Published Paper Details:

This project focuses on the control of an existing grid interfacing inverter to improve the quality of power at point of common coupling for 3-phase 4-wire Distribution systems. The grid integration of distributed generator system normally poses many connection issues leading to discouraging the use of distributed generator. Hence a novel control strategy is presented for improving the efficient power quality to the interconnection of distributed generator with a grid. The grid-inter facing inverter can be effectively utilized for power conditioning without disturbing its regular operation of real power transfer. The grid-interfacing inverter with the proposed approach can be utilized to: i) inject real power generated from Renewable energy source to the grid, and/or, ii) operate as a shunt Active Power Filter. To compensate current unbalance, load current harmonics, load reactive power demand and load neutral current by the Proportional Resonant controller (PR). This approach consequently eliminates the need for additional power conditioning equipment to improve the quality of power at Point of common coupling. General MATLAB/Simulink simulation as well as the Digital Signal Processing based experimental results have validated the proposed approach and have shown that the grid-interfacing inverter can be utilized as a multi-function device.