Comparative Analysis of Control Algorithms for DSTATCOM in Grid-connected Wind Energy System

This paper presents a comprehensive comparative analysis of various control algorithms for distribution static compensators (DSTATCOMs) in grid-connected wind energy systems. The integration of wind energy into grid systems presents significant challenges related to power quality (PQ), particularly in voltage stability, harmonic distortion and reactive power support. DSTATCOM is widely deployed to mitigate these issues. DSTATCOMs have emerged as effective solutions for enhancing PQ in grid-connected wind energy systems. The study focusses on classical control strategies such as synchronous reference frame theory (SRF), power balance theory (PBT) and Instantaneous reactive power theory (IRPT). These control strategies are assessed based on their performance in enhancing grid stability, improving PQ and responding to dynamic wind conditions. The performance of each algorithm is evaluated through simulations, considering factors such as response time, power factor correction, harmonic suppression and reactive power compensation. PBT control algorithm is one of the best control techniques to improve PQ related issues. Simulation results highlight the efficiency, robustness and adaptability of each algorithm, offering practical insights into their applicability in enhancing the stability of grid-connected wind energy systems. Basically, several loads are of nonlinear types such as medical instruments, computers, LED lights, air conditioners, computer power supplies, xerox machines and laser printing machines. DSTATCOM becomes most important for mitigation of harmonics and power factor correction for various nonlinear loads. The analysis provides a clear framework for selecting the most appropriate control method for DSTATCOM in wind energy applications, contributing to more reliable and efficient grid-connected wind energy systems.