Open AccessTHD Minimization in Cascaded H-Bridge Inverter using Optimal Selective Harmonic Elimination
Author(s) -
K. Venkateswara Rao,
G. Ramana Rao
Publication year - 2021
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.b5984.0710221
Subject(s) - inverter , total harmonic distortion , harmonics , control theory (sociology) , harmonic , minification , modular design , mathematics , computer science , engineering , voltage , mathematical optimization , physics , electrical engineering , control (management) , acoustics , artificial intelligence , operating system
Cascaded structured multilevel inverters are gaining lot of importance due to their simple structure and easiness in implementation. In this paper, the optimum selective harmonic elimination method is employed for a nine level inverter to suppress the selected lower order harmonic, which reduces the total harmonic distortion of the inverter considerably. The Newton rapson algorithm is employed in finding the switching angles that minimizes certain lower order harmonics. The order of the harmonics that are eliminated are third, fifth, and seventh harmonics. All the simulation results included for a nine level inverter using SIMULINK. Index Terms: Nine level MLI, Control of inverter, Modular Inverter.