Login (DCU Staff Only)
Login (DCU Staff Only)

DORAS | DCU Research Repository

Explore open access research and scholarly works from DCU

Advanced Search

Design of robust digitally controlled DC-DC converters in the presence of strong Interference

Hayes, Brendan orcid logoORCID: 0000-0003-3907-1482, Condon, Marissa and Giaouris, Damian orcid logoORCID: 0000-0003-1398-8719 (2017) Design of robust digitally controlled DC-DC converters in the presence of strong Interference. International Journal of Circuit Theory and Applications, 45 (11). pp. 1742-1759. ISSN 0098-9886

Abstract
One of the main advantages of digital control is the ability to design more sophisticated control strategies to enable high performance dc-dc converters. One such example is a buck converter operating with a digital state-feedback controller. Previous works characterise the nonlinear dynamics of such systems under ideal operating conditions. However, in practical applications, these conditions cannot be guaranteed. The focus of this work is on the behaviour of such systems when they operate in the presence of strong interference signals. Previous works on the effect of noise have shown that intermittent operation is possible when the frequency of the noise signal is close to the switching frequency. Intermittent operation can be characterised by long periods of stable operation interspersed with periods of unstable or chaotic operation which greatly downgrade the efficiency and performance of the converter and reduce its lifetime as for example increase the current ripple or add extra AC components at its output. Typically, such behaviour is avoided by modifying the circuit parameters. However, little or no work exists on developing design guidelines in order to effect its elimination. This is the focus of this research, that is, by utilising Filippov’s theory on discontinuous differential equations, to set out a design procedure that can be applied to any dc-dc converter, to tune its controller in order to eliminate intermittent operation. As a case study, the digitally controlled buck converter with a state-feedback control law is selected.
Metadata
Item Type:Article (Published)
Refereed:No
Uncontrolled Keywords:bifurcation; chaos; intermittent operation; dc–dc converters; controller design; noise
Subjects:Engineering > Control theory
Engineering > Electronics
Engineering > Electronic engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Research Initiatives and Centres > Research Institute for Networks and Communications Engineering (RINCE)
Publisher:John Wiley & Sons
Official URL:https://doi.org/10.1002/cta.2351
Copyright Information:© 2017 John Wiley & Sons
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Dublin City University - Daniel O'Hare Research Scholarship Scheme
ID Code:23001
Deposited On:21 Feb 2019 12:04 by Brendan Hayes . Last Modified 21 Feb 2019 12:04
Documents

Full text available as:

[thumbnail of CTA_Paper_2.pdf]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB
Downloads

Downloads

Downloads per month over past year

Archive Staff Only: edit this record