Tarraso A. , Candela J.I. , LAI, NGOC BAO, BALTAS, NICHOLAS-GREGORY, RODRÍGUEZ CORTÉS, PEDRO
No
ECCE - IEEE Energy Convers. Congr. Expo.
Capítulo de un Libro
Científica
01/01/2020
2-s2.0-85097185947
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.
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