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1、Abstractdesignofmaintransformer,rectifier,filter,andfullbridgeresonantconverter.UsingthecurrentclosedloopPIsystemandestablishingthedeliveringfunction,theexternalcircuitonUC-3846,drivingcircuitonIGBTandseveralprotestingcircuitisdeveloped.Fullyallowingonthereliabilityindes
2、ign,makingthecircuitsimplifiedaswellasfulfillingallthefunction.Inthethesis,aSoftSwitchingInvertersubmergedarcweldingsupplytypedwithMZ-1000IGBTisdevelopedandimplemented.CheckedwiththedigitaloscilloscopeontheSAWofthecontrolcircuitaregivenandthefoursectiondriving-waveformis
3、stable.TheIGBTofZVSforleading-legswitchesandZCSforlagging-legswitcheshasbeenpresentedandthedoublezeroswitchesintheinverterarefulfilled.Theinverterhasthegoodnessofhigh-efficiencylow-wastage,lowquality,littlevolumeandlownoise.Showingthroughtheexperimentalresult,thearcweldi
4、nginverterhasexcellentstaticanddynamiccharacter,invariablecurrentstabilization.Itisanewtypepowersourcewithwidedevelopingprospect.Keywords:SAW;inverterpowersupply;soft-switching;supplyAbstractABSTRACTThecharacteristic,history,actualityandforegroundofsubmergedarcwelding(SA
5、W)arefirstlyintroducedintheintroductionpartofthispaper.Thenthedevelopment,trendandapplicationofarcweldinginverterareintroducedprecisely.AccordingtotheshortcomingsofconventionalinverterSAW,suchasthebigswitchingstressesofmainpowertransistor,thelargewastageofmachine,thelowr
6、eliabilityandthepollutionfortheelectricnet,thesettlementusingsoft-switchingtechniqueisbrought,andtheresearchstatementaboutsoft-switchingcircuittopologyissummarized.Theoperatingprincipleandmicroprocessorcontrolinverteroflimitedbipolarzerovoltagezerocurrentswitching(ZVZCS-
7、PWM)areanalyzed.Basedonthecircuittopology,themaincircuitandcontrolsystemoftheconverteraredesigned.FBZVZCSPWMcircuitisusedinthemaincircuit,includingthedesignofmaintransformer,rectifier,filter,andfullbridgeresonantconverter.UsingthecurrentclosedloopPIsystemandestablishingt
8、hedeliveringfunction,theexternalcircuitonUC-3846,drivingcircuitonIGBTandseveralprotestingcircuitisdevel
