@inproceedings{630e911784c044fa897f42324f25cf92,
title = "A 6-level flying capacitor multi-level converter for single phase buck-type power factor correction",
abstract = "This work investigates behavior of flying capacitor multi-level (FCML) converters in single phase buck-type power factor correction (PFC) applications. Recent developments in FCML converters using GaN transistors are leveraged to improve power density of a single-phase 240 V RMS ac to direct 48 V dc conversion stage in data center power delivery applications. Here, we experimentally demonstrate this concept by using a digitally controlled 6-level FCML converter. The experimental prototype achieves 163 W/in by box volume excluding heat sink and twice-line frequency energy buffer. A key contribution of this work is experimental exploration of flying capacitor natural balancing of an FCML buck converter in a single-phase ac-dc conversion where the flying capacitor voltages must swing at 120 Hz.",
author = "Enver Candan and Andrew Stillwell and Brooks, {Nathan C.} and Abramson, {Rose A.} and Johan Strydom and Pilawa-Podgurski, {Robert C.N.}",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 ; Conference date: 17-03-2019 Through 21-03-2019",
year = "2019",
month = may,
day = "24",
doi = "10.1109/APEC.2019.8722199",
language = "English (US)",
series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1180--1187",
booktitle = "34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019",
address = "United States",
}