 Mathematical proof of a harmonic elimination procedure for multilevel invertersConcettina Buccella, Maria Gabriella Cimoroni and Carlo Cecati Mathematics and Computers in Simulation (MATCOM), 2021, vol. 184, issue C, 69-81 Abstract: In this paper, a single phase cascaded H-bridge inverter with s variable dc sources (s≥2), l=2s+1 levels has been considered. A mathematical proof is presented to demonstrate that, under a particular choice of the switching angles, which number corresponds to the number of dc sources i.e. s, and of the dc voltages, all harmonics are eliminated from the output voltage waveform, except those of order n=4p⋅s±1, p=1,2,… . With this method, the dc voltage sources vary linearly according to the modulation index m, while the switching angles do not depend on m. The resulting output voltage has low total harmonic distortion, that remains independent on m. Compared to a conventional selective harmonic elimination procedure and to a pulse amplitude method, the proposed procedure reduces distortion in a wide range of modulation index. Keywords: Multilevel inverters (MLI); Selective harmonics elimination (SHE); Pulse amplitude modulation (PAM); Total harmonic distortion (THD); Renewable energy; Electric transportation (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:184:y:2021:i:c:p:69-81 DOI: 10.1016/j.matcom.2020.07.003 Access Statistics for this article Mathematics and Computers in Simulation (MATCOM) is currently edited by Robert Beauwens More articles in Mathematics and Computers in Simulation (MATCOM) from Elsevier |
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