Analysis of Improved H6 Topology for grid-tied PV System to Minimize Leakage Current

The fundamental work done in this paper is to limit the leakage currents of grid tied PV system by using the improved H6 topology. These leakage currents are diminished by the lessening of maximum recurrence voltage transients in the terminal and normal mode voltages. By utilizing PWM method, the high recurrence voltage transients can be decreased. An incremental conductance technique is utilized to track the most extreme power point from P-V graph of PV system. Correlation of existing CMLI (Cascaded Multilevel Inverter Topology) and enhanced H6 topology is clarified in this paper. THD (Total Harmonic Distortion)of the system is decreased in this topology.