Different Asymmetric DC Configuration in Reduced-Switch Multilevel Inverter: A Comparative Topological Analysis

Siti Khodijah Mazalan; Baharuddin Ismail; Zainuddin Mat Isa; Muzamir Isa; Syahril Noor Shah; Md. Hairul Nizam Talib

doi:10.37934/sijese.5.1.1930

Authors

Siti Khodijah Mazalan Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis, Pauh Putra Campus, 02600 Arau, Perlis, Malaysia
Baharuddin Ismail Centre of Excellence for Renewable Energy, Universiti Malaysia Perlis, Pauh Putra Campus, 02600 Arau, Perlis, Malaysia
Zainuddin Mat Isa Centre of Excellence for Renewable Energy, Universiti Malaysia Perlis, Pauh Putra Campus, 02600 Arau, Perlis, Malaysia
Muzamir Isa Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis, Pauh Putra Campus, 02600 Arau, Perlis, Malaysia
Syahril Noor Shah Faculty of Electrical Engineering & Technology, Universiti Malaysia Perlis, Pauh Putra Campus, 02600 Arau, Perlis, Malaysia
Md. Hairul Nizam Talib Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka

DOI:

https://doi.org/10.37934/sijese.5.1.1930

Keywords:

Multilevel inverter, reduced-switch, THD, asymmetric DC source

Abstract

Multilevel inverters are becoming more appealing by eliminating the need for filter circuits. As a result, this type of inverter can reduce total harmonic and improve output waveform quality. However, it causes a large number of switches, so a reduced-switch topology is used for a compact and cost-effective inverter. This paper examines a different DC source and switching circuit arrangement for 15-level reduced-switch multilevel inverters (RSMLI). PSIM software is used to model both circuits. The goal is to observe and comprehend the differences in the number of DC sources, switches, and circuit complexity for the same level inverter and to understand how these parameters affect inverter performance. According to the findings, the formulation of the number of DC voltage counts, its switching circuit, and structure arrangement all have a different effect on RSMLI reliability.