A Novel Single-Source Single-Stage Switched-Boost Five-Level (S5B5L) Inverter With Dynamic Voltage Boosting Feature

Publication Type:
Conference Proceeding
2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021, 00, pp. 2557-2562
Issue Date:
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Single-source inverters with integrated switched-boost (SB) module and single-stage energy power conversion architecture have become a popular solution in many power electronics applications. This paper presents a novel topology of such types of inverters, which offers a modular design with a dynamic voltage boosting feature over a wide range of input voltages. The basic configuration of the proposed topology is able to generate three output voltage levels. It is comprised of an integrated SB module and a Quasi-H-Bridge (QHB) cell. The QHB cell consists of a self-balanced floating capacitor and four power switches, and the SB cell consists of a boost inductor and a single power switch. A five-level boosted output voltage can be achieved through the differential connection of two identical QHB cells utilizing a single SB module. The circuit description of the proposed topology, a comparative study, and the simulation and measurement results are given to verify the feasibility of this proposal.
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