| Title | Virtual Admittance PLL Structure for Grid-forming Power Converters in Microgrids |
|---|---|
| Authors | Tarraso A. , Candela J.I. , LAI, NGOC BAO, BALTAS, NICHOLAS-GREGORY, RODRÍGUEZ CORTÉS, PEDRO |
| External publication | No |
| Means | ECCE - IEEE Energy Convers. Congr. Expo. |
| Scope | Capítulo de un Libro |
| Nature | Científica |
| Web | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097185947&doi=10.1109%2fECCE44975.2020.9235629&partnerID=40&md5=2b171d062c5a3bda26983e38e38b4add |
| Publication date | 01/01/2020 |
| Scopus Id | 2-s2.0-85097185947 |
| DOI | 10.1109/ECCE44975.2020.9235629 |
| 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. © 2020 IEEE. |
| Keywords | Controllers; Electric power transmission networks; Energy conversion; Microgrids; Phase locked loops; Power converters; Control concept; Control strategies; Current controller; Grid disturbance; Grid-connected; Power electronic converters; Synchronous reference frame; Virtual admittances; Electric power system control |
| Universidad Loyola members |