An eleven level single source switched capacitor boost inverter with reduced component stress and limited inrush...

One of the most important advanced and efficient technologies in converting DC electrical energy to AC is switched-capacitor multilevel inverters with reduced charging current, which enable output voltage boosting. This paper proposes a structure based on the switched-capacitor technique. The proposed structure, which consists of a single voltage source, 10 power electronic switches, 3 capacitors, and one diode, generates an 11-level stepped voltage waveform at the output with an output voltage amplitude up to 2.5 times the input voltage. This structure produces both positive and negative voltage levels without the need for an H-bridge and imposes appropriate voltage stress on the components. In the proposed structure, since a maximum of two switches are involved in the charging path of the capacitors, the current stress on the switches is minimal, resulting in low losses for the proposed structure. A comprehensive comparison based on important performance parameters has been conducted with other structures to evaluate the efficiency of the proposed topology. The operation of the proposed structure was first assessed in the Simulink environment of Matlab under various loading conditions and subsequently validated through the implementation of an experimental prototype. This structure is capable of supplying inductive loads with different power factors and is suitable for industrial applications.