high voltage DC transmission(HVDC)
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Refer point 1
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Refer point 2
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refer point 3
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MODULE 2 LECTURE 4
POINT 4
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note- q= number of !"e# in ! $ommut!tin% %roup&OR'
Mi( point re$ti)er*no of $ommut!tin% %roup#= 1 !n( q =2+
T,ree p,!#e ,!"f !e*no of $ommut!tin% %roup#= 1 !n( q =3+
T,ree p,!#e bri(%e re$ti)er *no of $ommut!tin% %roup#= 2 !n( q =3+
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Point .
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&i% b- o"t!%e !$ro## "o!(*$on#t!nt /(+ !n( #,!(e( !re! $orre#pon(#to o"t!%e (rop !$ro## in(u$tor &i% $- o"t!%e !$ro## one (io(e&i% e- tr!n#former $urrent*note t,!t it i# non #inu#oi(!"+
/o"t!%e r!tin%= PI/= 2/m
Current r!tin%= Im!0 = IDPoer r!tin% = PI/ I! = *2/M+*ID2+ *more $o#t !n( poor meruti"i!tion f!$tor+
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NOTE-
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M!0 $urrent t,rou%, !"e= Im!0=ID
POINT 5*6etter mer uti"i!tion f!$tor too+
Refer point 7
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8i%,er pu"#e number=9 Loer ,!rmoni$#=9#moot,er ($
Re!#on- 8!rmoni$# on !$ #i(e np:1*n =1'2;3< p=pu"#e number+
&or #i0 pu"#e $onerter*.'+*11'13+'<
&oe te"e pu"#e $onerter*11'13+''''
TU& ¿ secondary AC power
DC power=
V RMS I RMS
V d I d * !"!># %re!ter t,!n
unit>+
Refer point ?
Le$ture 5
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Note- p= qr#*u#e( !boe+
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T,i# #,o# e@e$t of oer"!ppin% (ue to pre#en$e of "e!A!%e
in(u$t!n$e of mer;
T,e#e !re !riou# mo(e# of oper!tion of bri(%e $onerter*Br!et$At+;8ere u i# t,e oer"!p !n%"e; It i# (e#ir!b"e to oper!te$onerter for u5FG; &or u95F're#u"t# in (e!( #,ort $At;
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Commut!tion o"t!%e for ! !"e i# t,e "ine o"t!%e ,i$, ,enbe$ome# po#itie' t,!t !"e $!n be )re(;E%- for !"e 3' $ommut!tion o"t!%e i# /b!