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EXPERIMENT NO. 2
AIM :- To Design Armature-Winding and core of 500kW,600V, Lap wound DC Macine !"art##$% APPARATUS REQUIRED:-
S.No
Apparatus
Specification
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T!EOR":-Te armatur armaturee winding winding and core of *ap wound wound DC macine macine eating eating is te main criterion for design% *ectrica* macines are designed and manufactured wit a se*ected c*ass of insu*ation wic can witstand a certain temperature% #f o.ereating occurs, insu*ation wi** get weakened and resu*ts in sort circuits *eading to te damage of te macine% PRO#R PRO#RAM AM::-
/ Design of 500W, 50 0W, 600V, 600V, Lap wound DC Macine !"art-##$-Armature-Winding !"art-##$-Armature-Winding and core // input data D 1 2003 4 1 65003 " 1 63 ATa"ma 1 25003 dVp 1 3 V 1 6003 7#&10%02)83 91:003 ;p"1&<3 #7L 1 2%3 cda&153 wca1&%83 = 1 )3 #nsWs 1 &%23 #ns>s 1 %)3 >w 13 >L 1&3 Li 1 )<3 L 1 003 "A+"" 1 0%:3 "" 1<&2%22 3
?c 1 &%3 @ 153 W 1 5003 .A 1 )8%)3 // Assumptions #s* 13 // Armature-Winding and core ATa" 1piDB&0004B!)"$3/Arme AT per "o*e if ATa" 1 ATa"ma continue3 end3 1!&EdVpB&00$V3/#nduced mfon 9' *oad A 1 "3 /7or Lap wound Macine, 9o% of para**e* pats =&160AB!"7#&9$3 /Tota* no% of Conductors ; 1;p""3 sp 1 piDB;3 /;*ot pitc if sp F )5 GG sp 5 continue3 end3 =s& 1 =&B;3 =sf1 f*oor!=s&B)$)3 =sc 1 cei*!=s&B)$)3 =s 1 =sf3 if =s& - =sf & =s 1 =sc3 end3 /ConductorsB;*ot =1;=s3 /Corrected no of conductors 7# 160AB!"=9$3 /Corrected .a*ue of 7*uB"o*e CV 1#7LBA=s3 /Current Vo*umeBs*ot if CV F &000 GG CV &500 continue3 end3 #a 1#7L E #s*3 /Annature Current Aca&1 #aBABcda&3 ca&1 Aca&Bwca3 ca1 cei*!ca&$3/Conductor t if ca 1 &6 continue3 end3 Aca1 0%82cawca3 /Assuming a factor of 0%82 for rounding at te conductor edges, e.ised Area of conductor cda 1 #aBABAca3 /Corrected current densit( if cda 1 5%0& continue3 end3 =w 1=sB=3/9o of cond widt-wise in s*ot Ws 1 =w!wcaE0%<$ E #nsWs3 /;*ot Widt >s1=!caE0%<$E#ns>s E >wE>L3 /'ia of Am*% teet at # eigt from root D&+ 1 D - )!)B>s$3/'ia of Am*% teet at # eigt from root sp&+ 1 piD&+B;3 /;*ot "#tc at a+o.e d*a Wt&+ 1 sp&+ - Ws3 /Widt of toot at a+o.e dia At&+1 Wt&+Li;B"3/Area ofC; of toot at a+o.e dia ?ta. 1 7#&e6BAt&+3 /7*u dens#t( m te toot s 1 sp&+LBWt&+BLi3/Carter Coeff
if s 1 )%) continue3 end3 ?tm1?ta.B"A+""3/Ma toot 7*u dens#t( if ?tm 1 )%& continue3 end3 Lfr1&<0 E &%&5""3 /7ree Lengt !'.erang$ of conductor Lac 1 !L E Lfr$B&e3 /Lengt of Arme-Conductor a 1 0%0)&LacBAca=BA)3/Anne Wdg es "cua1&%)#a)a3/ Assuming )0/ dd( Current Losses ,Arm Copper Loss Wcua 1 LacAca=2%8e-3 /Wt of Anne-Copper 7#c 1 7#B)3 /7*u in core Ac 1 7#c&e6B?c3 / >c& 1 AcBLi3/>eigt of Core Di& 1 D-)!>s E >c&$3 Di1 cei*!Di&B&0$&03 /#nner diameter of Core >c1!D-Di$B)- >s3/Correeted eigt of Core Dmc 1D-)>s - >c3/Mean dia ofeore Wc 1 :%2e-6piDmcAc3 /Weigt of Core >(s"kgc1!)%8B0$@3 / >(sterisis *oss in coreBkg !mperia* 7ormu*a $ "(sc 1 Wc>(s"kgc3 />(sterisis *oss in eore "edd(c 1 0%00<5!?c@0%5$)Wc3 / Hsing 0%5 mm tiek Laminations for core, dd( current Loss in core "ic 1 !"(sc E "edd(c$ &%)53 / considering )5/ more on *oaded conditiion, #ron *oss in core Wt 1 :%2e-6Wt&+Li;>s3 / weigt of teet >(s"kgt 1 !2B0$@3 / >(steresis *oss in teet Bkg "(st 1 Wt>(s"kgt3/ (sterisi *oss in teet "edd(t 1 0%00:!?tm@0%5$)Wt3 / for 0%5mm tick *aminations, edd( current *oss in teet "it 1!"(st E "edd(t$&%)53 / considering )5/ more on *oaded condition, iron *oss in teet "i 1 !"icE "it$3 / Tota* iron *oss "i+W 1"iB!W&e$&003/ #ron *oss percentage "a1"cuaE"i3/*osses in armature Larme1 LE:0E0%""3 / o.era** *engt of armature ;A 1piDLarmeB&003 / coo*ing surface of Armature "d1"aB;A3 / *oss per s4 cm of coo*ing surface Tra1):0"dB!& E 0%08!.A&%$$/ temp rise of armature
PRO$EDURE:-
&%'pen te computer% )% 'pen MATLA? software% % T(pe te entire coding of te program% <% un I ;ee weter an( error is present% 5% #f not cop( te resu*t% RESU%T:-
Te temperature rise of Armature is found out % Tra 1 <)%6)62 PRE$AUTION:-
&%T(pe te correct code% )% ;a.e te program wi*e t(ping%
$ON$%USION:- >ence te temperature rise of armature is wit in specified *imit for +etter performance of macine
