A Single-Phase Symmetrical Embedded Modified-Quasi-Z-Source Hybrid Three-Level Inverter

Abstract

This paper proposes the novel topologies implemented by embedding a single dc voltage source or two separate dc voltage sources in the impedance network of an existing modified quasi-Z-source (MqZS) hybrid three-level inverter topology, which combines the modified quasi-Z-source impedance and the hybrid three-level inverter. The proposed topology can provide the continuous dc source currents without any additional external filter, and can increase the boost factor by a factor of two by embedding two separate dc sources in the impedance network. The operating principle of the proposed topologies is analyzed, and the performances of the proposed topology are demonstrated by the simulation and experimental results.