Comparison of DSOGI-Based PLL for Phase Estimation in Three-Phase Weak Grids

• Type: Article in International Scientific Journal
• Date: 2021-07-08

Authors

Jorge Pinto (Author) FEUP; Adriano Carvalho (Author) FEUP; Agostinho Rocha (Author) FEUP; Armando Araújo (Author) FEUP

Other information

DOI: 10.3390/electricity2030015

Abstract (EN): The paper presents a summary of different double second-order generalized integrator (DSOGI)-based phase-locked loop (PLL) algorithms for synchronization with three-phase weak grids. The different methods are compared through simulation under a variety of grid conditions, such as unbalanced phase voltages, high low-order harmonics distortion, frequency steps, phase jumps, and voltage sags. Following the simulation results, the three methods that have shown the overall best results are compared through an experimental setup for further results validation under operation with a voltage-source converter. Based on the obtained results, a benchmark table is presented that allows ranking the performance of the tested methods for different expected grid conditions.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 27