A new five-level inverter with reduced leakage current for photovoltaic system applications

Abstract A general growth is being seen in the use of renewable energy resources, and photovoltaic cells are becoming increasingly popular for converting green solar into electricity. Since voltage produced by DC, an inverter required to connect them grid with or without transformers. Transformerless inverters often used their low cost power loss, light weight. However, these suffer from leakage current system, a challenge that needs be addressed. In this paper, topology two alternative connection models presented stabilize common mode reduce current. The output characteristic proposed five-level, which reduces harmonic distortion compared two- three-level inverters. operation modes described analyzed. structures simulated MATLAB/Simulink some well-known structures. Results show structure both effectively improves THD.