In　order　to　realize　a　single-stage　single-phase　boost　inverter　and　effectively　suppress　the　secondary　ripple　current　on　the　DC　side,　a　current　inverter　circuit　topology　with　source　buffer　was　proposed.　Six　circuit　modes　of　the　inverter　were　investigated　and　two-modal　modulation　strategies　and　three-modal　modulation　strategies　were　proposed.　A　model　prediction　control　strategy　under　the　two　modulation　strategies　was　designed,　and　design　guidelines　for　the　parameters　of　the　main　circuit　were　provided.　The　two　modulation　strategies　were　compared　and　analyzed　in　terms　of　the　maximum　pulsation　of　the　storage　inductor　current　and　the　secondary　ripple　content.　It　is　concluded　that　the　three-modal　modulation　strategy　has　a　better　ripple　suppression　effect.　The　inverter　under　the　two　modulation　strategies　was　simulated　and　analyzed,　and　the　simulation　results　show　that　the　total　harmonic　distortion　rate　of　the　output　voltage,　the　relative　pulsation　and　dual　frequency　content　of　the　inductor　current　under　three-mode　modulation　are　lower　than　those　under　two-mode　modulation.　A　500VA　48VDC/220V50HzAC　active　buffered　single-stage　single-phase　boost　inverter　experimental　setup　was　designed　and　constructed,　and　the　experimental　waveforms　of　the　inverter　based　on　the　model　predictive　control　under　the　three-mode　modulation　were　given,　which　further　confirms　that　the　proposed　research　scheme　has　the　ability　of　secondary　ripple　suppression　while　realizing　the　single-stage　boost　inverter.　©　2024　Editorial　Department　of　Electric　Machines　and　Control.　All　rights　reserved.