A Droop Based-Control Strategy of Stand-Alone Single-Phase Converters for Microgrid Applications

Abstract

A control technique based on dynamic model of stand-alone single-phase voltage-source converter (SPVSC) in dq reference frame and droop curve equation is proposed in this paper to stable the voltage of point of common coupling (PCC) when renewable energy resources (RERs) are linked in a microgrid structure. The proposed control strategy is designed with respect to the aimed state variables of PCC frequency and voltage magnitude as well as the droop curve specifications. Moreover, an evaluation on PCC voltage frequency and voltage magnitude-based curve is presented for further analyzing the proposed controller performance. Simulation results in MATLAB/SIMULINK software prove the abilities of proposed controller in reaching stable operation of PCC voltage in microgrid application under load alteration.