An DPWM for Active DC-Link Type Quasi-Z-Source Inverter to Reduce Component Voltage Rating

The conventional DC-link type quasi-Z-source inverter has been known as a buck–boost with low component voltage rating. This paper proposes an active by adding one switch and diode to the impedance-source network enhance gain of inverter. As result, rating is significantly reduced, which demonstrated through some comparisons between proposed topology others. A discontinuous pulse width modulation (DPWM) scheme control inverter, reduces number commutations compared traditional strategy. Under this approach, insertion shoot-through state does not cause any extra voltage-source Details about implementation, steady-state analysis, design guidelines are also presented in paper. Simulation laboratory prototype have built test Both buck boost operations implemented validate performance