@inproceedings{fbafed64aa344aefa205a3f18499eebf,
title = "Balancing Limits of Flying Capacitor Voltages in Coupled Inductor FCML Converters",
abstract = "Ensuring that the flying capacitor voltages are balanced is critical to the operation of flying capacitor multilevel (FCML) converters. This paper systematically explores robust voltage balancing of FCML converters using coupled inductors. Coupled inductors are shown to balance FCML converters with any number of levels or even number of phases, with some singularities. Balancing is improved with an even number of phases, levels, and higher coupling coefficients. The two-phase, three-level FCML converter yields the strongest and most reliable benefit from coupled inductor balancing. Coupled inductors with a modest coupling ratio can also improve balancing. A piece-wise linear model of the converter is developed to show that coupled inductor balancing is effective in intrinsically unbalanced con-verters. The theoretical predictions are verified using simulations and experimental results.",
keywords = "charge balancing, coupled in-ductors, flying capacitor multilevel converter, natural balancing, piece-wise linear model, transient response, voltage balancing",
author = "Zhou, {Daniel H.} and Janko Celikovic and Youssef Elasser and Dragan Maksimovic and Minjie Chen",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 ; Conference date: 20-06-2022 Through 23-06-2022",
year = "2022",
doi = "10.1109/COMPEL53829.2022.9830009",
language = "English (US)",
series = "Proceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022",
address = "United States",
}