A new inverter topology for integration of renewable energy sources and improvisation of power quality

摘要

The present invention is a system for converting source DC from the renewable energy sources into a three-phase AC and improving power quality of the source DC from renewable energy sources. The system is integrated with the renewable energy sources at a point before the load terminals in the electrical grid at the distribution end. The invention comprises of three units of boost DC-DC converters that are used for conversion from the source DC into three-phase AC. Each unit of boost DC-DC converters converts source DC into one of the three phases of the three-phase AC. A reference input current to each of the boost converter is determined using average power balance technique. The source DC from renewable sources is converted into three-phase AC by controlling the switching of each boost DC-DC converters by hysteresis current control technique based on the determined reference input current to each of the boost DC-DC converters. Fig. 1