power electronics iii

8/13/2019 Power Electronics III

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Ior Korg Dgtamh0 - www.curuepo.bok

1Fmyajms Tlmje Tlaje


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6 ^owgr Ghgbtrojmbs

Fmyajm's Tlmje TajeBojbgpt fasgd jotgs

^owgr Ghgbtrojmbs MMM

(F.Tgbl Ytl Rgk, BR)

Apoorva Cupta

Asst. ^roigssor

Dgptt. oi Gjcmjggrmjc

Fmyajm Mjtgrjatmojah Mjstmtutg oi Gjcmjggrmjc ajd Tgbljohocy


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ûfhmslgd fy 0

Tlmje Tajes

Fmyajm Croup oi Bohhgcgs

Bojbgpt & Bopyrmclt 0

Fmyajm Rlmeslaj Rakmtm

Rgbtor-2, Ymdlyadlar Jacar,

@ampur-2>6 >62 (Vaàstlaj)

^l 0 >141-6223

G-kamh 0 abadNfmyajmbohhgcgs.orc

Sgfsmtg 0www.curuepo.bok5 www.fmyajmbohhgcgs.orc

Gdmtmoj 0 6>16

Hgasgr Typg Rgttgd fy0

Fmyajm Bohhgcg ^rmjtmjc Dgpartkgjt

Slmhg gvgry giiort ms taegj to avomd grrors or okmssmojs mj tlms ûfhmbatmoj, ajy kmstaeg or

okmssmoj tlat kay lavg brgpt mj ms jot mjtgjtmojah. Mt kay fg taegj jotg oi tlat jgmtlgr tlg

pufhmslgr jor tlg autlor wmhh fg rgspojsmfhg ior ajy dakacg or hoss oi ajy emjd armsmjc to

ajyojg mj ajy kajjgr oj abboujt oi subl grrors ajd okmssmojs.


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4 ^owgr Ghgbtrojmbs

^rgiabg

M ak chad to prgsgjt tlms fooe, gspgbmahhy dgsmcjgd to sgrvg tlg jggds oi tlg studgjts.Tlg fooe las fggj wrmttgj eggpmjc mj kmjd tlg cgjgrah wgaejgss mj ujdgrstajdmjc tlg

iujdakgjtah bojbgpts oi tlg topmbs. Tlg fooe ms sghi-gxphajatory ajd adopts tlg Tgabl

]oursghi styhg. Mt ms fasgd oj qugstmoj-ajswgr pattgrj. Tlg hajcuacg oi fooe ms qumtg gasy

ajd ujdgrstajdafhg fasgd oj sbmgjtmimb approabl.

Ajy iurtlgr mkprovgkgjt mj tlg bojtgjts oi tlg fooe fy kaemjc borrgbtmojs, okmssmoj

ajd mjbhusmoj ms eggj to fg ablmgvgd fasgd oj succgstmojs irok tlg rgadgrs ior wlmbl tlg

autlor slahh fg ofhmcgd.

M abejowhgdcg spgbmah tlajes to Kr. Va`ggv Fmyajm, Blamrkaj & Dr. Raj`ay Fmyajm,

Dmrgbtor (Abad.) Fmyajm Croup oi Bohhgcgs, wlo arg tlg fabefojgs ajd kamj bojbgpt

provmdgr ajd ahso lavg fggj bojstajt sourbg oi kotmvatmoj tlrouclout tlms Gjdgavour. Tlgy

phaygd aj abtmvg rohg mj boordmjatmjc tlg varmous stacgs oi tlms Gjdgavour ajd spgarlgadgd

tlg pufhmslmjc wore.

M hooe iorward to rgbgmvmjc vahuafhg succgstmojs irok proigssors oi varmous gdubatmojah

mjstmtutmojs, otlgr iabuhty kgkfgrs ajd studgjts ior mkprovgkgjt oi tlg quahmty oi tlg fooe.

Tlg rgadgr kay iggh irgg to sgjd mj tlgmr bokkgjts ajd succgstmojs to tlg ujdgr kgjtmojgd

addrgss.

Apoorva Cupta


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R]HHAFWR

7G\1 OSGV GHGBTVOJMBRWjmt-1 ôwgr Rgkmbojdubtor Dgvmbgs0 Blarabtgrmstmbs oi ôwgr Trajsmstor,Tlyrmstor,CTO, ôwgr KORIGT ajd MCFT. Two-Trajsmstor Kodgh oi Tlyrmstor.Wjmt-6 RBV0 Bojstrubtmoj ajd blarabtgrmstmbs, spgbmimbatmoj ajd ratmjcs, puhsgtrajsiorkgr, optmbah msohators, kgtlods oi turj oj0 V, VB, W@T rghaxatmoj osbmhhator,Vatmjc gxtgjsmoj fy sgrmgs ajd parahhgh bojjgbtmojs, strmjc giimbmgjby. ^rotgbtmoj oiRBV^rotgbtmoj acamjst ovgr vohtacg, ovgr burrgjt, dv/dt, dm/dt, Catg protgbtmoj.Wjmt-2 Bojvgrtgrs-M0 Rmjchg ^lasg lahi & iuhh wavg bojvgrtgrs wmtl VH hoad, Rmjchg

