Open AccessEffects of phase leg reactor, submodule capacitor, number of submodules and switching frequency on harmonics in modular multilevel converters
Author(s) -
Bissal Ara,
Ali Waqas,
Colak Ilknur
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8079
Subject(s) - capacitance , total harmonic distortion , capacitor , converters , modular design , harmonics , inductance , controllability , harmonic , computer science , control theory (sociology) , parametric statistics , inductor , voltage , electronic engineering , topology (electrical circuits) , mathematics , electrical engineering , engineering , physics , acoustics , control (management) , statistics , electrode , quantum mechanics , artificial intelligence , operating system
The modular multilevel converter (M2C) will play an important role in the future especially for high‐voltage and high‐power applications where controllability is a key factor. Although a lot of research has been carried out on this topic, little has been done to understand how different system parameters, like the arm reactor, the submodule capacitor, number of submodules and switching frequency, influence the performance of the converter. In this study, a robust model of a M2C was presented and used to perform an extensive parametric sweep versus the variables mentioned above. It has been shown that by implementing an anti‐windup scheme, the model remains stable over a large range of parameters. It has also been shown that an optimum knee point exists in all total harmonic distortion (THD) graphs versus inductance, capacitance, number of submodules and switching frequency. Finally, it has been shown that to decrease THD, the number of submodules can be increased while making sure the effective arm capacitance is maintained constant.