The　wide　distribution　of　renewable　DC　microgrids　can　easily　cause　large　fluctuations　when　energy　is　connected　to　the　grid.　In　order　to　further　solve　the　problem　of　terminal　voltage　fluctuation　in　energy　transmission,　the　dual　active　bridge(DAB)　structure　is　widely　used.　Discrete　Model　Predictive　Control　(DMPC)　based　on　bidirectional　dual-phase-shift(BDPS)　control　is　proposed　to　further　improve　the　stability　and　the　dynamic　performance　of　fast　tracking　of　the　output　voltage　of　the　DC　converter　system.　By　integrating　a　simplified　model　of　the　dual　active　bridge　circuit　and　the　power　transmission　characteristics　of　the　converter,　a　predictive　model　under　the　given　mode　is　established.　Reasonable　design　of　the　cost　function　of　the　prediction　model　and　feedforward　compensation　of　the　prediction　value　further　improve　the　accuracy　of　the　prediction　model.　The　good　dynamic　performance　of　the　control　method　is　verified　by　simulation,　and　a　comparative　analysis　is　also　carried　out　in　combination　with　different　control　methods.　©　2021　IEEE.