plasg duah bojvgrtgrs, Tlrgg plasg lahi wavg bojvgrtgrs, Tlrgg plasg iuhh bojvgrtgrswmtlVH hoad, Tlrgg plasg duah bojvgrtgrs.Wjmt-4 Bojvgrtgrs-MM0 Rmjchg ajd tlrgg-plasg sgkm bojvgrtgrs wmtl VH hoad. ôwgrIabtorMkprovgkgjt-Gxtmjbtmoj ajchg bojtroh, sykkgtrmbah ajchg bojtroh, puhsg wmdtlkoduhatmojbojtroh ajd smjusomdah puhsg wmdtl koduhatmoj bojtroh. Mjvgrsmoj opgratmoj. Giigbt oihoadajd sourbg mkpgdajbgs.

Wjmt-7 DB-DB Bojvgrtgrs0 Bloppgrs0 Rtgp Wp/Dowj Boppgr, BloppgrBojimcuratmojs, ajahysms oi typg A Bloppgr Bokkutatmoj oi Bloppgrs. RwmtblgdKodgVgcuhators-fube, foost, fubefoost ajd bue rgcuhator.


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9 ôwgr Ghgbtrojmbs

ôwgr Rgkmbojdubtor Dgvmbgs

Q.1 Gxphamj tlg opgratmjc prmjbmphg oi CTO

Ajs. Catg turj oii tlyrmstor ms turjgd oj apphymjc a posmtmvg puhsg mt bojsmsts oi iour

haygrs, pjpj, as hmeg bojvgjtmojah tlyrmstors. Iujbtmojs gxbgpt ior turj-oii arg

tlg sakg as tlosg oi bojvgjtmojah tlyrmstors, tlgrgiorg, wg kamjhy dgsbrmfg tlg

turj-oii opgratmoj lgrg.

Mj tlg oj-statg oi a CTO tlyrmstor , tlg bgjtrah fasg rgcmojs arg imhhgd wmtllohgs supphmgd irok tlg ajodg ajd ghgbtrojs supphmgd irok tlg batlodg. Mi

rgvgrsg fmas ms apphmgd to kaeg tlg catg jgcatmvg mj rgspgbt to tlg batlodg,

part oi lohgs mj tlg p-fasg haygr arg gxtrabtgd tlroucl tlg catg, supprgssmjc

tlg mj`gbtmoj oi ghgbtrojs irok tlg batlodg. Korg lohg burrgjt ms gxtrabtgd

tlroucl tlg catg mj rgspojsg to tlms supprgssmoj, iurtlgr supprgssmjc tlg

ghgbtroj mj`gbtmoj. Mj tlg boursg oi tlms probgss, tlg batlodg gkmttgr ùjbtmoj

(@2) ms put mjto a rgvgrsg-fmas statg gjtmrghy, CTO tlyrmstor ms turjgd oii. Imc. 1

mhhustratgs tlg turj-oii opgratmoj, usmjc a two-trajsmstor kodgh


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Q.6 Gxphamj Ajodg slort CTO tlyrmstor.Ajs. Tlg strubturg ior Ajodg slort CTO tlyrmstor ms slowj mj Imc. 2 fghow0

At tlg @1 `ujbtmoj, tlg ajodg ms partmahhy slortgd dug to tlg j+ haygrs, so tlat

tlg rgvgrsg vohtacg oi tlg CTO tlyrmstor ms as skahh as tlat oi tlg @2 `ujbtmoj

(aroujd 17Y jorkahhy). Lowgvgr, gxbgss barrmgrs arg gxtrabtgd irok tlg catg

ajd irok tlg j+ haygr durmjc tlg turj-oii, gjafhmjc lmcl-spggd swmtblmjc.

Tlms typg oi tlyrmstor ms sumtafhg ior apphmbatmojs tlat rgqumrg lmcl-spggd

swmtblmjc fut do jot jggd lmcl rgvgrsg vohtacg, subl as vohtacg sourbg

mjvgrtgrs.

Q.2 Gxphamj rgvgrsg bojdubtmjc CTO tlyrmstor.

Ajs Tlg strubturg oi rgvgrsg bojdubtmjc CTO tlyrmstor ms slowj mj Imc. 4 fghow.


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< ^owgr Ghgbtrojmbs

Tlg rgvgrsg bojdubtmjc CTO tlyrmstor bojsmsts oi a iast rgbovgry dmodg part

ajd tlg ajodg slort CTO tlyrmstor part, tlg iorkgr oi wlmbl ms bojjgbtgd mj

parahhgh to tlg hattgr. Tlg tlyrmstor ms tlg sakg typg as tlg ojg dgsbrmfgd afovg.Tlms ms sumtafhg ior apphmbatmoj to vohtacg sourbg mjvgrtgrs ior gxakphg, wlgrg

a CTO tlyrmstor rgqumrgs Ihywlggh dmodg. Jo addmtmojah dmodg ms jgbgssary mi

tlms CTO tlyrmstor ms usgd, rgdubmjc tlg systgk smzg ajd wgmclt.

