Abstract
This paper analyzes the impact of voltage anomalies, particularly voltage sags and short-duration swells, on sensitive electrical and electronic equipment. The causes of these network disturbances and their rapid detection methods are presented. The main focus of the work is the evaluation of active compensation technologies, with an emphasis on the Dynamic Voltage Restorer (DVR). The paper outlines the control architecture, inverter topology, and voltage injection strategies required to ensure an uninterrupted power supply to critical loads. The control architecture utilizes the Park Transform (d-q-0) and a Phase-Locked Loop (PLL) for quasi-instantaneous detection, enabling disturbance compensation with a response time of less than half a cycle of the fundamental wave (<10 ms). The system's performance is validated through MATLAB/Simulink simulations under severe voltage variation scenarios (30% voltage drops and rises). The results confirm that the DVR system is the most technically and economically efficient method for protecting critical loads, preventing the accidental shutdown of production lines, and eli
Cuvinte cheie
Power Quality
Voltage Sag
Voltage Swell
Dynamic Voltage Restorer (DVR)
Park Transform
Active Compensation
Istoric articol
Publicat
01.04.2026
Informații autori
Citare recomandată
Dragos Pasculescu, Daria Ionescu, