Asanewenergytechnologywithdistributedgenerationprospects,theload-followingcapabilityofsolidoxidefuelcell(SOFC)systemsisoneofthemainobstaclesforcommercialoperation.Thispaperintroducesatimedelaycontrolwithanobserver(TDO)inthefuelsupplysystemtoenhancetheload-followingcapabilitytorealize