Open AccessHarmonic distortion reduction in modular multilevel converters by novel mixed harmonic injection
Author(s) -
Motwani Jayesh Kumar,
Piegari Luigi
Publication year - 2021
Publication title -
international transactions on electrical energy systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 42
ISSN - 2050-7038
DOI - 10.1002/2050-7038.12871
Subject(s) - total harmonic distortion , harmonics , harmonic , converters , electronic engineering , voltage , reduction (mathematics) , pulse width modulation , modular design , harmonic analysis , modulation (music) , matlab , control theory (sociology) , thd analyzer , computer science , engineering , electrical engineering , physics , mathematics , acoustics , nonlinear distortion , geometry , control (management) , artificial intelligence , operating system , amplifier , cmos
Summary This paper proposes a novel modulation scheme to reduce the harmonic content of voltages and currents caused by modular multilevel converters with embedded battery cell when employed for application in battery energy storage systems in the grid. The reduction in total harmonic distortion (THD) is obtained by injecting selected harmonics in modulating wave for phase disposition sinusoidal pulse width modulation. The main innovation is in the frequency of these injected harmonics, most of which are kept considerably higher than the carrier frequency. The injection has further been improved using closed‐loop control for optimum reduction in the harmonic content of output. The simulations are performed and tested on MATLAB‐SIMULINK and demonstrate a satisfactory reduction in both voltage and current THD without any counter effect.