Simulink Model for Unified Power Quality Conditioner (UPQC) in Power System Simulation

This document describes the Simulink model implementation for the Unified Power Quality Conditioner (UPQC) in power system applications. The UPQC represents an advanced power electronic device designed to enhance electrical power quality by simultaneously compensating for both voltage and current imperfections. The model incorporates series and shunt converters controlled through PWM techniques to mitigate voltage sags/swells, harmonic distortions, and power fluctuations while improving the system's power factor. The Simulink implementation enables engineers and researchers to simulate UPQC performance under various grid conditions through customizable control blocks including: - Reference signal generation algorithms for voltage/current compensation - DC-link voltage regulation using PI controllers - Synchronization techniques with Phase-Locked Loops (PLL) - Harmonic extraction methods employing pq-theory or Fourier analysis Through parametric studies and dynamic simulations, researchers can analyze the UPQC's compensation effectiveness, optimize control parameters, and develop advanced mitigation strategies for complex power quality issues. The model's modular structure facilitates integration of custom control algorithms and real-time simulation capabilities for practical system validation.