In order to increase the output level of multilevel inverter and enhance the output voltage gain

a single-input switched capacitor multilevel inverter with boost capability is proposed in this paper. The inverter can achieve nine-level voltage output and four times boost gain by controlling the unequal charging of two capacitors and the series-parallel conversion between the power supply and capacitors. In this inverter

a single DC input source is employed

and it has the advantages of simple circuit structure

few power components

more output levels and strong boost gain. Moreover

the capacitor voltage self-balancing can be achieved without additional complex control circuit. In this paper

the topology

working principle

and modulation strategy of the inverter are presented

the factors which affect capacitor voltage ripple are analyzed

and the topology is compared and analyzed. Finally

the proposed inverter is verified by simulation and experiment. The results show that the inverter has good performance under the conditions of both steady and dynamic states.