A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC Converter
DC grid interfaces for supercapacitors (SCs) are expected to operate with a wide range of input voltages with fast dynamics. The class-C DC-DC converter is commonly used in this application because of its simplicity. However, it does not work if the output voltage (<i>V</i><sub>2&l...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/23/7921 |
| _version_ | 1797507877338873856 |
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| author | Gabriel R. Broday Gilney Damm William Pasillas-Lépine Luiz A. C. Lopes |
| author_facet | Gabriel R. Broday Gilney Damm William Pasillas-Lépine Luiz A. C. Lopes |
| author_sort | Gabriel R. Broday |
| collection | DOAJ |
| description | DC grid interfaces for supercapacitors (SCs) are expected to operate with a wide range of input voltages with fast dynamics. The class-C DC-DC converter is commonly used in this application because of its simplicity. However, it does not work if the output voltage (<i>V</i><sub>2</sub>) becomes smaller than the input voltage (<i>V</i><sub>1</sub>). The non-isolated bi-directional Buck–Boost DC-DC converter does not have this limitation. Its two half-bridges provide a means for controlling the power flow operating in the conventional dual-state mode, as well as multi-state, tri, and quad modes. These can be used for mitigating issues such as the Right Half Plane (RHP) zero that has a negative impact on the dynamic response of the system. Multi-state operation typically requires multi-variable control, which is not easy to realize with conventional PI-type controllers. This paper proposes a unified controller for multi-state operation. It employs a carrier-based modulation scheme with three modulation signals that allows the converter to operate in all four possible states and eight different modes of operation. A mathematical model is developed for devising a multi-variable control scheme using feedback linearization. This allows the design of control loops with simple PI controllers that can be used for all multi-state modes under a wide range of operating conditions with the same performance. The proposed scheme is verified by means of simulations. |
| first_indexed | 2024-03-10T04:54:42Z |
| format | Article |
| id | doaj.art-cf15ee2a15ec4e0ea03e7ad85f879e10 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:54:42Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-cf15ee2a15ec4e0ea03e7ad85f879e102023-11-23T02:19:50ZengMDPI AGEnergies1996-10732021-11-011423792110.3390/en14237921A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC ConverterGabriel R. Broday0Gilney Damm1William Pasillas-Lépine2Luiz A. C. Lopes3Department of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G 1M8, CanadaDepartment of Components and Systems (COSYS), University Gustave Eiffel, 93162 Paris, FranceLaboratory of Signals and Systems (L2S), University of Paris-Saclay, 91190 Paris, FranceDepartment of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G 1M8, CanadaDC grid interfaces for supercapacitors (SCs) are expected to operate with a wide range of input voltages with fast dynamics. The class-C DC-DC converter is commonly used in this application because of its simplicity. However, it does not work if the output voltage (<i>V</i><sub>2</sub>) becomes smaller than the input voltage (<i>V</i><sub>1</sub>). The non-isolated bi-directional Buck–Boost DC-DC converter does not have this limitation. Its two half-bridges provide a means for controlling the power flow operating in the conventional dual-state mode, as well as multi-state, tri, and quad modes. These can be used for mitigating issues such as the Right Half Plane (RHP) zero that has a negative impact on the dynamic response of the system. Multi-state operation typically requires multi-variable control, which is not easy to realize with conventional PI-type controllers. This paper proposes a unified controller for multi-state operation. It employs a carrier-based modulation scheme with three modulation signals that allows the converter to operate in all four possible states and eight different modes of operation. A mathematical model is developed for devising a multi-variable control scheme using feedback linearization. This allows the design of control loops with simple PI controllers that can be used for all multi-state modes under a wide range of operating conditions with the same performance. The proposed scheme is verified by means of simulations.https://www.mdpi.com/1996-1073/14/23/7921bidirectional DC-DC converterDC microgridsenergy storage systemsfeedback linearizationmulti-variable control |
| spellingShingle | Gabriel R. Broday Gilney Damm William Pasillas-Lépine Luiz A. C. Lopes A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC Converter Energies bidirectional DC-DC converter DC microgrids energy storage systems feedback linearization multi-variable control |
| title | A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC Converter |
| title_full | A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC Converter |
| title_fullStr | A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC Converter |
| title_full_unstemmed | A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC Converter |
| title_short | A Unified Controller for Multi-State Operation of the Bi-Directional Buck–Boost DC-DC Converter |
| title_sort | unified controller for multi state operation of the bi directional buck boost dc dc converter |
| topic | bidirectional DC-DC converter DC microgrids energy storage systems feedback linearization multi-variable control |
| url | https://www.mdpi.com/1996-1073/14/23/7921 |
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