Simplified Modelling and Control of Voltage Source Converter Integrated to Renewable Energy Resources

Abstract

In this article a novel power control architecture is proposed to control a three-phase voltage source converter (VSC) operating under complex conditions. VSC output is coupled with LCL filter; which filters out unwanted harmonic components. Based on the obtained model from the fractional characteristic of the passive elements a model-based controller is designed. The proposed control structure is adaptive; capable of rejecting disturbances, reducing power, voltage & frequency oscillations from the system; eventually results in desired performance Indices as per the grid codes. The proposed power control structure is validated using MATLAB/Simulink followed by laboratory-based experimentation using a hardware test-bed consisting of OPAL-RT controller and RTDS simulator for BESS integration into local distribution network.