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A Novel Three-Phase Switched-Capacitor Five-Level Multilevel Inverter with Reduced Components and Self-Balancing Ability

Authors :
Kasinath Jena
Dhananjay Kumar
Kavali Janardhan
B. Hemanth Kumar
Arvind R. Singh
Srete Nikolovski
Mohit Bajaj
Source :
Applied Sciences, Vol 13, Iss 3, p 1713 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

This paper proposes a step-up 3-Ф switched-capacitor multilevel inverter topology with minimal switch count and voltage stresses. The proposed topology is designed to provide five distinct output voltage levels from a single isolated dc source, making it suitable for medium and low-voltage applications. Each leg of the proposed topology contains four switches, one power diode, and a capacitor. The switching signals are also generated using a staircase universal modulation method. As a result, the proposed topology will operate at both low and high switching frequencies. To highlight the proposed topology’s advantages, a comparison of three-phase topologies wasperformed in terms of the switching components, voltage stress, component count per level factor, and cost function withthe recent literature. The topology achieved an efficiency of about 96.7% with dynamic loading, and 75% of the switches experienced half of the peak output voltage (VDC), whereas the remaining switches experienced peak output voltage (2VDC) as voltage stress. The MATLAB/Simulink environment was used to simulate the proposed topology, and a laboratory prototype was also built to verify the inverter’s theoretical justifications and real-time performance.

Details

Language :
English
ISSN :
20763417
Volume :
13
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.2b92bba5a3cb487687fda86c7bfdbae7
Document Type :
article
Full Text :
https://doi.org/10.3390/app13031713