Synchronization Techniques Effect on Series Power Electronic Converter

In recent years Power Quality (PQ) has been crucial in modern power systems, especially with the increasing integration of Renewable Energy Sources (RESs) and growing demand for electricity. Series Power Electronic Converters (SPECs) are one of the promising solutions for enhancing voltage quality at the Point of Common Coupling (PCC) in electrical distribution systems however, the performance of these devices is highly dependent on the accuracy of the synchronization techniques used. This paper is dedicated to evaluating the dynamic response of this device by using different synchronization techniques. Zero Crossing Detection (ZCD), Second-Order Generalized Integrator Single Phase Locked Loop (SOGI-SPLL), and All-Pass Filter Single Phase Locked Loop (APF-SPLL) are the techniques considered here. A comprehensive SPEC model is simulated in MATLAB/Simulink to check the system's dynamical response, accuracy, and voltage PQ during transient conditions. These comparisons and findings highlight the importance of selecting appropriate synchronization techniques to optimize the performance of these systems in modern AC smart grids.