Optimization-Based Selective Harmonic Elimination for an 11-Level Cascaded H-Bridge Inverter: A Comparative Study

Tabreer T. Al-Shouka; Sarah Amjad Inad; Mohammed Abed

doi:10.51173/ijds.v3i2.83

Authors

Tabreer T. Al-Shouka Computer and Information Technology College, Anbar University, 31001, Iraq. https://orcid.org/0009-0002-6656-5998
Sarah Amjad Inad Computer and Information Technology College, Anbar University, 31001, Iraq https://orcid.org/0009-0004-4666-5961
Mohammed Abed Electrical Engineering College, Babol Noshirvani University of Technology, 47134, Iran https://orcid.org/0009-0009-0000-8292

DOI:

https://doi.org/10.51173/ijds.v3i2.83

Keywords:

Multi-level Inverter (MLI), Selective Harmonic Elimination (SHE), Genetic Algorithm (GA), Gravity Search Algorithm (GSA), Particle Swarm Optimization (PSO)

Abstract

Unlike previous studies, this document proposes an informed baseline solution to SHE. The proposed initialization significantly reduces the search area and the number of iterations needed to converge, while maintaining a high harmonic elimination precision. In this research, a method for multilayer inverters (MLIs) that is based on an initial solution is presented for SHE. The goal is to resolve the SHE issue with high accuracy while simultaneously reducing the number of iterations by a significant amount. The SHE solution is defined as a set of switching angles; the SHE method is implemented to reduce harmonic distortion. To determine the SHE solution, a comparative analysis was conducted on an eleven-level inverter based on the SHE technique, utilizing the Genetic Algorithm, particle swarm optimization algorithm, and gravity search algorithm. MATLAB/SIMULINK simulations with modulation indices of 0.85 were used to solve the multidimensional SHE problem. An inverter with a single-phase Cascade H-bridge (CHB) configuration and 11 levels is used to implement the algorithm.

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