A　novel　non-circulating-current　magnetic-integrated　three-bridge　dual-buck　inverter　(DBI)　is　proposed.　By　adding　the　third　bridge,　the　proposed　inverter　can　remove　two　input　capacitances　and　enhance　the　utilisation　of　input　voltage　in　traditional　dual　buck　half-bridge　inverter　(DBHBI).　In　addition,　the　partly　coupled　inductors　with　non-dotted　ends　connected　are　applied　to　elevate　the　power　density.　The　dc　link　diode　is　utilised　to　eliminate　circulating　current　caused　by　magnetic　induction　absolutely.　The　generating　principle　of　circulating　current　and　operating　principle　of　the　proposed　inverter　have　been　analysed　in　detail.　Finally,　experimental　results　are　obtained　on　a　1　kW　prototype　to　verify　the　practical　application　of　the　proposed　inverter.