A New H-bridge Switched Capacitor Based Five Level Inverter

Non-isolated multilevel inverters are becoming more popular due to their voltage boosting capability and reasonable cost. Unfortunately, they suffer from leakage current issues and posess a step down nature in output voltage. This article introduces a new H-bridge switched capacitor based five level inverter, derived by integrating a switched capacitor module and an H-bridge inverter. This topology is able to overcome the abovementioned limitations and provides double voltage boosting within a single stage operation. In addition, it requires only one capacitor as a storage element and produces less voltage induced stress on devices. The detailed analysis for different modes of operation is performed. MATLAB/Simulink tool is utilized to perform the simulation works and relevant results are presented.