UDE-based robust nonlinear control of the buck-boost power converter

The buck-boost converter is a non-minimum phase system that presents major challenges in the design of stabilising controllers. A robust nonlinear controller based on the uncertainty and disturbance estimator (UDE) scheme is developed to tightly regulate the output voltage of the converter, subject...

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Bibliographic Details
Published inInternational journal of electronics Vol. 110; no. 12; pp. 2201 - 2213
Main Author Oucheriah, Said
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 02.12.2023
Taylor & Francis LLC
Subjects
Buck converters
Buck-boost converter
Controllers
Electric potential
Load resistance
Nonlinear control
Power converters
Proportional integral
Robust control
robust nonlinear control
Uncertainty
uncertainty and disturbance estimator (UDE)
Voltage
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Summary:The buck-boost converter is a non-minimum phase system that presents major challenges in the design of stabilising controllers. A robust nonlinear controller based on the uncertainty and disturbance estimator (UDE) scheme is developed to tightly regulate the output voltage of the converter, subject to unknown input voltage, load resistance, parasitics and parametric uncertainties. A simple procedure is developed that systematically select the controller gains to achieve a satisfactory output response. Using simulation, the effectiveness of the proposed controller is validated and compared to a recent robust nonlinear proportional-integral (PI)-type controller.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:0020-7217
1362-3060
DOI:10.1080/00207217.2022.2132540