Quadra-Boost Switched Capacitor Inverter (QBSCI) Topology With Reduced Components and On State Switches With Minimum Total Blocking Voltage

Abstract Switched Capacitors are an effective way to reach greater voltage levels while reducing the requirement for numerous DC sources by maximizing the stored energy in capacitors. However, establishing Multi-Level Inverters (MLIs) with minimal sources, switches, and capacitors is a significant challenge. This paper describes a novel boost-type multilevel inverter known as the “Quadra-Boost Switched Capacitor Inverter" (QBSCI). This arrangement significantly decreases the overall quantity of components as well as on-state switches, resulting in lower losses and enhance the efficiency. The suggested architecture has various benefits, such as a fourfold rise in voltage capacity, decreased overall blocking voltage and self-balancing capacitor voltages. An elegant series-and-parallel connection of switching capacitors forms the foundation of the structure. This study focuses on operational concepts, including the process of maintaining capacitor voltage balance. Its superior performance is confirmed by extensive comparisons with state-of-the-art alternatives and rigorous loss studies. Simulation findings for numerous test situations, as well as experimental data from a well-equipped laboratory, support the suggested QBSCI's performance. This study highlights the QBSCI's capacity to handle the issues of high-voltage MLIs while reducing component count and increasing efficiency.