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1、IEEETRANSACTIONSONINDUSTRIALELECTRONICS,VOL.56,NO.6,JUNE20091875ModelPredictiveControlofanInverterWithOutputLCFilterforUPSApplicationsPatricioCortés,Member,IEEE,GabrielOrtiz,JuanI.Yuz,Member,IEEE,JoséRodríguez,SeniorMember,IEEE,SergioVazquez,Member,IEEE,andLeopoldoG.F
2、ranquelo,Fellow,IEEEAbstractTheuseofaninverterwithanoutputLCfilterallowsbankresonantfilters[10],[11],andrepetitive-basedcontrollersforgenerationofoutputsinusoidalvoltageswithlowharmonic[12],[13].Sometuningstrategieshavebeenpresented,includ-distortion,suitableforuninterr
3、uptiblepowersupplysystems.ingH-infinitycontroldesign[14].Inmostoftheseschemes,theHowever,thecontrollerdesignbecomesmoredifficult.Thispaperoutputvoltageandoneoftwocurrentsareusedbyacascadedpresentsanewandsimplecontrolschemeusingpredictivecontrolforatwo-levelconverter.The
4、controllerusesthemodelofthecontrolconsideringouterandinnercontrolloops,withlinearsystemtopredict,oneachsamplinginterval,thebehavioroftheornonlinearcontrollers,togeneratethereferencevoltagesandoutputvoltageforeachpossibleswitchingstate.Then,acostbyanexternalmodulatorto
5、generatethefiringpulsesforthefunctionisusedasacriterionforselectingtheswitchingstatepowersemiconductors.thatwillbeappliedduringthenextsamplinginterval.Inaddi-Predictivecontrolappearsasanattractivealternativeforthetion,anobserverisusedforload-currentestimation,enhancing
6、thebehavioroftheproposedcontrollerwithoutincreasingthecontrolofpowerconvertersduetoitsfastdynamicresponsenumberofcurrentsensors.Experimentalresultsunderlinearand[15].Severalcontrolalgorithmshavebeenpresentedunderthenonlinearloadconditions,witha5.5-kWprototype,areprese
7、nted,nameofpredictivecontrol,aspresentedin[16].Themostwell-verifyingthefeasibilityandgoodperformanceoftheproposedknownschemeisdeadbeatcontrol,andithasbeenappliedcontrolscheme.tocurrentcontrolininverters[17],[18],rectifiers[19],activeIndexTermsPowerconversion,predictive
8、control,uninter-filters[20],[21],power-factorpreregulators[22],andUPSs[6],ruptiblepowersystems.[23].Whenimplementedinadigital
