第4章AC-DC变换技术应用

1、第4章AC-DC变换技术应用Disu = U sintsmuoR图4-1 单相半波不控整流电路（阻性负载）mmTmUUdttUTU5 . 02sin12020.5mUIR 2000011sin0.318TTmmmUUUt dtUtdtUTT000.318mmUUUIRRR dttdiLRtitVmsin tmetLRVti)sin(sin22RLtanRLdttdiLvL）（ tmetLRVti)sin(sin22 0)sin(sin22eLRVim, 0)(21)(21020tdtitdtiIo）)(210tdtiIRMS）RIPRMSo2/sinmmtRCVtVV e二极管导通二极管截止s

2、inmVV mV2ttVtVmmcossinRCtmRCtmeVRCeV/sin1sintRCmmeVRCV/sin1cosRCtan 2tsinsin/2RCeCCmVVmax 2t2sinminmVVsin1minmaxmoVVVVRC22RCmRCmoeVeVV/2/211fRCVVmosinsin/2RCet0tRVimsin0)cos1 (2(sin210mmVttdVV）oV0mV0)22sin(12sin2122mmVttdVURUI cos1)22sin(00UUIIKftiRdtdiLtVm0)sin()sin()()()(22)(222tLReLRLVtitLRm0t0)0

3、(i)sin()(22LRLeLRt0)(i)sin()()()(022222LReLRLUiLRm)sin()sin(LWRe)(RLarctg0L00)sin(0RRLtg2)2sin()2sin()(2sin)2sin()cos(cos222)sin()sin(LWResin()sincos()cossin()sin()RLe)cos()()(cossintgetgLRcossin)(LRetg0)(tg02)cos(cos2sin210mmVttdVVRLvvv0022100diLtddtdiLVLRoVV mmmoVVtdtVV637. 02sin10负载LR tnnnVVtvmmo

4、2cos1212142)(1）moVV2121214nnVVmnRVIoo22LnRVLjnRVInnntnIItinoocos1LRL 022LnVLnRVInnnRVItnIItioonoocos12,2RMSnoRMSIIIRIPRMSo21T4T1T4T2utUumsin21T4TtUumsin2123456ABCD654321DCBAT itleN um berR evisionSizeCD ate:10-Jul-2000Sheet of File:D :liw ordlihong1.ddbD raw n B y:T 1T 2T 3T 4Ruiabuid2d2u1uiddtudid)

5、cos1 (0mUV0a0180)cos1 (RUImRL 1T2T3T4TRL di,ttVumsin22,t2222sincos2mdmUUUtd t 2sin222122mmUttdUU22)cos1 (0mUV21212222sin12sin22mmUttdUUmmmoVVtdtVV955. 03sin31323tVmsinopnnnabvvvv01t3t21tt32tt6t123456ABCD654321DCBAT it leN u m b e rR e v is io nS iz eCD a te :1 0 - J u l- 2 0 0 0S h e e t o f F ile :

6、D : liw o r d lih o n g 1 .d d bD r a w n B y :V T 1V T 2123456ABCD654321DCBAT it leN u m b e rR e v is io nS iz eCD a te :1 0 - J u l- 2 0 0 0S h e e t o f F ile :D : liw o r d lih o n g 1 .d d bD r a w n B y :V T 1V T 2V T 3RTuvwiuABCdduuuu2uduGtttu nv nw n= 0t 1t 2t 3n1t2t3t030665cos323)(sin23656

7、mmdVttdVU030)6cos(123)(sin236mmdVttdVU212165622)2cos8361(3)(sin23mmVttdVU图4-17 三相半波可控整流电路及波形（LR）61t65tvnunuu23twnvnuuo30tVumunsincos233)(sin23656mmdVttdVU2121265622cos83613)(sin23mmVttdVUV T 3uvwudnL cL cL cu v w iiiwvudIuuuuu nv nw nw n/ 6udV T 3uvwudnL cL cL cu v w iiiwvudIuuuuu nv nw nw n/ 6udiii

8、iiiwuvwuIdihttV T 2V T 1dvuIii0dtdidtdivudtdiLdtdiLuuuCvCunvnunvnvCuudtdiL2uvuu 0dtdiv0dtdiuunvnuu2vnunvCvnuCunduudtdiLudtdiLuudCIvCvCdILmdiLmtddtdiLmVd2220cL)cos()cos(mtUumtUumvnmunmtUuumunvnsin.sin2mtUdtdiLmvCsin.sin22sin()coscos()sinCdmLItdtUm 123456ABCD654321DCBATitleNumberRevisionSizeCDate:10-J

9、ul-2000Sheet of File:D:liwordlihong1.ddbDrawn By:VT1VT3VT5TuvwABCVT4VT6VT2Zidnuuv uuw uvw uvuuwu uwvuunuvnuwnu2udtt=0tttt1 3 5 16 2 4 61 13 3 5 516224466uGuGuGuG000000宽脉冲双窄脉冲uvvuuuuuwwuuuuvwwvuuuu1,61,22,3uunuvnuw nuvuuvwuw vuw uuuv /6 =30023,44,55,6uuwtu1,61,22,3uunuvnuw nuvuuvwuw vuw uuuv /6 =6002

10、3,44,55,6uuwu1,61,22,3uunuvnuw nuvuuvwuw vuw uuuv /6 =90023,44,55,6uuwauw vuw v5,6bc000000udududuuttttt00tUumunsin)32sin(tUumvn32sintUumwn6sin3tUumuv2sin3tUumvw65sin3tUumwucos33)()sin(331323mmdUtdtUU323313 36sin()1 cos()33dmmUUt d tURL 6t67t6567t123456ABCD654321DCBATitleNumberRevisionSizeCDate:10-Ju

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12、n21433mUU122RMSnRMSnIITHD123456ABCD654321DCBATitleNumberRevisionSizeCDate:10-Jul-2000Sheet of File:D:liwordlihong1.ddbDrawn By:RuabuiOiiD4D2iCD1D3CViiiViiit02040608010012345678910谐波分量cos1mdUU2122sin12mUU22/23/225/2(-)/2(+)/2u2udiT1iT3i2Idttttttu2udiT1iT3i2Idtttttt2k22t22t223t223tpmmmmmPmmdUtdtUUmmm1

13、1)cos(cos)()sin(22), 5 , 3 , 1(coscos2)()sin(1)()sin(1)()sin(111202nntnnItdtnItdtnItdtntibpmmmdpmddnmmmmmm）0nmm整流电路电压取样电流取样DC/DC变换器电压取样VO负载误差放大器-VA +给定电压VI乘法器M比较器+CA -驱动电路uut123456ABCD654321DCBATitleNumberRevisionSizeBDate:13-Jul-2000Sheet of File:D:liwordlihong1.ddbDrawn By:LVTVDCRW1LVAVCCVrefW2MXY

14、ZCAVCCLVTVDCRW1LVAVCCVrefW2MXYZCAVCCCAVCC电流取样LVTVDCRW1LVAVCCVrefW2MXYZCAVCC电流取样电流取样123456ABCD654321DCBATitleNumberRevisionSizeBDate:13-Jul-2000Sheet of File:D:liwordlihong1.ddbDrawn By:LVTVDCRW1LVAVCCVrefW2MXYZCAVCCLVTVDCRW1LVA1VCCVrefW2MXYZVA2VCCCAVCC电流取样LVTVDCRW1LVAVCCVrefW2MXYZVCC电流取样电流取样-+123456ABCD654321DCBATitleNumberRevisi