !o%%nt $' d%ant o $nt%va"o t!.

I#a"ando8( 3.J 3. o,t2m8(7

C( Vpk - Vmin = Pin

f 2 2 :3.11;

Po%tanto7

C = Pin

f.( Vpk - Vmin 2 2 :3.1;

Con($d%ando7

I!0# 8 Va"o% +$!a= da !om)onnt a"t%nada da !o%%nt $.

IDC 8 Va"o% m2d$o d $.IET 8 Va"o% +$!a= da !o%%nt tota" d !a%#a do !a)a!$to%.

Ent&o7 $c#g + $C = $&'

222 :3.13; $C - $&' = $c#g 22 :3.1;

Fa(7

$C = ic#g.2.tc

' :3.1J;

'

2.tcic#g.= $&' :3.1;

Po%tanto7

$c#g = ic#g .2.tc

' - ic#g .

.tc

'

2 22

2:3.1;

$c#g = ic#g 2.tc. f - (2.tc. f2 :3.1H;

No !a)a!$to% !$%!"a a)na( a !om)onnt a"t%nada da !o%%nt $' - )%od= )%da( m (a %($(t


17/31

!om)onnt tm a +o%ma %)%(ntada na +$#%a 3.1H.

G$#%a 3.1H 8 Co%%nt Cd$da )"o E(t@#$o d Ent%ada.

Pin = ipk.V. % :3.1M;Sndo7

D 8 Ra=&o C!"$!a :Dt\ C\!";.A(($m7

ipk = Pin

V.:3.4;

Pa%a Dm@5 4'J ' V Vm$n' nt&o7

ipk = 2.Pin

Vmin:3.1;

O va"o% +$!a= d((a !o%%nt' 2 dado )"a -aç&o :3.;7

$cef ='

i dt '

ipk t ipk ' '

ipk )*

'

' 1 1 1D

4

D4

1 D D

∫ = = =. . . :3.;Po%tanto7

$cef ipk )* = . :3.3;Sa,8( -7

Pin = Pot

η :3.;

Ond7Pot Pot


18/31

A tn(&o d )$!o %v%(a m !ada d$odo 2 $#a" W V).

3.J...1 8 E^EFPLO NUFRICO.

S*a o (t@#$o d nt%ada d ma +ont !0avada' !om o( (#$nt( dado(7Va! 11JV ' Va!m@5 13J V Va!m$n MH V' Pot J4 ' Vm$n 14J V' + 4 B=' η4'.

a; C@"!"o d P$n7P$n Pot/η J4/4' 1'J

,; Dt%m$naç&o da Ca)a!$tYn!$a C7

C = Pin

f.( Vpk - Vmin

2 2

Vpk = 2 .Vacmin = 2 ., = 1,V

Con($d%ando8( a( -da( d tn(&o no( d$odo( no( dma$(!om)onnt(' adota8(7

V) 13JVEnt&o7

∆V V) 8 Vm$n 13J814J 34V

C = /1

0.( 1 - 10 1 *

2 2 ≅ µ

C1C C 334 µG!; Dt%m$naç&o d t! :-. .J;7

tc =

( 10

1

// = 10ms

-1!o(

d; C@"!"o d $!0#7

ic#g =C. V

tc=

1.10 .0

10.10= 2/)

-

-

∆

; C@"!"o d I!0#7 $c#g = ic#g. 2.tc. f - (2.tc. f

2

2.tc. f = 2.10.10 .0 = 021-

$c#g = 2/. 021 - 021 = 11)2

+; C@"!"o d I!+ AG7Adotando D4'J.

ipk Pin

V )= = =

.

'

. ' '

P1 J

14J4 J 1 3

$cef ipk ) )* = = =. ' . ' '1 3 4 J 4 M

#; C@"!"o da Co%%nt +$!a= tota" no !a)a!$to% no d$odo7

$cef = $cef + $c#g = 0 + 11 = 1 )2

)* 2 2 2

M OH

HJ


19/31

$def = ic#g.tc

' = 2/. 10.10 .0 = 0,)

-

0; Co%%nt d )$!o %)t$t$vo m !ada d$odo7 $pico = ic#g = 2/)

$; C@"!"o da !o%%nt m2d$a no d$odo.

)0=2.

/1=

2.V

Pin= $md

MH

*; C@"!"o da Tn(&o m@5$ma no( d$odo(7Vmax = Vpkmax = 2 .Vacmax = 2 .1 1,1V ≅

3.J..3 8 GUNCIONAFENTO COFO DO>RADOR DE TENSÃO

N(t !a(o a !0av S 2 +!0ada. O( !$%!$to( n(ta( !on+$#%aç6( (&oa)%(ntado( na +$#%a 3.1M.

