Abstract-Thispaperproposesfilterdesignguidelineforsingle-phasegrid-connectedPVinverters.Byanalyzingtheinstantaneousvoltageappliedonthefilterinductor,theswitchingripplecurrentthroughthefilterinductorispreciselycalculated.Therefore,filterinductancecanbedesignedaccuratelywhichguarantiestheswitc