Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input Observer
DC Microgrids are rapidly developing, driven by the increasing integration of renewable sources and dynamic loads. Their growing adoption in critical applications raises the need for operational safety and reliability, particularly under fault conditions. This paper presents a sensor fault-tolerant...
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2025-01-01
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| Online Access: | https://ieeexplore.ieee.org/document/11007104/ |
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| author | Mohammed Said Ouahabi Abdelhafid Benyounes Said Barkat Syphax Ihammouchen Toufik Rekioua Abdelaziz Rabehi El-Sayed M. El-Kenawy Amal H. Alharbi |
| author_facet | Mohammed Said Ouahabi Abdelhafid Benyounes Said Barkat Syphax Ihammouchen Toufik Rekioua Abdelaziz Rabehi El-Sayed M. El-Kenawy Amal H. Alharbi |
| author_sort | Mohammed Said Ouahabi |
| collection | DOAJ |
| description | DC Microgrids are rapidly developing, driven by the increasing integration of renewable sources and dynamic loads. Their growing adoption in critical applications raises the need for operational safety and reliability, particularly under fault conditions. This paper presents a sensor fault-tolerant control (FTC) for DC-DC power converters in DC Microgrids designed to maintain resilient and reliable operation. The proposed FTC leverages a single Switching Unknown Input Observer (SW-UIO) at the bottom control level to estimate arbitrary sensor faults with a high accuracy (0.3% fault estimation error), allowing a real-time identification and precise control reconfiguration to accommodate sensor faults with minimal computational burden. The approach is validated under diverse conditions, including time-varying loads, complete sensor failure, noise abnormality, and simultaneous faults/failure, achieving a consistent fault accommodation of <inline-formula> <tex-math notation="LaTeX">$1\mu $ </tex-math></inline-formula>s from fault occurrence to compensation. Real-time simulation has been performed in the OPAL-RT environment to assess the efficacy and superiority of the proposed sensor fault tolerant strategy in comparison to reference FTC strategies. |
| format | Article |
| id | doaj-art-29f56c32f2bc47239919b8cc45a56ba6 |
| institution | OA Journals |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
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| series | IEEE Access |
| spelling | doaj-art-29f56c32f2bc47239919b8cc45a56ba62025-08-20T02:32:10ZengIEEEIEEE Access2169-35362025-01-0113958379585010.1109/ACCESS.2025.357165011007104Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input ObserverMohammed Said Ouahabi0https://orcid.org/0000-0001-8914-1720Abdelhafid Benyounes1https://orcid.org/0000-0003-2808-1407Said Barkat2https://orcid.org/0000-0002-6220-7387Syphax Ihammouchen3https://orcid.org/0009-0005-5990-2644Toufik Rekioua4https://orcid.org/0000-0002-6258-5708Abdelaziz Rabehi5https://orcid.org/0000-0001-8684-4754El-Sayed M. El-Kenawy6https://orcid.org/0000-0002-9221-7658Amal H. Alharbi7https://orcid.org/0000-0002-7332-4941Electrical Engineering Laboratory, Faculty of Technology, University of M’sila, M’sila, AlgeriaElectrical Engineering Laboratory, Faculty of Technology, University of M’sila, M’sila, AlgeriaElectrical Engineering Laboratory, Faculty of Technology, University of M’sila, M’sila, AlgeriaLaboratoire de Technologie Industrielle et de l’Information, University of Béjaïa, Béjaïa, AlgeriaLaboratoire de Technologie Industrielle et de l’Information, University of Béjaïa, Béjaïa, AlgeriaLaboratory of Telecommunication and Smart Systems (LTSS), Faculty of Science and Technology, University of Djelfa, Djelfa, AlgeriaSchool of ICT, Faculty of Engineering, Design and Information and Communications Technology (EDICT), Bahrain Polytechnic, Isa Town, BahrainDepartment of Computer Sciences, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, Saudi ArabiaDC Microgrids are rapidly developing, driven by the increasing integration of renewable sources and dynamic loads. Their growing adoption in critical applications raises the need for operational safety and reliability, particularly under fault conditions. This paper presents a sensor fault-tolerant control (FTC) for DC-DC power converters in DC Microgrids designed to maintain resilient and reliable operation. The proposed FTC leverages a single Switching Unknown Input Observer (SW-UIO) at the bottom control level to estimate arbitrary sensor faults with a high accuracy (0.3% fault estimation error), allowing a real-time identification and precise control reconfiguration to accommodate sensor faults with minimal computational burden. The approach is validated under diverse conditions, including time-varying loads, complete sensor failure, noise abnormality, and simultaneous faults/failure, achieving a consistent fault accommodation of <inline-formula> <tex-math notation="LaTeX">$1\mu $ </tex-math></inline-formula>s from fault occurrence to compensation. Real-time simulation has been performed in the OPAL-RT environment to assess the efficacy and superiority of the proposed sensor fault tolerant strategy in comparison to reference FTC strategies.https://ieeexplore.ieee.org/document/11007104/Dc microgridsfault-tolerant controlsensor faultsensor failureunknown input observer |
| spellingShingle | Mohammed Said Ouahabi Abdelhafid Benyounes Said Barkat Syphax Ihammouchen Toufik Rekioua Abdelaziz Rabehi El-Sayed M. El-Kenawy Amal H. Alharbi Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input Observer IEEE Access Dc microgrids fault-tolerant control sensor fault sensor failure unknown input observer |
| title | Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input Observer |
| title_full | Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input Observer |
| title_fullStr | Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input Observer |
| title_full_unstemmed | Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input Observer |
| title_short | Real-Time Sensor Fault Tolerant Control of DC-DC Converters in DC Microgrids Using a Switching Unknown Input Observer |
| title_sort | real time sensor fault tolerant control of dc dc converters in dc microgrids using a switching unknown input observer |
| topic | Dc microgrids fault-tolerant control sensor fault sensor failure unknown input observer |
| url | https://ieeexplore.ieee.org/document/11007104/ |
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