Q.4 Gxphamj wlat do you kgaj fy KORIGT?

Ajs Kosigt Kgtah (or pohy-smhmboj dopgd lgavmhy to abt hmeg a kgtah). Oxmdg (RmO6,

Abts as aj mjsuhator.). Rgkmbojdubtor (Ojg baj sghgbtmvghy blajcg tlg barrmgr

typg to j-typg or p-typg.) Imghd Giigbt (Dgvmbg ms bojtrohhgd fy aj ghgbtrmb imghd

as opposgd to burrgjt.) Trajsmstor (Tlrgg tgrkmjah dgvmbgs)


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=Fmyajms Tlmje Tlaje

(a) Slgj YCR (Catg-sourbg vohtacg) ms jot supphmgd

(f) Slgj YCR (Catg-sourbg vohtacg) ms supphmgd

Imcurg 20Tlg Rtrubturg oi aj Gjlajbgkgjt Typg KORIGT ajd mts Opgratmoj

(a) Slgj YCR (Catg-sourbg vohtacg) ms jot supphmgd

(f) Slgj YCR (Catg-sourbg vohtacg) ms supphmgd

Tlg advajtacgs oi tlg hatgrah KORIGT arg0


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1> ^owgr Ghgbtrojmbs

1. How catg smcjah powgr rgqumrgkgjt. Jo catg burrgjt baj ihow mjto tlg catg

aitgr tlg skahh catg oxmdg bapabmtajbg las fggj blarcgd.

6. Iast swmtblmjc spggds fgbausg ghgbtrojs baj start to ihow irok dramj to

sourbg as sooj as tlg blajjgh opgjs. Tlg blajjgh dgptl ms proportmojah to tlg

catg vohacg ajd pmjblgs bhosgd as sooj as tlg catg vohtacg ms rgkovgd, so

tlgrg ms jo storacg tmkg giigbt as obburs mj fmpohar trajsmstors.

Tlg ka`or dmsadvajtacgs arg

1. Lmcl rgsmstajbg blajjghs. Mj jorkah opgratmoj, tlg sourbg ms ghgbtrmbahhy

bojjgbtgd to tlg sufstratg. Smtl jo catg fmas, tlg dgphgtmoj rgcmoj gxtgjds outirok tlg Jadramj mj a psgudo-lgkmsplgrmbah slapg. Tlg blajjgh hgjctl H

bajjot fg kadg slortgr tlaj tlg kmjmkuk dgphgtmoj wmdtl rgqumrgd to

support tlg ratgd vohtacg oi tlg dgvmbg.

6. Blajjgh rgsmstajbg kay fg dgbrgasgd fy brgatmjc wmdgr blajjghs fut tlms ms

bosthy smjbg mt usgs up vahuafhg smhmboj rgah gstatg. Mt ahso shows dowj tlg

swmtblmjc spggd oi tlg dgvmbg fy mjbrgasmjc mts catg bapabmtajbg.


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RBV

Q.1 DMRBWRR MJ RLOVT TLG ^AVAHHGH O^GVATMOJ OI TL]VMRTOVR

Ajs. SSllggjjttllyyrrmmssttoorrssaarrggbboojjjjggbbttggddmmjjppaarraahhhhgghh,,ttllgghhooaaddbbuurrrrggjjttmmssjjoottssllaarrggdd

ggqquuaahhhhyy,,ttlg burrgjt ujfahajbg mjbrgasgs tlg `ujbtmoj tgkpgraturg oi tlg RBV

barrymjc tlg lmclgr burrgjt ajd dgbrgasgs mts mjtgrjah rgsmstajbg tlms mjbrgasgs

mts burrgjt slarmjc ajd kay dakacg tlg tlyrmstor.AAsskkaahhhhrrggssmmssttaajjbbgg

bboojjjjggbbttggddmmjjssggrrmmggsswwmmhhhhiioorrbbggggqquuaahhbbuurrrrggjjttssllaarrmmjjcc..

KKaaccjjggttmmbbaahhhhyybboouupphhggddmmjjdduubbttoorrssbbaajjaassssuurrggggqquuaahhbbuurrrrggjjttssllaarrmmjjccdduurrmmjjccttllgg

ttrraajjssmmggjjttppggrrmmoodd..


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16 ^owgr Ghgbtrojmbs

Q.6 G\^HAMJ dm/dt TL]VMRTOV VOTGBTMOJ.

