Conductance factor based control method for DSTATCOM to improve power quality

Abstract

In this paper a conductance factor based reference current extraction method is presented to control Distribution STAtic COMpensator (DSTATCOM). The proposed control algo rithm extract fundamental in phase and quadrature components of load currents using conductance factor and voltage unit vector at Point of Common Coupling (PCC). These fundamentals com ponents are further used to generate reference source currents. The compensator with this control technique makes the system to operate in Unity Power Factor (UPF) mode or Zero Voltage Regulation (ZVR) mode during normal supply conditions, Perfect Harmonic Cancellation (PHC) mode during distorted supply conditions. The performance of the proposed control algorithm is validated with simulation studies using MATLAB/SIMULINK environment.