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Control of limit cycle oscillations in a multiple-sampled digitally controlled buck converter

Author
Bradley, M.; Alarcon, E.; Feely, O.
Type of activity
Journal article
Journal
International journal of circuit theory and applications
Date of publication
2015-06-01
Volume
43
Number
6
First page
691
Last page
708
DOI
https://doi.org/10.1002/cta.1963 Open in new window
Project funding
Circuitos de gestión de energia adaptativos y miniaturizados para recolectores de energía en redes de sensores inalámbricos (WSN)
URL
http://onlinelibrary.wiley.com/doi/10.1002/cta.1963/abstract Open in new window
Abstract
Digital control in switching power converters has been proposed and researched in recent years. However, one of the problems which arise in these circuits is that of quantization-induced limit cycle oscillations, which are generally considered to be undesirable. In this work, we investigate the addition of new control terms in the feedback loop of the system, in order to actively prevent these limit cycles from occurring. Firstly, the addition of a sinusoidal signal is considered, and then a mor...
Keywords
Chaos, Control, DC-DC, DC-DC Converters, Feedback, Limit cycle, Mode, Nonlinear dynamics, Quantization, Sigma-Delta-Modulators
Group of research
EPIC - Energy Processing and Integrated Circuits
PERC-UPC - Power Electronics Research Centre

Participants