Ajs. A tlyrmstor rgqumrgs a kmjmkuk tmkg to sprgad tlg burrgjt bojdubtmoj

ujmiorkhy tlrouclout tlg `ujbtmoj.Mi tlg ratg-oi-rmsg oi ajodg burrgjt ms vgry

iast bokpargd to tlg sprgadmjc vghobmty oi a turj-oj probgss, a lot spot wmhh

obbur.As a rgsuht oi tlg gxbgssmvg tgkpgraturg, tlg dgvmbg kay iamh.Tlgrgiorg,

mj prabtmbah bmrbumts tlg dgvmbg kust fg protgbtgd acamjst lmcl dm/dt.

Hgt us bojsmdgr tlg iohhowmjc bmrbumt.

Dkwmhh bojdubt wlgj tlyrmstor T1ms oii.Mi T1ms imrgd wlgj Dkms stmhh

bojdubtmjc, dm/dt baj fg vgry lmcl.Mj prabtmbg, tlg dm/dt ms hmkmtgd fy addmjc

a sgrmgs mjdubtor Hs.Tlgj

s

s

ssH

Y

dt

dm

dt

dm

HY


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Q.2 G\^HAMJ dv/dt TL]VMRTOV VOTGBTMOJ.

AAjjss

MMiittllggsswwmmttbbllRR11mmssbbhhoossggddaatttt;;>>,,aassttggppvvoohhttaaccggwwmmhhhhffggaapppphhmmggddaabbrroossssttllgg

ttllyyrrmmssttoorrTT11

..TTllggddvv//ddttkkaayyffggllmmccllggjjoouuccllttoottuurrjjoojjttllggddggvvmmbbgg..TTllggddvv//ddtt

bbaajjffgghhmmkkmmttggddffyybboojjjjggbbttmmjjccaabbaappaabbmmttoorrBBssaabbrroossssTT

11..SSllggjjttllggttllyyrrmmssttoorrTT

11mmss

ttuurrjjggddoojj,,ttllggddmmssbbllaarrccggbbuurrrrggjjttooiibbaappaabbmmttoorrmmsshhmmkkmmttggddffyyrrggssmmssttoorrVVss..TTllggVVBB

bbmmrrbbuummttmmsseejjoowwjjaassaassjjuuffffggrrbbmmrrbbuummtt,,aajjddttllggvvoohhttaaccggaabbrroossssttllggttllyyrrmmssttoorrwwmmhhhhrrmmssggggxxppoojjggjjttmmaahhhhyy..TTllggbbmmrrbbuummttddvv//ddttbbaajjffggiioouujjddaapppprrooxxmmkkaattgghhyyiirrookk00

TTllggssjjuuffffggrrbbmmrrbbuummttbbaajjffggddggssmmccjjggddffaassggddoojjttllggeejjoowwjjvvaahhuuggooiittllggddvv//ddtt

iioorraaddggvvmmbbgg..

TTllggvvaahhuuggooiiVVssmmssiioouujjddiirrookkttllggddmmssbbllaarrccggbbuurrrrggjjttMM

TTDD..

ss

ss

BV

YY

dt

dv 926.>926.>

TD

s

s

M

Y

V


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TTllgghhooaaddbbaajjiioorrkkaassggrrmmggssbbmmrrbbuummttwwmmttllttllggsjuffgr jgtwore as slowj fghow.

SSggbbaajjsslloowwttllaattttllggddaakkppmmjjccrraattmmooooiittllggssggbboojjddoorrddggrrbbmmrrbbuummttwwmmhhhhffgg00

wwllggrrggHHssmmssttllggssttrraayymmjjdduubbttaajjbbgg..

TToohhmmkkmmttttllggppggaaeevvoohhttaaccggoovvggrrsslloooottaabbrroossssttllggTT11,,aaddaakkppmmjjccrraattmmoommjjttllgg

rraajjccggooii>>..77ttoo11mmssuussggdd..TTllggHHmmssttyyppmmbbaahhhhyyllmmccll,,aajjddVVsssslloouuhhddffggllmmccllaajjdd BB

ss

sslloouuhhddffggsskkaahhhhttoorrggttaammjjttllggddggssmmrrggddvvaahhuuggooiiddaakkppmmjjccrraattmmoo..A harcg vahug oi

Vswmhh rgdubg tlg dmsblarcg burrgjt, ajd a how vahug oi Bs wmhh rgdubg tlg

sjuffgr hossgs.

HH

BVV

s

ss

o 6


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Bojvgrtgrs-M

Q.1 Slat do you kgaj fy tlrgg plasg duah bojvgrtgr?

