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1、DesignofLinearControllersappliedtoanethanolsteamreformerforPEMfuelcellapplicationsaabaVanesaM.García*,MariaSerra,JordiLlorca,JordiRieraaInstitutdeRobòticaiInformàticaIndustrial(CSIC-UPC).LlorensiArtigas4-6,08028Barcelona,Spain.bInstitutdeTècniquesEnergètiques.UniversitatPolitècnicadeCatalu
2、nya.Diagonal647,ed.ETSEIB.08028Barcelona,Spain.Keywords:Hydrogengeneration,Ethanolsteamreforming,Lowtemperaturereforming,MIMOsystems,Linearcontrol*Correspondingauthor:VanesaM.GarcíaInstitutdeRobòticaiInformàticaIndustrial(CSIC-UPC)LlorensiArtigas4-6,08028Barcelona,SpainTel.:(+34)934015789F
3、ax.:(+34)934015750e-mail:vgarcia@iri.upc.eduAbstractThispaperfocusesonthedesignofacontrollerforalowtemperatureethanolsteamreformerfortheproductionofhydrogentofeedaProtonicExchangeMembrane(PEM)fuelcell.Itdescribesdifferentcontrolstructuresforthereformerandtreatsthecontrolstructureselectiono
4、fthisMultipleInputMultipleOutput(MIMO)system.Foreachcontrolstructure,decentralised2x2controllerswithProportionalIntegral(PI)controlactionsineachcontrolloopareimplemented.ThePIparametersaretunedandtheperformanceofthedifferentlinearcontrollersiscomparedthroughsimulation.Fortheevaluationofthe
5、proposedcontrollers,thedynamicresponsefordifferentinitialconditionsandchangesinthereferencesisanalysed,aswellasthebehaviourofthecontrolledsystemagainstdisturbances.1.IntroductionBio-ethanolisconsideredaCO2-neutralfuel,suitedtodiminishtheuseoftheconventionalfossilfuelsbasedonpetroleumandnat
6、uralgas.Inpreviouscontributions[1-2]theauthorsreportedresultsaddressingthedynamicmodellingandcontrollabilityanalysisofalowtemperaturecatalyticethanolsteamreformerforfuelcellhydrogenfeeding.Inthiswork,thedesignoflinearcontrollerssuitableforthisethanolreformerisreportedandacomparativeanalysi
7、sbetweendifferentcontrollersisperformedthroughsimulation.Giventhehighnonlinearityofthereformer,thetuningandsimulationtasksofthework,basedonanonlinearmodel,arefundamentaltovalidatethepreviouscontrollabilityanalysisresults,whichwerebasedonalinearmodel.Upuntilnow
