Improving the Dynamic Response of a Flying-Capacitor Three-Level Buck Converter
This study presents a modified flying capacitor three-level buck dc-dc converter with improved dynamic response. First, the limitations in the transient response improvement of the conventional and three-level buck converters are discussed. Then, the three-level buck converter is modified in a way that it would benefit from a faster dynamic during sudden changes in the load. Finally, a controller is proposed that detects load transients and responds appropriately. In order to verify the effectiveness of the modified topology and the proposed transient controller, a simulation model and a hardware prototype are developed. Analytical, simulation, and experimental results show a significant dynamic response improvement.
L. Shi et al., "Improving the Dynamic Response of a Flying-Capacitor Three-Level Buck Converter," IEEE Transactions on Power Electronics, vol. 28, no. 5, pp. 2356-2365, Institute of Electrical and Electronics Engineers (IEEE), May 2013.
The definitive version is available at https://doi.org/10.1109/TPEL.2012.2216291
Electrical and Computer Engineering
Keywords and Phrases
Buck Converters; Flying Capacitor; Hardware Prototype; Load Transients; Simulation Model; Sudden Change; Three-Level; Capacitors; Computer Simulation; Dynamic Response; HVDC Power Transmission; Transient Analysis; DC-DC Converters; Buck DC-DC Converter; Three-Level Buck Converter; Transient Response
International Standard Serial Number (ISSN)
Article - Journal
© 2013 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
01 May 2013