Research on dynamic voltage restorer control based on αβ-Frame moving average filter phase-locked loop in non-ideal power network conditions

The Dynamic Voltage Restorer (DVR) can swiftly and precisely synchronize with the grid’s phase and accurately determine the reference voltage of the DVR in the presence of three-phase unbalanced voltage sag, harmonic distortion, and DC offset in the grid. A stationary reference frame moving average filter phase-locked loop ( αβ MAF-PLL) can be utilized to efficiently and precisely synchronize the reference voltage of the DVR under less-than-ideal grid conditions. Simulation models of the dynamic voltage restorer under different power network scenarios are created in Matlab/Simulink, with the simulation results confirming the speed and effectiveness of the DVR based on αβ MAF-PLL.