@article{article_1324513, title={Design and analysis of L and LCL filters for grid-connected HNPC inverters used in renewable energy systems}, journal={Balkan Journal of Electrical and Computer Engineering}, volume={12}, pages={53–61}, year={2024}, DOI={10.17694/bajece.1324513}, author={Cengiz, Muhammet and Duman, Turgay}, keywords={HNPC inverter, L and LCL filters, power quality, PV system, sliding mode controller}, abstract={With the widespread integration of renewable energy systems (RES) into the electric grid, maintaining power quality within specified limits has become a major focus. The total harmonic distortion (THD) value of the currents transferred to the grid and directly affecting power quality in (RES) such as grid-connected photovoltaic (PV) and fuel cells (FC) should not exceed 5%. To achieve this objective, various filter topologies are used to interface between the inverters, which are components of PV and FC systems, and the grid.Although there are numerous filter topologies, L and LCL-type passive filters are the most commonly used topologies in grid-connected systems. This study analyzes the L and LCL-type filter topologies for the H-bridge neutral point clamped (HNPC) inverter. The study’s modeling was carried out in the MATLAB/Simulink®. By comparing the simulation results, L and LCL filters’ harmonic attenuation capabilities, maximum power transferred to the grid, and effects on grid current have all been investigated.}, number={1}, publisher={MUSA YILMAZ}