The ANALYSIS iOF iHIGH iEFFICIENCY iBASED iHYBRID-TYPE iFULL-BRIDGE iCONVERTER

Abstract

iThis ipaper ipresents ia ihybrid-type ifull-bridge idc/dc iconverter iwith ihigh iefficiency. iUsing ia ihybrid icontrol ischeme iwith ia isimple icircuit istructure, ithe iproposed idc/dc iconverter ihas ia ihybrid ioperation imode. iUnder ia inormal iinput irange, ithe iproposed iconverter ioperates ias ia iphase-shift ifull-bridge iseriesresonant iconverter ithat iprovides ihigh iefficiency iby iapplying isoft iswitching ion iall iswitches iand irectifier idiodes iand ireducing iconduction ilosses. i iWhen ithe iinput iis ilower ithan ithe inormal iinput irange, ithe iconverter ioperates ias ian iactive-clamp istep-up iconverter ithat ienhances ian ioperation irange. iDue ito ithe ihybrid ioperation, ithe iproposed iconverter ioperates iwith ilarger iphase-shift ivalue ithan ithe iconventional iconverters iunder ithe inormal iinput irange. iThus, ithe iproposed iconverter iis icapable iof ibeing idesigned ito igive ihigh ipower iconversion iefficiency iand iits ioperation irange iis iextended. iA i1-kW iprototype iis iimplemented ito iconfirm ithe itheoretical ianalysis iand ivalidity iof ithe iproposed iconverter.