G$#%a 3.1M 8 Gn!$onamnto !omo Do,%ado% d Tn(&o.Como )od (% v$(to na +$#%a 3.1M' !ada !a)a!$to% 2 !a%%#ado m !ada

(m$8!$!"o da tn(&o d nt%ada. D%ant o (m$8!$!"o )o($t$vo o !a)a!$to% C1%!, n%#$a v$a d$odo D1. D%ant o (m$8!$!"o n#at$vo' o !a)a!$to% C %!,n%#$a v$a d$odo D.

A(($m' d%ant o (m$8!$!"o )o($t$vo a tn(&o v!1 no !a)a!$to% C1 at$n# atn(&o d )$!o da %d' o m(mo a!ont! !om a tn(&o v! no !a)a!$to% Cd%ant o (m$8!$!"o n#at$vo.

A( +o%ma( d onda da( d$v%(a( tn(6( nvo"v$da( na %t$+$!aç&o naH


20/31

+$"t%a#m (t&o %)%(ntada( na +$#%a 3.4.

G$#%a 3.4 8 Tn(6( )a%a o Gn!$onamnto !om Do,%ado% d Tn(&o.

A tn(&o mn$ma at$n#$da )"o !on*nto 2 dada )"a -aç&o 3.347

Vc1pk = Vc2pk :3.H;Vc1 = Vc2m$n m$n :3.M;

2

Vc2pk +Vc2+Vc1=Vcmin

m$nm$n :3.34;

S,(t$t$ndo :3.H; :3.M; m :3.34; tm8(7

Vc1pk -2Vcmin=Vc1m$n :3.31;

A n%#$a +o%n!$da )"o !a)a!$to% m !ada m$o !$!"o 2 dada )"a -aç&o:3.3;.

W

2

= 1

2

.C1.(Vc1 pk - Vc1 2 2

m$n :3.3;

W = Pin

f :3.33;

Ent&o7

C1 = C2 = Pin

f.(Vc1 pk - Vc1 2 2

m$n:3.3;

A +o%ma d onda da !o%%nt na (ada do %t$+$!ado% (t@ %)%(ntada na+$#%a 3.1.

H


21/31

G$#%a 3.1 8 Co%%nt na Sada do Rt$+$!ado%.

Ana"$(ando8( )a%a a m@5$ma )ot


22/31

-aç&o :3.;. $C ef = $ef + $cef 2 2 )* 1 :3.;

E^EFPLO DE C]LCULO PARA O DO>RADOR DE TENSÃO.

Va! 11J V9 Va!ma513J V 9 Va!m$n MH V 9 + 4 B= 9Pot J4 9 η 4' V!m$n 14 V.

a; Tn(&o d )$!o tn(&o mn$ma d !ada !a)a!$to%7VC pk V 1 D MH 13M= =.

Con($d%ando8( a( -da( d tn(&o no( d$odo( na( %($(t


23/31

3.J.. 8 CORRENTE DE INRUSB :Co%%nt d S%to;

O (t@#$o d nt%ada (t@ mo(t%ado na +$#%a 3..

G$#%a 3. 8 E(t@#$o d Ent%ada.

D%ant o )%o!((o d (!o"0a do !a)a!$to% C d@8( )%$o%$dad )a%a o!a)a!$to% d mno% va"o% )o((v" d RSE :%($(t


24/31

t%m$(to% !om !o+$!$nt n#at$vo ' a(($m' d%ant o (%to' (a %($(t


25/31

G$#%a 3.J 8 E5m)"o d C$%!$to d D$()a%o do T$%$(to%.

Na +$#%a 3.' -ando C n!ont%a8( d(!a%%#ado' a +ont !omça a+n!$ona%. I(to a!ont! (m - o t%an($(to% T ( n!ont% m +n!$onamnto. E(tt%an($(to% ( (%@ !o"o!ado m +n!$onamnto -ando o !a)a!$to% C d nt%ada *@ (n!ont%a% !a%%#ado' nt&o !om o !0avamnto d T' a)a%! ma tn(&o non%o"amnto - (t@ !on!tado o TRIAC' +o%n!ndo !o%%nt d #at$"0o' d(taman$%a " nt%a m !ondç&o o %($(to% R1 2 )%at$!amnt !%to8!$%!$tado.

Na +$#%a 3.J' -ando o !a)a!$to% (t@ d(!a%%#ado' " 2 )%at$!amntm !%to8!$%!$to toda a tn(&o (t@ (o,% R1. Dv$do a tn(&o (o,% R1' o d$odo=n% ` nt%a m !ondç&o' !o"o!ando o t%an($(to% T% m !ondç&o !%to8!$%!$tando C. A(($m (ndo' nn0m )"(o d #at$"0o 2 a)"$!ado ao t$%$(to% T0.ando a tn(&o no !a)a!$to% at$n# m va"o% - ,"o-$a o d$odo =n%' C (!a%%#a' )o% R' at2 o va"o% d 34 V -ando o t$%$(to% %!, o )"(o no #at$"0o 2!o"o!ado m !ondç&o' !%to8!$%!$tando o %($(to% R1.

