The　circuit　topology　of　full-bridge　Boost　multi-input　DC-DC　converter　type　grid-connected　inverters,　the　maximum　power　output　with　the　power-limiting　loop　energy　management　control　strategy,　and　the　clamp-capacitor-　based　magnetic　saturation　suppression　of　energy　storage　inductor　startup　scheme　were　proposed　and　deeply　investigated.　Meanwhile,　the　high　frequency　switching　process　analysis,　voltage　transfer　ratio　derivation　and　active-clamp　circuit　design　were　provided.　The　circuit　topology　is　composed　of　a　full-bridge　Boost　type　multi-input　DC-DC　converter　and　a　cascaded　Buck　inverter.　The　control　strategy　adds　a　power-limiting　loop　into　the　MPPT　voltage　loop,　to　prevent　the　DC　bus　voltage　rising　by　reducing　the　duty　cycle　of　the　converter　under　abnormal　conditions.　The　magnetic　saturation　suppression　startup　scheme　takes　2m　switching　periods　as　a　control　period,　in　which　the　power　switches　of　high-frequency　inverter　circuits　and　active-clamp　switch　work　alternatively.　Designed　1kVA　dual-input　inverter　prototype　has　the　advantages　such　as　high-frequency　isolation,　simultaneous-supplying　of　multiple　input　sources,　wide　regulating　range　of　duty　cycle,　high　conversion　efficiency,　full　use　of　new　energy　and　high　reliability.　©　2017　Chin.　Soc.　for　Elec.　Eng.