Power Balance Theory based Space Vector Hysteresis Controller for STATCOM in Wind Energy System

Abstract

Rapid growth in the world population, a growing world economy, increasing urbanization, advancements in technology, developing nations, and rapid growth in vehicle demand have stimulated energy demand.  To meet the increased energy demand, the extraction and use of fossil fuels have been predominant. But now the scenario is fast changing due to greenhouse gas emissions from fossil fuels and its associated climate change and rapid reduction in fossil fuels. Due to this, policy makers have to make a decision to rapidly shift to non-polluting and sustainable energy sources like solar energy, geothermal, wind energy, tidal, and biomass. With the advancements in technology, the wind energy sector has grown many folds, leading to an increase in grid integration of wind turbines. This large-scale grid integration of wind turbines has led to problems like power quality, compensation of reactive power and grid stability. In this proposed research study, a STATCOM with Space Vector Hysteresis Current Controller (SVHCC) with Power Balance Theory (PBT), for extraction of reference currents for grid synchronization, is employed to compensate for the effects of grid integrated Wind Turbines (WT). The proposed controller not only compensates Power Quality (PQ) problems associated with grid integration effectively but also achieves the desired results with a lower Total Harmonic Distortion (THD) value. To highlight the efficiency of SVHCC, a comparative analysis has been performed with Simple Hysteresis Current Controller (SHCC)