Bang-Bang Controller Based STATCOM Connected Wind Generating System for Mitigation of Source Current Harmonics

Abstract

This paper work is aimed at developing a STATCOM-based control scheme for mitigating source current harmonics in a grid-connected wind generating system. A bang-bang controller which is based on hysteresis current control scheme is developed for STATCOM and the performance of the control scheme is investigated through a test system modeled in MATLAB/SIMULINK platform. Simulation results are presented to demonstrate the impact of integration of wind generating system with the grid and the effectiveness of the STATCOM control scheme in minimizing the impact.FFT analysis carried out for the source current shows that the THD is considerably reduced and is clearly within limits imposed by standards with STATCOM connected at point of common coupling(PCC). Keywords - Battery Energy Storage System (BESS), Power Quality (PQ), Point Of Common Coupling (PCC) , Wind generating System (WGS), wind turbine generating system (WTGS).