A Novel Dual Buck Half Bridge Five-level Inverter

A novel dual Buck half bridge five-level inverter (DBHBFLI) was presented in this paper, using dual Buck circuit as the basic unit to build multilevel inverter. The topology of this inverter is different from the traditional multilevel inverters such as flying-capacitor multilevel inverter, diode-clamp multilevel inverter and cascade multilevel inverter, and it retains dual Buck half bridge inverter's (DBHBI) merits of no shoot-through problem, no body diode reverse-recovery problem, and half-period work mode. Compared with traditional multilevel inverter, clamp circuits are simplified, the complexity of circuit is reduced, and the stability of system is improved. The proposed inverter reaches a high efficiency and its filter is much small at the same time. Experiment verifies these analyses.