Manuscript Title:

BINARY HYBRID 31-LEVEL MULTILEVEL INVERTER WITH REDUCED NUMBER OF SWITCHES

Author:

MUNA HASSAN HUSIEN, MOHAMMED ALI AL-RAWI

DOI Number:

DOI:10.17605/OSF.IO/7DFCX

Published : 2022-12-23

About the author(s)

1. MUNA HASSAN HUSIEN - Electrical Engineering Department , Collage of Engineering ,University of Mosul, Mosul,Iraq.
2. MOHAMMED ALI AL-RAWI - Electrical Engineering Department , Collage of Engineering ,University of Mosul, Mosul,Iraq.

Full Text : PDF

Abstract

A binary hybrid 31-level multi-level inverter is proposed in this paper for medium voltage applications, and compared with a conventional cascaded H-bridge inverter. The main drawback of conventional topology is a large number of power supplies and semiconductors required to generate these multistep voltage waveforms. Due to the hybrid structure inverter, 31 levels can be manufactured with the fewest number of components, as only 12 switches were used. As the number of output voltage levels increases, the proposed architecture reduces the number of IGBTs and gate driver circuits significantly. The proposed inverter can generate high-quality output voltage close to the sine wave. The circuit of the hybrid inverter and cascaded H-bridge inverter was simulated using the MATLAB program. A fast Fourier transform analysis of the output voltage waveforms was performed, which resulted in a total harmonic distortion value of 3.60% in the hybrid inverter while the total harmonic distortion value was in the bridging modulator. 3.74%.


Keywords

Multilevel-Inverter (MLI), Cascaded H-Bridge multilevel inverter (CHB-MLI), Total harmonic distortion (THD), Hybrid Multilevel inverter (HMLI).