A new topology scheme with the current-sharing reactor and control strategy of photovoltaic inverter

In this paper, a novel topology scheme and its control strategy of photovoltaic inverter is presented. The proposed topology employ interleaving parallel connection technique and coupled-inductor (Current Sharing Reactors) into low voltage inverter to provide a multilevel voltage, increasing the output power. A close loop control method is put forward for achieving the stability and reliability of current output. Simulation studies in the paper verify the steady state and transient performance of the proposed topology scheme and control method. The simulation and experiment results show that implementation of the proposed design could significantly improve the power quality of photovoltaic inverter.