Synchronizing a synchronverter to an unbalanced power grid using sequence component decomposition
The synchronverter is a device used in some microgrids to perform self-synchronization and represent the behavior of a synchronous machine. However, the original control has been proposed for balanced net- works, which is not present in all distribution systems. In unbalanced networks, the negative...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | Colombia |
| Institución: | Universidad Autónoma de Occidente |
| Repositorio: | RED: Repositorio Educativo Digital UAO |
| Idioma: | inglés |
| OAI Identifier: | oai:red.uao.edu.co:10614/14742 |
| Acceso en línea: | https://hdl.handle.net/10614/14742 https://red.uao.edu.co/ |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería eléctrica Electric engineering Distributed generation Droop control Positive sequence Symmetrical components Synchronverter Virtual synchronous generator |
| Sumario: | The synchronverter is a device used in some microgrids to perform self-synchronization and represent the behavior of a synchronous machine. However, the original control has been proposed for balanced net- works, which is not present in all distribution systems. In unbalanced networks, the negative sequence may appear and generate a double frequency oscillation when delivering power or a non-symmetrical current from the inverter; thus, it must compensate unbalanced load. Therefore, this article shows that a synchronverter can be synchronized using the positive sequence even when there are voltage unbalances. The proposed strategy was simulated in the Simulink-Matlab© software, considering an unbalanced power grid with a single inverter and a load. The results confirm the effectiveness of this strategy, as the synchronverter can follow the grid frequency and the wave shape amplitude after starting the frequency droop control |
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