大功率IGBT模块并联均流问题研究

IGBT,,(,710048):IGBT,IGBT,,:;/;:TN86:A:1000-100X(2004)01-0004-03StudyoftheCurrentBalanceofIGBTsinParallelingSUNQiang,WANGXue2ru,CAOYue2long(XianUniversityofTechnology,Xian710048,China)Abstract:ToextenttheratingrangeofcurrentofIGBT,theparallelmethodsarepresentedinthispaper.Thefac2torsledtocurrentunbalancesofeachIGBTinparallelareanalyzedandcorrespondingsolutionsareproposed.Theeffectsareverifiedbysimulationandexperiments.Keywords:IGBT;parallel;on2statecurrentbalance;dynamiccurrentbalance1IGBTGTRMOSFET,,,:;IGBT,IGBT,IGBT,,,2IGBT:VCE(sat);,:(2001BA311A0623):2003-10-10:(1955-),,,,2.1(1),VQ1,VQ2()11IGBTVo1,Vo2VQ1,VQ2V1,V2IC2,IC1VQ1,VQ2[1]:VCE(sat)1=Vo1+r1IC1(1)VCE(sat)2=Vo2+r2IC2(2)r1=V1IC1-IC2,r2=V2IC1-IC2VQ1,VQ2,:VCE(sat)1=VCE(sat)2ICtot=IC1+IC2:IC1=Vo2-Vo1+r2ICtotr1+r2(3)IC2=Vo1-Vo2+r1ICtotr1+r2(4):438120042PowerElectronicsVol.38,No.1February,2004=IC1-IC2ICtot=2(Vo2-Vo1)(r1+r2)ICtot+r2-r1r1+r2(5)Vo1µVo2,ICtot,:µr2-r1r1+r2(6)Vo1µVo2,(VCE/IC),,VCE(sat)(2)VCE(sat),,s[2]:s=1-ITnpIM(7)sITIMnp(7):IT=(1-s)npIM(8)VCE(sat),,IGBT2.2VCE(sat),,,(1)22:VGE,IGBT,2(2),,d[2]:d=1-[(np-1)(1-)+1]/np(9),=IC(PK)/IC(PKmax),IC(PK)=IC(PKmax)-IC(PKmin)IC(PKmax)IC(PKmin),,(3);;;2.3:;;,;,,10,,,;,[3],,3,PSPICEIGBT;33VI1,VI2()IGBTCM300DY-28HPSPICE,2800V,300A,3,(1)VI1,VI23.1V,2.5V5IGBT,434VCE(sat)(2)VI1,VI2Vth7.0560V,6.5560V,55Vth,45:,,,4250kVA,,40H,SKM400GB176D,IGBT3,:Vcc=500V;10%;600Hz666IGBTIGBT,,IGBT5,,,,,,,,,;,;,[1]HeJ,JacobsME.Non2DissipativeDynamicCurrent2Shar2ingSnubberforParallelBoostConnectedIGBTsinHighPowerConverters.IEEEAPECConf.99,1999,2:11051111.[2]DynexSemiconductor.AN5505.ParallelOperationofDynexIGBTModules[Z],2001.[3]InternationalRectifierApplicationNotes.AN990.Appli2ca2tionCharacterizationofIGBTs[Z],2002.638120042PowerElectronicsVol.38,No.1February,2004