Grid-friendly design of grid-connected PV inverter

The present large-scale grid-connected photovoltaic power generation in the growing proportion of the grid, harmonic suppression in the grid, active and reactive power regulation, low voltage grid through the demand and so there are many gaps. In this thesis, this study shows the LCL filter and carrier based technology to achieve full power segment shift and still maintain low THD; given active power, reactive power line conditioning method; given the low voltage across the technology implementation. Finally, build 500KW photovoltaic inverter prototype testing to verify the correctness of the study design. © 2011 IEEE.