资源描述：
《Adaptive Voltage Control of the DC-DC Boost Stage》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、5038IEEETRANSACTIONSONPOWERELECTRONICS,VOL.28,NO.11,NOVEMBER2013AdaptiveVoltageControloftheDC/DCBoostStageinPVConvertersWithSmallInputCapacitorAndoniUrtasun,StudentMember,IEEE,PabloSanchis,SeniorMember,IEEE,andLuisMarroyo,Member,IEEEAbstract—Inthecaseofphotovoltaic
2、(PV)systems,anadequate[2],[8],hill-climbing[3],[9],fractionalopen-circuitvoltagePVvoltageregulationisfundamentalinordertobothmaximize[10],andincrementalconductance[11],[12].Someoftheseandlimitthepower.Forthispurpose,alargeinputcapacitorhasalgorithmshavealreadybeenm
3、odifiedmakingitpossibletotraditionallybeenused.However,whenreducingthatcapacitor’soperatebothinMPPTandLPPT[5],[13].size,thenonlinearitiesofthePVarraymaketheperformanceofthevoltageregulationbecomehighlydependentontheoperatingTheoutputreferenceofthesealgorithmscanbeth
4、ePVvolt-point.ThispaperanalyzesthenonlinearcharacteristicsofthePVage[13]–[17],thePVcurrent[18],[19],orjustthedutycycleofgeneratorandclearlystatestheireffectonthecontrolofthedc/dcthedc/dcconverter[5].However,excludinglow-powerapplica-booststageofcommercialconverters
5、bymeansofalinearizationtions,itiswell-knownthatthebestoptionistocontrolthePVaroundtheoperatingpoint.Then,itproposesanadaptivecontrol,voltagesinceitchangesslowlyandismorestable.Controllingwhichenablestheuseofasmallinputcapacitorpreservingatthesametimetheperformanceo
6、ftheoriginalsystemwithalargethePVcurrentcanresultinavoltagedropduringthetransients,capacitor.Experimentalresultsarecarriedoutforacommercialandcontrollingthedutycycleleadstoaninappropriatecontrolconverterwitha40μFinputcapacitor,anda4kWPVarray.TheofPVvoltageandcurren
7、taswellastomorelossesandstressesresultscorroboratethetheoreticalanalysis;theyevidencetheprob-intheconverter[14]–[16],[20],[21].lemsofthetraditionalcontrol,andvalidatetheproposedcontrolThevalueofthePVvoltagereferenceiscontinuouslyupdatedwithsuchasmallcapacitor.bythe
8、MPPorLPPtracker.WhilstinMPPToperationthePVIndexTerms—Adaptivecontrol,photovoltaicconverters,photo-voltageisveryclosetotheMPPvoltage,inLPPToperati
