Power quality enhancement of single phase grid tied inverters with model predictive current controller

Abstract

Recognition of renewable energy sources as alternative sources for power generation has augmented the number of distributed generation plants being incorporated into the conventional power distribution system. The single phase voltage source inverter allying the distributed generation plant with the grid has to address various issues related to the quality of current injected into the grid, output power factor, and power exchange between the plant and the grid. This paper focuses on the analysis, design, and implementation of a digital predictive current control technique known as model predictive current controller for the control of single phase power inverter integrating renewable energy based plant with the grid. The proposed controller is tested in diverse operating conditions and is compared with the existing proportional resonant current control scheme. The simulation and experimental results validate the efficacy of the proposed control technique.