Work

Switched-Inductor Extended-Boost Quasi-Z-Source Inverter

Year: 2025

Type: article

Abstract: This paper introduces two novel impedance source inverter topologies for switched-inductor extended-boost quasi-Z-source inverters: diode-assisted and capacitor-assisted switched-inductor extended-boost quasi-Z-source inverters. The proposed topologies exhibit a significant voltage boost capability while operating at a lower shoot-through duty ratio. These inverters can operate at higher modulation indices by employing a low shoot-through duty ratio, improving the output voltage performance and reducing the stress on inverter switches. A comprehensive analysis of the operation of inverters in both the shoot-through and non-shoot-through states was performed. Mathematical derivations were provided to determine the boost factor and design the impedance network parameters. The theoretical analysis was further validated through computer simulations using the PSCAD software and experimental results. A laboratory prototype was constructed to verify the simulation results and demonstrate the high-gain capabilities of the proposed inverters. A detailed analysis of the capacitor voltages, diode stress, and switch stress of the proposed inverters was performed. These parameters were compared with the existing inverter topologies documented in the literature. This comparison offers insights into the superior performance and advantages of the proposed diode-assisted and capacitor-assisted switched-inductor extended-boost quasi-Z-source inverter.

Source: IEEE Access

DOI: 10.1109/access.2025.3569076

Authors: Abhishek Paikray, Dezi Shrivastav, Sisir Kumar Nayak

Institutions: Indian Institute of Technology Guwahati, Genpact (United States)

Language: English

Topic: Advanced DC-DC Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,075