EE403.10.ppt

DEPARTMENT O TECHNICA EDUCATION, A.P.Name: Ch Jyothi Designation: Senior e!t"rer#ran!h: E$e!tri!a$ EngineeringInstit"te : %o&ernment Po$yte!hni!,Pro''at"r(ear)Semester : I* SemesterS"+,e!t: A C MACHINES - ICo'e No: EE-./0To1i! : Sing$e Phase Trans2ormersD"ration: 3/ Mins.S"+ To1i!: Ca$!"$ationo2 CORE $ossesinaSing$e1haseTrans2ormer Tea!hing Ai's: PHOTOS 4 DIA%RAMSEE ./0.5/ 5OBJECTIVES :On!om1$etion o2 this 1erio', yo" 6i$$ a+$e to:7 Un'erstan' ho6 to !a$!"$ate the!ore $osses , magneti8ing !om1onent an' 6or9ing !om1onento2 no-$oa' !"rrent o2a sing$e 1hase Trans2ormer EE ./0.5/ :Recap 7Theory o2 an i'ea$ trans2ormer 7St"'y the 1henomena 6hen the se!on'ary o2the trans2ormer is o1en !ir!"ite' 76or9ing!om1onent 4magneti8ing!om1onent o2No-$oa' !"rrentEE ./0.5/ 0EXAMPLE 17A trans2ormerta9es/.;3 A6henits 1rimary is !onne!te'to:// * ,3/ H8 s"11$y .These!on'ary is o1en !ir!"ite' .The1o6er a+sor+e' 2rom the s"11$y is in' the iron $oss !"rrent an' magneti8ing !"rrent. EE ./0.5/ .SOLUTION :7No oa' 1rimary !"rrentI/ ?/.;3 A7Primary&o$tage *5 ?:// *7 No oa'In1"t1o6er=/ ? iron $osses ? *5I/!os@/ ? in'DiE The 1o6er 2a!toronNo-$oa'DiiE A!ti&e !"rrentDiiiEMagneti8ing!"rrentDi&E !o11er$oss in the 1rimary6in'ing D.*.6in'ingE 4D&E!ore $ossEE ./0.5/ 55Given daa:7S"11$y&o$tage *5 ?:./ *7No-oa'!"rrent I/?: A7Primaryresistan!eR5?/.C K7No-oa'in1"t 1o6er=/ ? in'the magneti8ingan'iron $oss !om1onent o2No-oa' 1rimary!"rrent.NAns : /.:H. A, /./< A O :E A sing$e 1hase trans2ormer ta9es an in1"t o2 03/ *at no.$oa' an' at rate' &o$tage o2 :0/ *. The !ore $ossis 55/ = . >in' DiE the iron $oss !om1onent o2 no-$oa' !"rrent , DiiE magneti8ing !om1onent o2 no-$oa' !"rrent.N Ans :/..;C A , 5...: AO

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