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1!2!1.,!#$%#;&’,!#($#:,º:;;;;:TM402:B:1001-8425(2006)08-0017-051,35kVAC(33kVAC、10kVAC)1180VDC,1500VDC,,。。。24,。、。2,。,。GB/T14549-93《》。,,,,。,,3,3。,,。Equilibriu)urr*+,-+.l/0i0123456ul078r9:,;1+7:,;=;7r/0,7!#$%&’(!)*(+1,-./%$0*2(1.ShanghaiUniversityofScienceandEngineering,Shanghai200335,China;2.ShanghaiHuguangTransformerCo.,Ltd.,Shanghai201209,China)-?0,r9:,:Theequilibriumcurrentin24-pulsetractionrectifiersystemisanalyzed.Therelationbetweencriticalloadandresistanceoftractionrectifiertransformerisdiscussed.@7/A1rB0:!#$%&%’$’()*&+’,’;-./%0%1’%/,2/’’)$;3’%$%2(00+(4;5*%*$()2:2006-04-06:(1947-),,,,,、;(1980-),,,,。==============================================!#$%%&#C-DEFGHI’()*!+,-,./0(*#$%%&431Dy11d0-Dy1d2Fig.1TransformerDy11d0-Dy1d2onnetiondiagram2T1Fig.2VetorgramandstrutureoftransformerT13T1Fig.3TransformerT1vetordiagram,,,,。3,,(T1)Dy11d0,(T2)Dy1d2,D,1。,2(T1)3(T2)。23,,:(1)T1!,1-1112./0!1222132./0(y),!1323112./0(d)。(2)T2!,1-1124./0!122254./0(y),!132364.70(d)。28,,()800(132./09112./0:54./0964./0:800);(),4./0(),T1T21/0(124./09112./0:1/0),3/0(132./0954./0:112./0964./0:3/0),3。4,,1T1,2T2;/。1,!!85Fig.5Retifieronnetiondiagram6()Fig.6Outputwaveform(aperiod)afterretifiationinatransformer8Dy5d0-Dy7d2Fig.8ConnetiondiagramofDy5d0-Dy7d27()Fig.7Outputwaveform(aperiod)afterretifiationintwotransformers6,12,30°。2T1,12,6。,。,T1T2,15°,15°。7,24。7615°。,24。26,Y,D。12。24,,7.5°。45°,15°,24。5Dy5d0-Dy7d2Dy5d0-Dy7d2(D),8,910。,,:(1)T1!5161112758!92:2-3775°(y),!93:311275°(d)。(2)T24Fig.4Vetorrelationbetweentwotransformers!439Dy5d0Fig.9VetorgramofDy5d0transformer10Dy7d2Fig.10VetorgramofDy7d2transformer!!#$%&’(!)$*$+,-&’((.),!)/*/0%&’((1)。,2.’13+2.%1$,,()4’3(5-&’(+(+/%&’()60%&’(+(+,-&’()64’3(7;(),%&’((),88-’((-%&’(+-&’(6’(),9’(5+/%&’(+:+,-&’(;644$&’(+0%&’(69’(7,44。2.’13+2.%1$,’0。9’((4&’=)。4&’=-9。,,2.4413+2.41-2.’13+2.%1-9’((4&’=)。,,,。611Dy5d0Dy7d2Fig.11VoltagevetorgramofDy5d0andDy7d2transformer!!8,:(1),,,Dy11d0-Dy1d2Dy5d0-Dy7d2。(2)Dy11d0-Dy1d2,12。24,。Dy5d0-Dy7d2。,。,。(3)2412,24。(4)。Dy11d0Dy1d2,。24,,,,。。2412,,,,24。、24,,,24。:[1],.[M].:,2000.[2].[M].:,2000.[3].1224[J].,1999,36(5):1-8.[4],,.24[J].,2002,39(10):9-10.[5],.24[J].,2003,40(1):1-7.Vectorgrama*+,-t.-t/a0e1ormo12e3t414er5*4t4*6-789:!#$%&!’()1*!+$,-&%.!/(%2(1.TechnologyInstituteofRailwayJobofGuangzhou,Guangzhou510430,China;2.SouthChinaUniversityofTechnology,Guangzhou510640,China);=tr93t:Themainfactorstochooseconnectionmodeofrectifierunitarediscussed.Thevec-torgramsoftransformerindifferentconnectionmodesandtheoutputvoltagewaveformafterrectifyingareanalyzed.e:8or+=:!#$%&;’()*+,+(-.+*;/-0.1,2-3(-;4()*2-5-03;607(,2-3:2005-05-23:(1971-),,,,,;(1963-),,,,,。!