Ajs Tlg iour quadrajt opgratmoj ms cgjgrahhy rgqumrgd mj varmafhg-spggd drmvgs

apphmbatmoj ior tlms wg lavg to mkphy a bojvgrtgr wlmbl baj wore mj ahh iour

quadrajts tlg tlrgg-plasg duah bojvgrtgrs arg gxtgjsmvghy usgd ior tlgrg

purposgs. Mj tlms wlgj imrst croup ms woremjc as mjvgrtgr tlaj tlg sgbojd

croup ms woremjc as rgbtmimgr ajd wlgj imrst croup ms woremjc as rgbtmimgr tlgj

sgbojd croup ms woremjc as mjvgrtgr

Tlg iohhowmjc imcurg1 slows tlrgg-plasg duah bojvgrtgrs wlgrg two tlrgg-

plasg bojvgrtgrs arg bojjgbtgd fabe-to-fabe ajd tlg wavgiorks ior mjput

vohtacgs, output vohtacgs, ajd tlg vohtacg abross tlg mjdubtor.


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imc1

Tlrgg plasg duah bojvgrtgr bmrbumt ajd wavgiork

Dug to mjstajtajgous vohtacg dmiigrgjbgs fgtwggj tlg output vohtacgs oi

bojvgrtgrs, a bmrbuhatmjc burrgjt ihows tlroucl tlg bojvgrtgrs. Tlms bmrbuhatmjc

burrgjt ms hmkmtgd fy a rgabtor. Tlg two bojvgrtgrs arg bojtrohhgd mj subl a

way tlat mi 1ms tlg dghay ajchg oi bojvgrtgr 1, tlg dghay ajchg oi bojvgrtgr 6

ms 6; - 1.


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Y

m>

v>

Bloppgr

ISD

+

HOAD

Bojvgrtgrs-MM

Q.1 Dmsbuss tlg giigbts oi sourbg ajd hoad mkpgdajbg.

Ajs Tlg sourbg mjdubtajbg slouhd fg as skahh as possmfhg to hmkmt tlg trajsmgjt

vohtacg. Ahso sourbg mjdubtajbg kay bausg bokkutatmoj profhgk ior tlgbloppgr. Wsuahhy aj mjput imhtgr ms usgd to ovgrbokg tlg profhgk oi sourbg

mjdubtajbg. Tlg hoad rmpphg burrgjt ms mjvgrsghy proportmojah to hoad

mjdubtajbg ajd bloppmjc irgqugjby. ^gae hoad burrgjt dgpgjds oj hoad

mjdubtajbg. To hmkmt tlg hoad rmpphg burrgjt, a skootlmjc mjdubtor ms

bojjgbtgd mj sgrmgs wmtl tlg hoad as slowj mj imcurg1

Imcurg1

Tlg dmiigrgjt kodgs oi tlg opgratmoj arg dmsbussgd fghow


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1< ^owgr Ghgbtrojmbs

HOAD

H

B

MH

HR

YR

+

_

+

_

T1

D1

YB mB

KODG 1 O^GVATMOJ

Tlyrmstor T1ms imrgd at t ; >. Tlg supphy vohtacg bokgs abross tlg hoad. Hoad

burrgjt MH ihows tlroucl T1 ajd hoad.At tlg sakg tmkg bapabmtor dmsblarcgs

tlroucl T1, D1, H1, & B ajd tlg bapabmtor rgvgrsgs mts vohtacg.Tlms rgvgrsg

vohtacg oj bapabmtor ms lghd bojstajt fy dmodg D1.


19/37


1=Fmyajms Tlmje Tlaje

HOAD

B

HR

YR+

_+

_

T6

YB

MH

MH

KODG 6 O^GVATMOJ

Tlyrmstor T6ms jow imrgd to bokkutatg tlyrmstor T1.Slgj T6 ms OJ bapabmtorvohtacg rgvgrsg fmasgs T1ajd turjs mi oii. Tlg bapabmtor dmsblarcgs tlroucl tlg

hoad irok Y to >.Dmsblarcg tmkg ms ejowj as bmrbumt turj-oii tmkg.

Q.6 Gxphamj ^owgr iabtor mkprovgkgjt tgbljmqugs.

Bapabmtor Dmsblarcg Burrgjt

smj

1Slgrg

& Bapabmtor Yohtacg

bos

B

B

Bm t Y t

H

HB

Y t Y t


20/37



Ajs. Tlg powgr iabtor oi plasg-bojtrohhgd bojvgrtgrs dgpgjds oj dghay ajchg, ajd

mt ms cgjgrahhy how. Tlgsg bojvgrtgrs mj`gbt larkojmbs mjto tlg supphy. Iorbgdbokkutatmoj baj mkprovg tlg mjput powgr iabtor ajd rgdubg tlg larkojmbs

hgvghswmtl advajbgkgjt oi dgvmbgs (CTO or MCFT), tlg iorbgd bokkutatmoj

baj fg mkphgkgjtgd mj prabtmbah systgks.

Tlg fasmb tgbljmqugs oi iorbgd bokkutatmoj wlmbl arg0

Gxtmjbtmoj Ajchg Bojtroh Rykkgtrmbah Ajchg Bojtroh ^uhsg-Smdtl Koduhatmoj Rmjchg-^lasg Rmjusomdah ^uhsg-Smdtl Koduhatmoj Tlrgg-^lasg ^SK Bojtroh

Gxtmjbtmoj Ajchg Bojtroh0-

Mj tlms swmtbl s1 ms turjgd oj at t ;> ajd ms turjgd oii fy iorbgd bokkutatmojat t ; . swmtbl s6 ms turjgd oj at t ; ajd ms turjgd oii fy iorbgd

bokkutatmoj at t ;6 .

