An Asymmetric Minimal Component Count Three-Phase Multilevel Converter Suitable for PV Applications

Samuel Nii Tackie, Zubeir Mohamed Nur, Ozgur Cemal Ozerdem, William Olurotimi Falana

2025

Abstract

Multilevel inverters' well-enhanced DC-AC power conditioning feature makes them suitable for medium and high-power applications such as grid-tied PV systems. This paper proposes an asymmetrical three-phase multilevel inverter with minimal component count. The proposed three-phase topology is an improved architecture derived from the conventional H-bridge by incorporating extra switches and a DC source, thus resulting in a minimal component count structure. The system achieves 31-levels of load voltage, and the components employed per phase are 12 switches, 12 driver circuits, and 6 DC input sources. The proffered three-phase topology employs an extension technique in its connection to minimize the DC source components by a factor of 2. Increasing the phase count minimizes the voltage count significantly. The remarkable benefits of the presented inverter are higher voltage levels, high-quality output waveforms, reduced total standing voltage (TSV), minimized switching losses, less installation space, and reduced cost. The inverter’s control technique is based on the fundamental frequency control method. Analysis of the topology’s components usage was conducted and compared to existing recent topologies. PSCAD/EMTDC software is used for the simulation, and the results validate the TSV and the performance of the inverter.

Paper Citation

in Harvard Style

Tackie S., Nur Z., Ozerdem O. and Falana W. (2025). An Asymmetric Minimal Component Count Three-Phase Multilevel Converter Suitable for PV Applications. In Proceedings of the 2nd International Conference on Advances in Electrical, Electronics, Energy, and Computer Sciences - Volume 1: ICEEECS; ISBN 978-989-758-783-2, SciTePress, pages 153-163. DOI: 10.5220/0014288800004848

in Bibtex Style

@conference{iceeecs25,
author={Samuel Nii Tackie and Zubeir Mohamed Nur and Ozgur Cemal Ozerdem and William Olurotimi Falana},
title={An Asymmetric Minimal Component Count Three-Phase Multilevel Converter Suitable for PV Applications},
booktitle={Proceedings of the 2nd International Conference on Advances in Electrical, Electronics, Energy, and Computer Sciences - Volume 1: ICEEECS},
year={2025},
pages={153-163},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0014288800004848},
isbn={978-989-758-783-2},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 2nd International Conference on Advances in Electrical, Electronics, Energy, and Computer Sciences - Volume 1: ICEEECS
TI - An Asymmetric Minimal Component Count Three-Phase Multilevel Converter Suitable for PV Applications
SN - 978-989-758-783-2
AU - Tackie S.
AU - Nur Z.
AU - Ozerdem O.
AU - Falana W.
PY - 2025
SP - 153
EP - 163
DO - 10.5220/0014288800004848
PB - SciTePress