Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach

The problem of voltage regulation in unknown constant resistive loads is addressed in this paper from the nonlinear control point of view for second-order DC-DC converters. The converters’ topologies analyzed are: (i) buck converter, (ii) boost converter, (iii) buck-boost converter, and (iv) non-inv...

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Autores: Gil-González, Walter, Montoya, Oscar Danilo, Restrepo, Carlos, Hernández, Jesus C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Jaén
Repositorio:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
OAI Identifier:oai:ruja.ujaen.es:10953/6622
Acceso en línea:https://www.mdpi.com/1424-8220/21/19/6367
https://doi.org/10.3390/s21196367
https://hdl.handle.net/10953/6622
Access Level:acceso abierto
Palabra clave:generalized passivity-based controller
second-order DC-DC converters
averaging model in converters
port-controlled hamiltonian systems
621.35
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oai_identifier_str oai:ruja.ujaen.es:10953/6622
network_acronym_str ES
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spelling Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach Gil-González, Walter Montoya, Oscar Danilo Restrepo, Carlos Hernández, Jesus C. generalized passivity-based controller second-order DC-DC converters averaging model in converters port-controlled hamiltonian systems 621.35 The problem of voltage regulation in unknown constant resistive loads is addressed in this paper from the nonlinear control point of view for second-order DC-DC converters. The converters’ topologies analyzed are: (i) buck converter, (ii) boost converter, (iii) buck-boost converter, and (iv) non-inverting buck-boost converter. The averaging modeling method is used to model these converters, representing all these converter topologies with a generalized port-Controlled Hamiltonian (PCH) representation. The PCH representation shows that the second-order DC-DC converters exhibit a general bilinear structure which permits to design of a passivity-based controller with PI actions that ensures the asymptotic stability in the sense of Lyapunov. A linear estimator based on an integral estimator that allows reducing the number of current sensors required in the control implementation stage is used to determine the value of the unknown resistive load. The main advantage of this load estimator is that it ensures exponential convergence to the estimated variable. Numerical simulations and experimental validations show that the PI passivity-based control allows voltage regulation with first-order behavior, while the classical PI controller produces oscillations in the controlled variable, significantly when the load varies. MDPI https://www.mdpi.com/1424-8220/21/19/6367 https://doi.org/10.3390/s21196367 https://hdl.handle.net/10953/6622
title Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach
spellingShingle Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach
Gil-González, Walter
generalized passivity-based controller
second-order DC-DC converters
averaging model in converters
port-controlled hamiltonian systems
621.35
title_short Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach
title_full Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach
title_fullStr Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach
title_full_unstemmed Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach
title_sort Sensorless adaptive voltage control for classical DC-DC converters feeding unknown loads: A generalized PI passivity-based approach
author Gil-González, Walter
author_facet Gil-González, Walter
Montoya, Oscar Danilo
Restrepo, Carlos
Hernández, Jesus C.
author_role author
author2 Montoya, Oscar Danilo
Restrepo, Carlos
Hernández, Jesus C.
author2_role author
author
author
topic generalized passivity-based controller
second-order DC-DC converters
averaging model in converters
port-controlled hamiltonian systems
621.35
topic_facet generalized passivity-based controller
second-order DC-DC converters
averaging model in converters
port-controlled hamiltonian systems
621.35
description The problem of voltage regulation in unknown constant resistive loads is addressed in this paper from the nonlinear control point of view for second-order DC-DC converters. The converters’ topologies analyzed are: (i) buck converter, (ii) boost converter, (iii) buck-boost converter, and (iv) non-inverting buck-boost converter. The averaging modeling method is used to model these converters, representing all these converter topologies with a generalized port-Controlled Hamiltonian (PCH) representation. The PCH representation shows that the second-order DC-DC converters exhibit a general bilinear structure which permits to design of a passivity-based controller with PI actions that ensures the asymptotic stability in the sense of Lyapunov. A linear estimator based on an integral estimator that allows reducing the number of current sensors required in the control implementation stage is used to determine the value of the unknown resistive load. The main advantage of this load estimator is that it ensures exponential convergence to the estimated variable. Numerical simulations and experimental validations show that the PI passivity-based control allows voltage regulation with first-order behavior, while the classical PI controller produces oscillations in the controlled variable, significantly when the load varies.
publishDate 2021
format article
status_str publishedVersion
url https://www.mdpi.com/1424-8220/21/19/6367
https://doi.org/10.3390/s21196367
https://hdl.handle.net/10953/6622
eu_rights_str_mv openAccess
publisher MDPI
institution Universidad de Jaén
collection RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
reponame_str RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
instname_str Universidad de Jaén
_version_ 1878442867426328576
publishDateSort 2021
author_browse Gil-González, Walter
Hernández, Jesus C.
Montoya, Oscar Danilo
Restrepo, Carlos
publisherStr MDPI
score 6,924472

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