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1、电子焊机资料（Electronicwelderdata）Powerelectronicstechnology2001th22001.4Articlenumber1000-100X(2001)-02-0031-03High-powerResearchonIGBThighfrequencyinverterweldingmachineResearchofWelderBasedonPowerHighFrequencyInverterZhejiangUniversityHangzhou310027)abstractTo:IGBThighfrequencyinverter
2、weldingmachineisanalyzedandcalculatedindetailThesystemstructureandthechoiceofparametersarediscussed,DriverandprotectionofIGBTThedesignofprotectionandhighfrequencytransformerhasbeenanalyzedandstudiedTheprototypetestshowsthattheanalysisisfeasible.Abstract:Thispaperpresentsadetailanaly
3、sisoftheweldersystem,whichisbasedontheIGBThighfrequencyin2Verter.ItdealswiththeMaking2upofthesystem,theselectionofparameters,thedriveandprotectcircuitsofIGBT,theHighfrequencytransformerdesign,andsoon.KeywordsPulsewidthmodulationweldingmachineInsulatedgatebipolartransistorhighfrequen
4、cyinverterKeywords:PWM;welder;IGBT;highfrequencyinverterCLCnumberTG434.1documentidentificationcode:A1IntroductionWiththedevelopmentofscienceandtechnologyThetraditionalpowerfrequencyelectricweldingmachineEnergyconsumption,heavyweight,largevolume,poorweldingperformanceandothershortcom
5、ingscannotbeMeettheneedsofallwalksoflifeTherefore,itisurgenttoresearchanddevelopbetterperformanceAlternativeproducts.ThecontinuousdevelopmentofpowerelectronictechnologyForthedevelopmentofhighFrequencyinverterweldingmachinelaidthefoundation.Inthispaper,wegiveabriefaccountofIGBTforKey
6、technologyofhighfrequencyinverterweldingmachinedevelopedbymainswitchdeviceIncludingmasterThestructureandparametercalculationofthecircuit,Selection,driveandprotectionofIGBT,Designofhighfrequencytransformer,dynamicanalysisofcontrolloop,etc..2systemstructureandworkingprinciple[1,2]Main
7、circuitinputrectifier,inverter,outputrectifierandothermajorpartsFormThestructureofcontrolloopisshowninFigure1.chart1controlcircuitblockdiagramAdjustingweldingcurrentandpulsewidthbycurrentregulatorPWMpulsePunchgenerator30kHzPWMpulsetrain.PulseisolationLargewillbebig30kHzPWMpulsecolum
8、nisolationamplifica