Tlg iohhowmjc imcurg1 slows bmrbumt dmacrak ajd wavgiork ior Gxtmjbtmoj

Ajchg Bojtroh ior smjchg plasg iorbgd bokkutatgd sgkmbojvgrtgr


21/37



imc1

Tlg iohhowmjc imcurg6 slows bmrbumt dmacrak ajd wavgiork ior Gxtmjbtmoj

Ajchg Bojtroh ior smjchg plasg iorbgd bokkutatg iuhh bojvgrtgr


22/37



Imc6


23/37



Rykkgtrmbah Ajchg Bojtroh0-

Mj tlms swmtbl s1 ms turjgd oj at t ;( )/6 ajd ms turjgd oii at t ;(

+)/6 fy iorbgd bokkutatmoj .Rwmtbl s6 ms turjgd oj at t ; ( 2 )/6 ajd

ms turjgd oii fy iorbgd bokkutatmoj at t ;( 2 +)/6 .Tlg output vohtacg ms

bojtrohhgd fy varymjc bojdubtmoj ajchg .

Tlg iohhowmjc imcurg2 slows wavgiork ior Rykkgtrmbah Ajchg Bojtroh

Imc2

^uhsg-Smdtl Koduhatmoj Bojtroh

Mj tlg ^SK tlg bojvgrtgr swmtblgs arg turjgd oj ajd oii sgvgrah tmkgs durmjc

a lahi bybhg ajd tlg output vohtacg ms bojtrohhgd fy varymjc tlg wmdtl oi tlg

puhsgs.

Tlg iohhowmjc imcurg4 slows wavgiork ior ^uhsg-Smdtl Koduhatmoj Bojtroh


24/37



Imc4

Rmjchg-^lasg Rmjusomdah uhsg-Smdtl Koduhatmoj

Mj tlms tlg puhsg wmdtl arg cgjgratgd fy bokparmjc a trmajcuhar rgigrgjbg

vohtacg Yr oi akphmtudg Ar ajd irgqugjby Ir wmtl a barrmgr lahi smjusomdah

vohtacg Yb oi varmafhg akphmtudg Ab ajd irgqugjby 6Is.Tlg iohhowmjc imcurg7

slows wavgiork ior Rmjchg-^lasg Rmjusomdah ^uhsg-Smdtl Koduhatmoj


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Imc7


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DB-DB Bojvgrtgrs0 Bloppgrs

Q.1 wlat do you kgaj fy bloppgr ? Jakg mts dmiigrgjt bhassmimbatmojs.

Ajs. A Bloppgr ms a statmb dgvmbg usmjc mt a varmafhg db vohtacg ms oftamjgd irok a

bojstajt db vohtacg sourbg. Mt ms ahso ejowj as db-to-db bojvgrtgr ajd ms

wmdghy usgd ior kotor bojtroh ajd mj rgcgjgratmvg fraemjc.

Bloppgrs arg oi Two Typgs0-

1) Rtgp-dowj bloppgrs. Mj tlms output vohtacg ms hgss tlaj mjput vohtacg6) Rtgp-up bloppgrs. Mj stgp up bloppgr output vohtacg ms korg tlaj mjput

vohtacg.

Sg baj bhassmiy bloppgrs as

Bhass A Bloppgr

Bhass F Bloppgr

Bhass B Bloppgr

Bhass D Bloppgr

Bhass G Bloppgr

Q.6 Gxphamj dmiigrgjt bhassgs oi bloppgrs mj dgtamh.

Ajs. Tlg dmiigrgjt bhassgs oi bloppgrs arg as iohhows

1.Bhass A bloppgr

Bhass A Bloppgr ms a imrst quadrajt bloppgr .Mj tlgsg wlgj tlg bloppgr ms OJ,

supphy vohtacg Yms bojjgbtgd abross tlg hoad ajd wlgj tlg bloppgr ms OII,

vO; > ajd tlg hoad burrgjt bojtmjugs to ihow mj tlg sakg dmrgbtmoj tlroucl

tlg irggwlgghmjc dmodg ,tlg avgracg vahugs oi output vohtacg ajd burrgjt arg


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Y

Bloppgr

ISD

+

v>

v>

m>

m>

HOAD

Y

ahways posmtmvg. Bhass A Bloppgr ms a stgp-dowj bloppgr mj wlmbl powgr

ahways ihows iork sourbg to hoad.

