Performance Evaluation of PMSG-Wind Energy Conversion System with Integrated DSTATCOM Functionality for Enhanced Grid Power Quality: A Real-time Simulation Approach

Abstract

This paper presents a dynamic performance evaluation of a permanent magnet synchronous generator (PMSG)–wind energy conversion system (WECS) with integrated DSTATCOM functionality. The system employs back-to-back voltage source converters (VSCs), where the grid-side VSC not only transfers power but also compensates for harmonics and reactive power, enhancing grid power quality. The control strategy utilizes field-oriented control for PMSG and indirect current control for the VSC to ensure unity power factor and harmonic suppression at the Point of Common Coupling (PCC). Real-time simulations using the Typhoon HIL 604 simulator are conducted for two scenarios: (1) gradual wind speed variation and (2) sudden load reduction. The results demonstrate effective PMSG speed tracking, stable grid voltage, reduced harmonic distortion (THD < 5%), and smooth power adaptation, confirming the system's capability to improve grid stability and power quality under varying wind and load conditions.