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1、上海交通大学硕士学位论文基于SOPC技术的数字变频电源设计姓名：王青申请学位级别：硕士专业：电力电子与电力传动指导教师：常越20070201DESIGNOFVARIABLEFREQUENCYPOWERSUPPLYBASEDONSOPCABSTRACTFromthelastseveraldecadesofthe20thcentury,thetechnologyofmicro-electronicsdevelopedsorapidlythatthepreviouselectricalsystemformedbymanyseparatedchipscanbei
2、ntegratedononechip,formingSOC(SystemonChip).TheSOCcanmakedifferentfunctionstogether,suchassignalsamplingandprocessing,inputandoutput,andsoon.Nowadays,thedesignofelectricalsystemischangingfromPCBleveltoASICorFPGA,whichiscalledSOPC(SystemonProgrammableChip).TheSOPCdesign,basedonIPC
3、ore,useshardwaredescriptionlanguageasmainmethodandEDAtoolsasassociatedmethod.Inthetraditionalpowersystem,thecontrolpartdependsonanalogsignal.Althoughmicro-processorsareoftenusedininvertedpowermodule,themainfunctionofmicro-processorsonlyincludeproducingsinewave,controllingtheonand
4、offstate,protectinganddisplayingbecauseofitsspeed,sotheinverter,whichisthecoreofinvertedpowerstillneedsanalogcircuittofulfill,resultinghighcost,lowprecisionandlowflexibility.ThisprojectisbasedonSOPCsystem,usingtheFPGA(CycloneII)madebyAlteraCorporationasthemaincontroller.Thefuncti
5、onsofSPWM,UART,LCDaredevelopedbythehardwaredescriptionlanguageVerilogHDL.TheNiosIIcoreusesCprogramminglanguage.Thesenewmethodsmakethewholesystemmoreflexibleandmoreeffective.Thevarious-frequencypoweriscontrollerbydigitalsignal,sohasthestrengthofhighprecisionandbetterstableness.The
6、frequencyrangesfrom20.0Hzto100.0Hz,withtheprecisionof0.1Hz.Theamplituderangesfrom10%to100%,withtheprecisionof1%.Accordingtoactualtest,thesystemisreliable.KEYWORDS:SOPC、NiosCore、FPGA、SPWM、VariableFrequencyPowerSupply–IV–图片目录图1.1交－直－交变换器结构图··········································
7、···································7图2.1系统整体结构图···························································································11图3.1系统整体结构图···························································································13图3.2QuartusII软件图形用户界面的功能············
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