Tlg gqumvahgjt bmrbumt dmacrak ior tlg Bhass A or imrst quadrajt bloppgr ms

slowj mj imc(1.a)ajd imc(1.f)rgspgbtmvghy,

Imc 1.a Imc 1.f Bmrbumt

dmacrak oi Bhass A bloppgr Imrst quadrajt opgratmoj

To study tlg pgriorkajbg oi Bhass A Bloppgr tlg output burrgjt wavgiork

oftamjgd mj stgp dowj bloppgr wmtl V-Hhoad baj fg usgd


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6< ^owgr Ghgbtrojmbs

Output burrgjt

Tlyrmstorcatg puhsg

Output vohtacg

mc

m>

v>

t

t

ttOJ

T

BL OJ

ISD Bojdubts

Imc(1.b)wavgiork ior Bhass A bloppgr


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6=Fmyajms Tlmje Tlaje

Y

Bloppgr

+

v>

v>

m>

m>

H

G

V

D

Bhass F Bloppgr0

Mj tlms avgracg output vohtacg ms posmtmvg ajd avgracg output burrgjt ms

jgcatmvg, tlgrgiorg Bhass F Bloppgr opgratgs mj sgbojd quadrajt. Bhass F

Bloppgrms a stgp-up bloppgr mj tlms bloppgr, powgr ihows irok hoad to sourbg.

Slgj bloppgr ms OJ, G drmvgs a burrgjt tlroucl H ajd V mj a dmrgbtmoj

opposmtg to tlat slowj mj imcurg. Durmjc tlg OJ pgrmod oi tlg bloppgr, tlg

mjdubtajbg H storgs gjgrcy. Slgj Bloppgr ms OII, dmodg D bojdubts, ajd

part oi tlg gjgrcy storgd mj mjdubtor H ms rgturjgd to tlg supphy. Bhass F

Bloppgrms usgd ior rgcgjgratmvg fraemjc oi db kotor.

Tlg gqumvahgjt bmrbumt dmacrak ior tlg Bhass F or sgbojd quadrajt bloppgr ms

slowj mj imc (6.a) ajd imc (6.f) rgspgbtmvghy,

Imc 6.a imc6.f

Bmrbumt dmacrak oi Bhass F bloppgr Rgbojd quadrajt opgratmoj

Tlg wavgiork ior Bhass F bloppgr ms slowj mj imcurg 6.b


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Output burrgjt

Dbojdubts Bloppgr

bojdubts

Tlyrmstorcatg puhsg

Output vohtacg

mc

m>

v>

t

t

t

Mkmj

Mkax

T

tOJtOII

Imc6.b wavgiork ior Bhass F bloppgr

Bhass B bloppgr0

Tlg Bhass B Bloppgrms a bokfmjatmoj oi Bhass Aajd Bhass F Bloppgrs, ior imrstquadrajt opgratmoj, BL1 ms OJ or D6 bojdubts ajd ior sgbojd quadrajt

opgratmoj, BL6ms OJ or D1bojdubts.

Slgj BL1ms OJ, tlg hoad burrgjt ms posmtmvg ajd tlg output vohtacg ms gquah

to Y & tlg hoad rgbgmvgs powgr irok tlg sourbg ajd wlgj BL1ms turjgd

OII, gjgrcy storgd mj mjdubtajbg Hiorbgs burrgjt to ihow tlroucl tlg dmodg

D6 ajd tlg output vohtacg ms zgro ajd tlg Burrgjt bojtmjugs to ihow mj

posmtmvg dmrgbtmoj.


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Y

Bloppgr

+

v>

D1

D6BL6

BL1

v>m>

m>

H

G

V

Slgj BL6 ms trmccgrgd, tlg vohtacg G iorbgs burrgjt to ihow mj opposmtg

dmrgbtmoj tlroucl H ajd BL6, tlg output vohtacg ms zgro jow oj turjmjc OIIBL6, tlg gjgrcy storgd mj tlg mjdubtajbg drmvgs burrgjt tlroucl dmodg D1ajd

tlg supphy output vohtacg ms Y, tlg mjput burrgjt fgbokgs jgcatmvg ajd powgr

ihows irok hoad to sourbg. Avgracg output vohtacg ms posmtmvg wlmhg avgracg

output burrgjt baj taeg fotl posmtmvg ajd jgcatmvg vahugs.

Rokg pomjt to eggp mj kmjd rgcardmjc Bhass B bloppgr arg 0-

Bloppgrs BL1 & BL6 slouhd jot fg turjgd OJ smkuhtajgoushy as mtwouhd rgsuht mj slort bmrbumtmjc tlg supphy.

Bhass B Bloppgr baj fg usgd fotl ior db kotor bojtroh ajd rgcgjgratmvgfraemjc oi db kotor.

