Application of UPQC on Grid Interfaced WECS

Custom power devices—such as DVR, D-STATCOM, and UPQC—play an important role in enhancing the power quality of distribution networks. Depending on the nature of the disturbance or the specific requirement at the load or grid side, an appropriate device and compensation method can be selected. Among these solutions, the Unified Power Quality Conditioner (UPQC) combines both series and shunt active filters, enabling it to address issues related to supply-side voltage disturbances as well as load-side current distortions. In the proposed work, UPQC is treated as a versatile power-conditioning unit capable of mitigating voltage anomalies, compensating for fluctuations, and suppressing harmonic distortion. This study focuses on integrating UPQC with a wind energy conversion system, and the designed system is tested through MATLAB/Simulink simulations to verify its performance and the effectiveness of the compensation strategy