Autotuning of DC-DC Buck Converters using the Modified Relay-Feedback Test

Ahmed Shehada, A. R. Beig, Igor Boiko

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents an autotuning technique for the class of digitally-controlled PID voltage-mode dc-dc buck converters, based on the modified relay feedback test (MRFT). The autotuning is consists of short and simple test and tuning stages, where the tuning is done using tuning rules that are derived offline, once only, for a given class of plant dynamics. A major advantage of the presented autotuning is that it allows for the specification of the gain or phase margin. This paper includes a review of selected autotuning techniques for dc-dc buck converters and a background on autotuning using the MRFT. An explanation of how the test stage of the MRFT tuning method is adapted to switching dc-dc power converters is provided, as well as a detailed procedure for the derivation of tuning rules that provide near-optimal dynamic performance for the class of dc-dc buck converters. Experimental results are provided which show good dynamic performance of the autotuned controller as compared to a controller that is optimized using full knowledge of the parameters of the test converter.

Original languageBritish English
Title of host publication2022 16th International Workshop on Variable Structure Systems, VSS 2022
PublisherIEEE Computer Society
Pages123-128
Number of pages6
ISBN (Electronic)9781665463591
DOIs
StatePublished - 2022
Event16th International Workshop on Variable Structure Systems, VSS 2022 - Rio de Janeiro, Brazil
Duration: 11 Sep 202214 Sep 2022

Publication series

NameProceedings of IEEE International Workshop on Variable Structure Systems
Volume2022-September
ISSN (Print)2165-4816
ISSN (Electronic)2165-4824

Conference

Conference16th International Workshop on Variable Structure Systems, VSS 2022
Country/TerritoryBrazil
CityRio de Janeiro
Period11/09/2214/09/22

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