Open AccessHarmonic analysis in modified cascaded multilevel inverter with nature-inspired switching-angle optimization algorithm
Author(s) -
Y. W. Sea,
W. T. Chew,
J. S. L. Ong,
J. H. Leong
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1997/1/012027
Subject(s) - harmonics , pulse width modulation , matlab , inverter , harmonic , fundamental frequency , control theory (sociology) , component (thermodynamics) , harmonic analysis , mathematics , range (aeronautics) , modulation (music) , algorithm , computer science , electronic engineering , voltage , materials science , physics , engineering , acoustics , control (management) , artificial intelligence , quantum mechanics , composite material , thermodynamics , operating system
Selective harmonic elimination pulse width modulation (SHEPWM) is a fundamental frequency switching angles calculation technique that eliminates the undesired low order harmonics while maintaining the desired fundamental component. A natured-inspired optimization algorithm, grasshopper optimization algorithm (GOA), is applied in SHEPWM to obtain the optimized switching angles. Compared to Newton Raphson (NR), GOA is able to provide wider range of solutions. Optimize switching angles obtained from MATLAB analysis are applied to a 5-phase 7-level modified cascaded multilevel inverter (MCMLI). This paper presents the performance of GOA applied to the MCMLI. The 3rd and 7th harmonics are chosen to be eliminated while the desired fundamental component is maintained.