A Single Phase Boost Switched-Capacitor Multilevel Inverter Topology

Abstract

In this paper a single phase switched-capacitor inverter is presented which generates the nine-level output with two DC sources. Compared to the other multilevel inverters (MLIs), the proposed inverter can reduce the circuit constituents like as power switches, diodes and capacitors which this feature leads to increase in efficiency of the inverter and decreases the switching and conduction losses. Moreover, this topology has the ability to voltage boosting. Another benefit of the presented inverter is the capacitor’s voltage balancing in each cycle that means no need to auxiliary circuits to keep balance the capacitors. Therefore the size, weight, outlay of the inverter and complication of the control strategy is reduced.