Konstantopoulos, G. orcid.org/0000-0003-3339-6921 and Zhong, Q. (2016) Nonlinear control of dc/dc power converters with inherent current and power limitation. In: Proceedings of the 2016 24th Mediterranean Conference on Control and Automation (MED). 24th Mediterranean Conference on Control and Automation, 21-24 Jun 2016, Athens, Greece. IEEE , pp. 949-954. ISBN 978-1-4673-8345-5
Abstract
A nonlinear controller with an inherent current-limiting capability is presented in this paper for different types of dc/dc power converters (boost, buck-boost). The proposed controller is based on the idea of applying a dynamic virtual resistance in series with the inductor of the converter, which varies according to a nonlinear dynamical system. It is shown that the proposed approach acts independently from the converter parameters (inductance, capacitance) or the load and has a generic structure that can be used to achieve different regulation scenarios, e.g. voltage, current or power regulation. Based on the nonlinear model of the boost and the buck-boost converter, it is analytically proven that the inductor current remains always bounded below a given maximum value using input-to-state stability theory under a suitable choice of the controller parameters. Hence, the proposed control strategy offers an inherent protection property since the power of the converter is limited below a given value during transients or unrealistic power demands. Simulation results for both types of dc/dc converters are presented to verify the desired controller performance.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IEEE. This is an author produced version of a paper subsequently published in 2016 24th Mediterranean Conference on Control and Automation (MED). Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/J01558X/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 16 Aug 2016 13:49 |
Last Modified: | 19 Dec 2022 13:33 |
Published Version: | http://dx.doi.org/10.1109/MED.2016.7535991 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/MED.2016.7535991 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99596 |