Performance improvement of grid connected PV system using new converter topologies

In this paper presents the advantages of transformer less in solar based inveter in terms of size, weight and losses. The parasitic capacitance between galvanic between PV module and grid. This paper presents two new schemes, namely high efficiency transformer less sep cuk inverter topology and interleaved boost converter topology. The ZVT based interleaved boost converter is utilized at power processing stage this helps raise the PV array voltage. In order to reduce total harmonic distortion and improve current response suitable compensation units are embrded. The comparison has been made between two proposed schemes by the choice of inverter topology and the control scheme determine the value of leakage current and power quality issues.