Dual　buck　inverter　(DBI)　is　an　effective　solution　to　deal　with　inherent　drawbacks　of　bridge　topology.　However,　DBI　does　not　has　the　capability　to　handle　common　mode　(CM)　interference　and　efficient　bidirectional　power　flow.　This　paper　presents　a　modified　bidirectional　dual　buck　DC-AC　converter,　in　contrast　with　traditional　topology　which　can　provide　a　high　efficiency　and　suppress　the　common　mode　current　in　the　meantime.　According　to　structural　improvement,　operation　modes　of　the　converter　has　been　optimized.　In　addition,　the　model　predictive　control　(MPC)　has　been　adopted　to　approach　bidirectional　conversion　and　switching　control.　Finally,　simulation　and　experimental　results　demonstrate　the　feasibility　of　the　implemented　converter　and　the　restraint　of　CM　current.