Advanced integration of a switched-coupled-inductor Ćuk converter for optimized grid-connected PV application

Advanced converters offer superior performance over traditional models by increasing efficiency and minimizing energy losses. However, there is a significant gap in integrating these advanced converters into grid-connected photovoltaic (GCPV) systems. This paper addresses this gap by presenting the integration of a novel ĆUK converter that combines a switched inductor (SL) with coupled inductors (CI) in a two-stage, three-phase GCPV system. The proposed system also incorporates an LCL filter to reduce harmonic distortion, while active and reactive power (PQ) control effectively manages power using a three-phase inverter. Virtual experiments were performed in SIMULINK® to evaluate the performance of the novel converter within the PV system. These simulations assessed the efficiency of the hybrid ĆUK converter compared to conventional converters, while also analyzing the impact of the turns ratio on overall system performance. The results demonstrated significant improvements in both efficiency and power quality. This study contributes to the renewable energy field by providing an analysis of advanced DC-DC converter integration, offering an optimized solution for GCPV systems. Received on, 10 December 2024 Accepted on, 19 February 2025 Published on, 23 February 2025