@inproceedings{c3f9552f72724169b42ef1bd33260fc4,
title = "Principles and dynamics of natural arm capacitor voltage balancing of a direct modulated modular multilevel converter",
abstract = "Natural capacitor voltage balancing of six arms of a direct modulated Modular Multilevel Converter (MMC) has been observed by several articles both by experiments and simulations. However, its principles have not been revealed clearly and its dynamics have not been analyzed analytically. In this paper it's shown that a DC component and a line frequency circulating current would be induced inside the converter inherently in case of arm capacitor voltage unbalance and the induced circulating current would transfer energy among six arms to balance arm capacitor voltage naturally without any closed-loop control. And the dynamics of natural arm capacitor voltage balancing have been analyzed mathematically and verified by both computer simulations and experiments.",
keywords = "direct modulation, HVDC, indirect modulation, modular multilevel converter, natural balancing",
author = "Shenghui Cui and Jung, {Jae Jung} and Younggi Lee and Sul, {Seung Ki}",
note = "Publisher Copyright: {\textcopyright} 2015 Korean Institute of Power Electronics.; 9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia ; Conference date: 01-06-2015 Through 05-06-2015",
year = "2015",
month = jul,
day = "27",
doi = "10.1109/ICPE.2015.7167796",
language = "English",
series = "9th International Conference on Power Electronics - ECCE Asia: {"}Green World with Power Electronics{"}, ICPE 2015-ECCE Asia",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "259--267",
booktitle = "9th International Conference on Power Electronics - ECCE Asia",
address = "United States",
}