Dynamic Voltage Restorer (DVR) Modeling and Simulation Techniques

This project aims to develop and enhance modeling and simulation techniques for Dynamic Voltage Restorers (DVR) to protect critical loads from voltage sags and swells. The DVR employs dynamic voltage compensation through power electronics-based control algorithms, typically implemented using voltage source converters (VSC) with PWM modulation. By injecting precise compensating voltages, the system restores optimal load voltage waveform and improves overall power quality. The novel architecture incorporates real-time sag/swell detection algorithms and compensation logic to ensure reliable power supply stability.

Understanding system transient response is critical for analyzing dynamic behavior. Electromagnetic transient studies, often simulated using tools like MATLAB/Simulink or PSCAD, enable accurate prediction of system responses to various transient phenomena that cannot be adequately modeled through steady-state analysis alone. These simulations typically involve implementing differential equations representing network dynamics and power electronic switching behaviors.

This research specifically addresses transient analysis in electrical networks incorporating embedded, power electronics-based FACTS and Custom Power controllers. Through detailed simulation modeling involving control system implementation (e.g., PI controllers, phase-locked loops) and power circuit design, we analyze how these networks respond to dynamic changes. The findings contribute to enhanced power system reliability and performance, ensuring stable operation for critical loads through optimized control strategy implementation.