3. 8 O CONVERSOR >OOST COFO PR8REULADOR DE ENTRADA.

O !onv%(o% >OOST +n!$onando no modo !ontno 2 t$"$=ado !omo

%t$+$!ado% d nt%ada' )o$( (t !onv%(o% )o(($ m $ndto% na nt%ada' +a=ndo!om - a !o%%nt d nt%ada (*a !ontna' !om $((o (%@ ,a(tant %d=$da ad%$vada d !o%%nt na nt%ada' !on(-ntmnt tm8( mno% )o"$ç&o0a%mn$!a.

At%av2( do !ont%o" PF' )od8( mon$to%a% a !o%%nt d nt%ada )o% m$o d m (n(o% d !o%%nt' o,tndo nt&o ma !o%%nt d nt%ada (no$da" +ato% d )ot


26/31

>OOST PF !onvn!$ona" no modo !ontno' (ndo a(($m' )a%a ( o,t% a!o%%nt d nt%ada (no$da" m +a( !om a tn(&o d nt%ada' ,a(ta +a=% ((a!o%%nt (#$% ma !o%%nt d %+%


27/31

A Fod"aç&o )o% 0$(t%( a)"$!ada ao !onv%(o% >OOST PF!onvn!$ona" 2 mo(t%ada na +$#%a 3..

G$#%a 3. 8 Conv%(o% >OOST PF Convn!$ona" !om Co%%ç&o do Gato%

d Pot


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G$#%a 3.H 8 Conv%(o% >OOST !om Fod"aç&o da Ra=&o C!"$!a Sno$da".

Pa%a v%$+$!a% o !om)o%tamnto da !o%%nt d nt%ada' +=8( a ($m"aç&odo !onv%(o% >OOST PF !onvn!$ona" t$"$=ando8( a Fod"aç&o (no$da".

A ($m"aç&o %(t%$n#$8( a)na( m mo(t%a% o )%$n!)$o d Fod"aç&o (ma )%o!)aç&o d ot$m$=aç&o do( va"o%( d $ndto%( !a)a!$to%(.A +$#%a 3.M mo(t%a o %("tado da ($m"aç&o do !onv%(o% >OOST !om

Fod"aç&o (no$da" !om o( (#$nt( )a%Ymt%o(7 L1 1 mB' Co 144 µG' Ro 3J4 Ω ' V$ 311(n:3t; Vo 3J4 V.

G$#%a 3.M 8 Go%ma( d Onda da Co%%nt d Ent%ada do Conv%(o%>OOST !om Fod"aç&o Sno$da".

O,(%vaç6( )a%a o m2todo da Fod"aç&o )o% "a%#%a d )"(o (no$da"78 Ra=o@v" +ato% d )ot


29/31

G$#%a 3.34 8 Go%ma( d Onda da Co%%nt )"o F2todo dCont%o" )"o P$!o d Co%%nt.

Ond78 Im2d$o 8 !o%%nt m2d$a98 IL1 8 !o%%nt a (% mon$to%ada98 T 8 )%odo d o)%aç&o.

A a)"$!aç&o d(t m2todo no !onv%(o% >OOST PF !onvn!$ona" 2mo(t%ado na +$#%a 3.31.

O,(%vaç6( (o,% o m2todo d !ont%o" )"o )$!o d !o%%nt78 A"to +ato% d )ot


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G$#%a 3.3 8 Fon$to%aç&o da Co%%nt )"o F2todo dCont%o" da Co%%nt F2d$a.

A a)"$!aç&o d(t m2todo no !onv%(o% >OOST PF !onvn!$ona" 2

mo(t%ado na +$#%a 3.33.

G$#%a 3.33 8 Conv%(o% >OOST Ut$"$=ando o F2todo dCont%o" )"a Co%%nt F2d$a.

O,(%vaç6( (o,% o m2todo d !ont%o" )"a !o%%nt F2d$a.8 A"to +ato% d )ot


31/31

(#$nt( !a%a!t%(t$!a(7 1VAC ± 14K4VAC ± 14KRIPPLE7 14K

Pot 1444G4 B=ηMJK

; No 5%!!$o 1' -a" o va"o% m@5$mo - a !o%%nt d $n%(0 )od at$n#$% nomomnto m - o %t$+$!ado% 2 "$#ado na %d a" (%$a a (o"ç&o )a%a "$m$ta% ((a !o%%nt dnt%o d va"o%( - n&o dan$+$-m o( d$odo(

3; Ca"!" o b0o"d) t$mc )a%a ma va%$aç&o d 4V na (ada do %t$+$!ado%.

MH

Documents

Apostila de Eletrônica de Potencia Capítulo 3- 2008.doc