Publication: On-Time Mismatch Based System Identific...
Master data
Title: | On-Time Mismatch Based System Identification Technique for Buck Converters |
Subtitle: | |
Abstract: | This work introduces a fast and low-complexity natural frequency estimation concept for power converters, enabling their adaptive control. Neither a high resolution analog to digital converter nor complex arithmetic operations, such as multiplications, are required by the proposed approach. Instead, the mismatch between the on-time of the control signal and the effective on-time at the switching node, occurring under light load conditions, is exploited. This mismatch is caused by the parasitic drain-source capacitance and the parasitic body diode oft he power MOSFETs. It is not necessary that the value of the parasitic capacitance is known nor is it required to stay constant, e.g., over temperature. Due to its simplicity, the proposed method is well suited for practical on-chip realizations. The introduced concept is experimentally verified on the example of a buck converter with different output filter sets. A digital controller is adaptively tuned based on the estimated natural frequency, resulting in an improved dynamic performance. For the presented converter, the magnitude of the output voltage transient in response to a load change was reduced by 30%. |
Keywords: |
Publication type: | Article in journal (Authorship) |
Publication date: | 24.09.2019 (Print) |
Published by: |
IEEE Transactions on Industrial Electronics
IEEE Transactions on Industrial Electronics
(
IEEE;
)
to publication |
Title of the series: | - |
Volume number: | - |
Issue: | - |
First publication: | Yes |
Version: | - |
Page: | pp. 1 - 1 |
Versionen
Keine Version vorhanden |
Publication date: | |
ISBN (e-book): | - |
eISSN: | - |
DOI: | http://dx.doi.org/10.1109/TIE.2019.2939982 |
Homepage: | - |
Open access |
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Publication date: | 24.09.2019 |
ISBN: | - |
ISSN: | 0278-0046 |
Homepage: | https://ieeexplore.ieee.org/document/8847633 |
Authors
Harald Gietler (internal) |
Marc Kanzian (external) |
Christoph Unterrieder (external) |
Andreas Berger (external) |
Robert Priewasser (internal) |
Mario Huemer (external) |
Hubert Zangl (internal) |
Assignment
Organisation | Address | ||||
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Fakultät für Technische Wissenschaften
Institut für Intelligente Systemtechnologien
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AT - 9020 Klagenfurt am Wörthersee |
Categorisation
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Citation index |
Information about the citation index: Master Journal List
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Peer reviewed |
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Classification raster of the assigned organisational units:
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Cooperations
Organisation | Address | ||
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Infineon Technologies Austria AG
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AT - 9500 Villach |
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Johannes Kepler Universität Linz
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AT - 4040 Linz |
Research activities
Projects: | No related projects |
Publications: | No related publications |
Events: | No related events |
Lectures: | No related lectures |