变压器空载损耗中的磁滞损耗和涡流损耗的区分

变 压 器 空 载 损 耗 中 的 磁 滞 损 耗 和 涡 流 损 耗 的 区 分 ??? 1, ??? 2 ( 1.?????????? , ?? ?? 224002; 2.???????????? , ?? ?? 224001) ??: ?????????????????????????? , ???????。 ??? : ??? ; ???? ; ???? ????? : TM406 ????? : B ???? : 1001- 8425( 2007) 09- 0026- 03 Distinction be tween Hys tere s is Loss and Eddy Current Loss in Trans forme r No- Load Loss QIN Da- wei1, FENG Chun- bo2 ( 1.Yancheng Teache rs University, Yancheng 224002, China7 2.Jiangs u Boled a Transforme r Co., Ltd., Yancheng 224001, China ) Abstra ct: The me thod to d istinguis h hys teres is loss and ed dy current loss in transformer no- load loss is introduced . The te st p rinc iple is p re sented . Key words : Transformer; Hyste re sis loss ; Ed dy current loss 1 ?? ?????????????????? , ?: ???? (PFe)=???? (Ph)+????(Pc) ?????? ????????????? (???????????????? )????? ????? PFe, ??????????????? ?????????? , ??????????? ????????????????????? ?。 ???????????????????? ???????????????????、?? ?????、???????????????? ??。 2 ???? ?????????????????。 ?????? , ?????????? : F = + =σfB V+σf B V ( ) ?? σ、σ??????????????? f???????, z B ???????????????, T V??????????, mm3 ?? ( 1)?? σhBm2V=A, σcBm2V=B, ? : PFe=Af+Bf 2 ?? , ??? Bm ???, A、B ??????? ???。?? : PFe f =A+Bf ( 2) ??? ( 2) , ?????? 50Hz ?????? ?????? , ???????? PFe ? , ???? ????????????, ?????( 2)??? ???A ? B。? Ph=Af ? Pc=Bf 2 ??????? ??? f ?? PFe ?? Ph ??? Pc ??。 3 ???? ( 1)????: TB??????。( ????? ??? 220V, ???? 36V。????? ??? 1 000 ? , ???????? 180 ? , ????? 500VA) 。 ( )???? SDF ??????????? ? KGT ??????, ??????? W。 ( 3)??? D3 z????。 ( ) ??? D3 W ?????????。?? ? 44 ? ? 9 ? 2007 ? 9 ? TRANSFORMER Vol.44 September No.9 2007 P e Ph Pc h m2 c 2 m2 1 h c H m 2 : - 1 - 1 2.2k : - H 4 : 4- ???、??? : ?????????????????????? 9 ? ??????? 300V???? 0.5A ????。 ( 5)??? :D26- V ????? MF- 10 ???。 ??????????? 300V ?? 50V ? , ?? ?????????? U1 ?? U2 ?。 (6) ??? :D26- A ???? , ??????? ?? 0.5A ?。 4 ???? ??????????? 1 ??。 ???? , ??? f ??????? Bm ?? ?。 ? ? ?? ?? , U1?E1=4.44N1fΦm=4.44N1fBmS ( ??????? N1 ?????? S ?? ) , ?? ? : Bm= U14.44f =k U1 f ?? , ????? Bm ???? ??????? f ? , ?????? U11f ???? ?????。????? f??, ???????? ??????? U1 至????, ??? f ????。 ????????? f、U1 ????????, ????????????????????。 ???????????。???????? ???? (P? ) ???????? (PFe) ????? (PCuo) , ? PFe=P? - PCuo。???????????? ????????????????? r1, ??? ??? f ? U2 ???? I0 ? , ? PCuo=I02r1 ??? ?。 5 ????????? 5.1 ???? ?????? 1 ??。 5 ???? ?? F f = +Bf ??? , ????????? ????? : A= "f i 2 ?"PFei fi -"PFei?"fi n?"f 2 - ("fi) 2 = 175 725?2.758 3- 138.05?350.00 7?175 725- (350.00) 2 =3.009?10 - 1 B= n?"PFei-"fi?"PFeifi n?"f 2 - ("fi) 2 = 7?138.05- 350.00?2.758 3 7?175 725- (350.00) 2 =1.862?10 - 3 ? Ph=Af=3.009?10 - 1f ? Pc=Bf 2=1.862?10 - 3f 2, ????????????????????? f ?? Ph ?? Pc ?。??, ? f=50Hz ?: Ph=15.05W, Pc=4.66W ????????????? , ?????? ?, ???????????????????? ??, ????????????, ??????? ????????。 ??????, ????????????? ?? ?? ?? ?? ? C++builder 6.0。 ?? C++ builder 6.0, ?????? , ???????? , ? ????????, ?????????。 ????????, ??????????? ?, ???????。????, ???????? ????。 ??????????????: ( ????? ?, ??????????)。 11------------------------------------------------??? #include #include #pragma hdrstop #include″Unitl.h″ 11------------------------------------------------ #pragma package(smart_init) #pragma resource″V.dfm″ TFormlVFormlY 11?????? = Y 11??? , ???“??”?????? ??? = Y 11??? , ???“??”?????? ??? ? 1 ???????? ? ? ? ? Hz U1 U2 W A TB Fig.1 Circuit of no- load test ? 1 ???? f1Hz 45.00 47.00 48.50 50.00 51.50 53.00 55.00 F 1W 3 8 5 8 6 3 33 Table 1 Tested data 27 .2 P e A int n 0 int m 0 P e 17. 9 1 .1 1 .99 19. 7 20.4 21. 22.19 ? 44 ? ???? 6 3 ???? ???( 58 ) , ? , ?????? , ??????????????? , ?????????????? ; ???( 6 ) , ? , ?????? , ??????????????? , ????????????????。 float a010012float b410012 55?? f ? PFe ????? float8p=&a[0]2 55?? ?????? , ???? a ???? float8q=&b[0]? 55???????? , ???? b ? ??? 55------------------------------------------------ void_fastcall TForml::Button2Click(TObject8Sender) 55“??”????? 4 8p=StrToFloat(Edit1- >Test)2 55?? ?? 1 ?? ????????????? p++2 55??????? Edit4- >Test=“????”+IntToStr (n+1)+″? f ? ?″2 55???? 4 ??????????? n++; Z 55???? 1 55------------------------------------------------ void_fastcall TForml::Buttonl Click(TObject8Sender) 55“??”????? [ if(n\=m) 55?? f ? PFe ????????? ??? , ?????? Edit3- >Test=″?????″? else 4 float suml,sum2,sum3,sum4? suml=sum2=sum3=sum4=0? for(int i=n?i>0?i--) 55????????? ?? [ sum1=sum1+(8(p- i))8(8(p- i))? sum2=sum2+(8(q- i))5(8(p- i))? sum3=sum3+(8(q- i))? sum4=sum4+(8(p- i))?Z float A,B? A=(sum18sum2- sum38sum4)5(n8sum1- sum48sum4)? B=(n8sum3- sum48sum2)5(n8sum1- sum48sum4)? Edit3- >Test=″A ???″+FloatToStr(A)+″ ″+″B ???″+FloatToStr(B)+″\n″? 1 1 55------------------------------------------------ void_fastcall TForml::Button4Click(TObject8Sender) 55“??”????? 4 delete[]a? 55???? a ????? delete[]b? 55???? b ????? Editl- >Text=″″? 55????????????? Edit2- >Text=″″?Edit3 - >Text=″″?Edit4 - >Text=″″? Edit5- >Text=″″? m=n=0? Z 55???? 0 ????????? , ??????????。 ?? .exe ?? , ??????。??? f ? PFe ?? ??????????? , ??“??”?? , ??? ????????????。?????????, ??????????????????? , ?? ??????。f ? PFe ??????????? , ???? f ?????? PFe ???????致? , ??????????“?????”。“??”?? ??????????, ??????????? ??。???????, ?“??”?, ?????? ?????A ? B??。 6 ??? ??????????????? , ???? ????????, ??????????。 ???????????????????? ??????????????????、??? ??????????? PFe ?? Ph ? Pc ??? ????????。 ???? : [1] ??.??????[M].?? : ??????? , 1997. [2] W.????? .???? .? ????? ?? : ???? [M].?? :??????? , 1984. [3] ??? .????????? ??[M].?? : ????? ?? , 1984. [4] ??? , ?? ? .? ???? ?[M].? ? : ??? ??? ? , 1984. [5] ??? .????????? ?[M].?? : ?????? ? , 1986. [6] ??? , ??? , ? ?? .C++? ??? ??????C ? C++????[M].?? :??????? , 2003. [7] ?? ? .C++builder 6.0 ? ???[M].?? : ??? ???? , 2004. 28 : 200 -0 - 22 : 19 - 19 4-