| Title |
Virtual Admittance PLL Structure for Grid-forming Power Converters in Microgrids |
| Authors |
Tarraso, Andres , Ignacio Candela, Jose , LAI, NGOC BAO, BALTAS, NICHOLAS-GREGORY, RODRÍGUEZ CORTÉS, PEDRO |
| External publication |
No |
| Means |
Ieee Energy Conversion Congress And Exposition |
| Scope |
Proceedings Paper |
| Nature |
Científica |
| Publication date |
01/01/2020 |
| ISI |
000645593605058 |
| Abstract |
Synchronization plays a fundamental role in connecting power electronic converters with the grid. Conventionally, the synchronous reference frame phase-locked loop (SRF-PLL) has been widely used to estimate the grid phase angle. Though SRF-PLL is effective under normal grid voltage conditions, its performance degrades drastically under weak grid conditions. This paper presents a control strategy for current controller of grid-connected power converters that contributes in the reduction of the negative effects of SRF-PLL during grid disturbances. The main control concept is based on virtual admittance. This approach is capable of operating effectively power converters when connected to weak grids and permit grid-forming operation. Simulation and experimental results are provided to validate the proposed controller. |
| Keywords |
Microgrid; synchronization system; synchronous reference frame; power converter control |
| Universidad Loyola members |
|
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