Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies
Photovoltaic (PV) microinverters have grown rapidly in the small-scale PV market, where typical two-stage converters are used to connect one PV module to the single-phase AC grid. This configuration achieves better performance in terms of energy yield compared with other PV configurations. However,...
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MDPI AG
2022-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/12/5952 |
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| author | Diana Lopez-Caiza Hugues Renaudineau Nicolas Muller Freddy Flores-Bahamonde Samir Kouro Jose Rodriguez |
| author_facet | Diana Lopez-Caiza Hugues Renaudineau Nicolas Muller Freddy Flores-Bahamonde Samir Kouro Jose Rodriguez |
| author_sort | Diana Lopez-Caiza |
| collection | DOAJ |
| description | Photovoltaic (PV) microinverters have grown rapidly in the small-scale PV market, where typical two-stage converters are used to connect one PV module to the single-phase AC grid. This configuration achieves better performance in terms of energy yield compared with other PV configurations. However, the conversion efficiency of a two-stage system is the main drawback, especially when a high-voltage gain effort is required. In this context, single-stage microinverter topologies have been recently proposed since only one power conversion stage is required to extract the maximum power of the PV module and inject the AC power to the grid. This single-stage configuration allows considerable improvement of the overall efficiency of microinverters by reducing the number of elements in the system. However, the main challenge of these topologies is their control, since all variables of the converter are composed by the AC waveform with DC-bias. In this paper, four control strategies are analyzed for the mainstream single-stage topology, which is the dual-boost inverter (DBI). Classical linear control and three non-linear strategies, namely finite control set–model predictive control, flatness-based control, and sliding mode control, are detailed. The main contribution of this work is a complete comparison of the control strategies, to give insights into the most suitable control strategy for the DBI in PV microinverter application. |
| first_indexed | 2024-03-10T00:31:28Z |
| format | Article |
| id | doaj.art-5a41b68768974313adb407ea7e8b5d75 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:31:28Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-5a41b68768974313adb407ea7e8b5d752023-11-23T15:25:12ZengMDPI AGApplied Sciences2076-34172022-06-011212595210.3390/app12125952Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control StrategiesDiana Lopez-Caiza0Hugues Renaudineau1Nicolas Muller2Freddy Flores-Bahamonde3Samir Kouro4Jose Rodriguez5Department of Engineering Sciences, Universidad Andres Bello, Santiago 7500971, ChileElectronics Engineering Department, Universidad Técnica Federico Santa María, Valparaíso 2390123, ChileFaculty of Engineering Sciences, Universidad Austral de Chile, Valdivia 5110566, ChileDepartment of Engineering Sciences, Universidad Andres Bello, Santiago 7500971, ChileElectronics Engineering Department, Universidad Técnica Federico Santa María, Valparaíso 2390123, ChileFaculty of Engineering, Universidad San Sebastian, Santiago 8420524, ChilePhotovoltaic (PV) microinverters have grown rapidly in the small-scale PV market, where typical two-stage converters are used to connect one PV module to the single-phase AC grid. This configuration achieves better performance in terms of energy yield compared with other PV configurations. However, the conversion efficiency of a two-stage system is the main drawback, especially when a high-voltage gain effort is required. In this context, single-stage microinverter topologies have been recently proposed since only one power conversion stage is required to extract the maximum power of the PV module and inject the AC power to the grid. This single-stage configuration allows considerable improvement of the overall efficiency of microinverters by reducing the number of elements in the system. However, the main challenge of these topologies is their control, since all variables of the converter are composed by the AC waveform with DC-bias. In this paper, four control strategies are analyzed for the mainstream single-stage topology, which is the dual-boost inverter (DBI). Classical linear control and three non-linear strategies, namely finite control set–model predictive control, flatness-based control, and sliding mode control, are detailed. The main contribution of this work is a complete comparison of the control strategies, to give insights into the most suitable control strategy for the DBI in PV microinverter application.https://www.mdpi.com/2076-3417/12/12/5952photovoltaic energysingle-stage topologiesPV microinverterFCS–model predictive controlflatness-based controlsliding mode control |
| spellingShingle | Diana Lopez-Caiza Hugues Renaudineau Nicolas Muller Freddy Flores-Bahamonde Samir Kouro Jose Rodriguez Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies Applied Sciences photovoltaic energy single-stage topologies PV microinverter FCS–model predictive control flatness-based control sliding mode control |
| title | Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies |
| title_full | Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies |
| title_fullStr | Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies |
| title_full_unstemmed | Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies |
| title_short | Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies |
| title_sort | dual boost inverter for pv microinverter application an assessment of control strategies |
| topic | photovoltaic energy single-stage topologies PV microinverter FCS–model predictive control flatness-based control sliding mode control |
| url | https://www.mdpi.com/2076-3417/12/12/5952 |
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