Bhass B Bloppgrbaj fg usgd as a stgp-up or stgp-dowj bloppgr.Tlg gqumvahgjt bmrbumt dmacrak ior tlg Bhass B or quadrajt imcurg oi bloppgr

ms slowj mj imc (2.a) ajd imc (2.f) rgspgbtmvghy,

Imc (2.a) Imc (2.f)

Bmrbumt dmacrak oi Bhass B bloppgr Imrst ajd Rgbojd quadrajt opgratmoj


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Catg puhsg

oi BL6

Catg puhsgoi BL1

Output burrgjt

Output vohtacg

mc1

mc6

m>

Y>

t

t

t

t

D1 D1D6 D6BL1 BL6 BL1 BL6OJ OJ OJ OJ

Tlg wavgiork ior Bhass B bloppgr ms slowj mj imcurg 2.b

Imc(2.b) Savgiork ior Bhass B bloppgr


33/37



Y

+ v>

D6

D1

BL6

BL1

v>

m>

H GV m>

Bhass D Bloppgr

Bhass D ms ahso a two quadrajt bloppgr. Slgj fotl BL1ajd BL6arg trmccgrgd

smkuhtajgoushy, tlg output vohtacg vO; Yajd output burrgjt ihows tlroucl

tlg hoad.

Slgj BL1ajd BL6arg turjgd OII, tlg hoad burrgjt bojtmjugs to ihow mj tlg

sakg dmrgbtmoj tlroucl hoad, D1 ajd D6, dug to tlg gjgrcy storgd mj tlg

mjdubtor H. Tlg Output vohtacg vO; - Y

Tlg avgracg hoad vohtacg ms posmtmvg mi bloppgr OJ tmkg ms korg tlaj tlg OII

tmkg m.g. tOJ : tOII ajd avgracg output vohtacg fgbokgs jgcatmvg mi tOJ 8tOII.

Lgjbg tlg dmrgbtmoj oi hoad burrgjt ms ahways posmtmvg fut hoad vohtacg baj fg

posmtmvg or jgcatmvg.

Tlg gqumvahgjt bmrbumt dmacrak ior tlg Bhass D or quadrajt opgratmoj ms slowj

mj imc (4.a) ajd imc (4.f) rgspgbtmvghy,

Imc (4.a) Imc (4.f)

Bmrbumt dmacrak oi Bhass D bloppgr Imrst ajd Iourtl quadrajt opgratmoj


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Catg puhsgoi BL6

Catg puhsgoi BL1

Output burrgjt

Output vohtacg

Avgracg v>

mc1

mc6

m>

v>

Y

t

t

t

t

BL ,BLOJ1 6 D1,D6 Bojdubtmjc

Tlg wavgiork ior Bhass D bloppgr ms slowj mj imcurg 4.b ajd 4.d

Imc(4.b) Savgiork ior Bhass D bloppgr


35/37



Catg puhsgoi BL6

Catg puhsgoi BL1

Output burrgjt

Output vohtacg

Avgracg v>

mc1

mc6

m>

v>

Y

t

t

t

t

BL ,BL

OJ1 6 D1,D6 Bojdubtmjc

Imc(4.d) Savgiork ior Bhass D bloppgr


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Y

v>

m>H GV

BL6 BL4D6 D4

D1 D2BL1 BL2

+

Bhass G Bloppgr

Bhass G ms a iour quadrajt bloppgr. Slgj BL1ajd BL4arg trmccgrgd, output

burrgjt mo ihows mj posmtmvg dmrgbtmoj tlroucl BL1 ajd BL4, ajd wmtl output

vohtacg vO ; Y, tlms cmvgs tlg imrst quadrajt opgratmoj. Slgj fotl BL1 ajd

BL4arg OII, tlg gjgrcy storgd mj tlg mjdubtor H drmvgs mOtlroucl D6ajd D2

mj tlg sakg dmrgbtmoj, fut output vohtacg vO ; -Y. Tlgrgiorg tlg bloppgr

opgratgs mj tlg iourtl quadrajt. Slgj BL6 ajd BL2 arg trmccgrgd, tlg hoad

burrgjt moihowsmj opposmtg dmrgbtmoj & output vohtacg vO; -Y. Rmjbg fotl mO ajd

vOarg jgcatmvg, tlg bloppgr opgratgs mj tlmrd quadrajt. Slgj fotl BL6 ajd

BL2arg OII, tlg hoad burrgjt mO bojtmjugs to ihow mj tlg sakg dmrgbtmoj D1ajd D4 ajd tlg output vohtacg vO ; Y. Tlgrgiorg tlg bloppgr opgratgs mj

sgbojd quadrajt as vO ms posmtmvg fut mOms jgcatmvg.

Tlg gqumvahgjt bmrbumt dmacrak ior tlg Bhass D or quadrajt opgratmoj ms slowj

mj imc (7.a) ajd imc (7.f) rgspgbtmvghy,

Imc(7.a)Bmrbumt dmacrak oi Bhass G bloppgr


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v>

m>

BL - BL OJ

BL - D Bojdubts1 4

4 6

D D6 2

- Bojdubts

BL - D Bojdubts4 6

BL - BL OJ

BL - D Bojdubts

2 6

6 4

BL - D Bojdubts

D - D Bojdubts

6 4

1 4

Imc(7.f)Iourtl quadrajt opgratmoj

power electronics iii

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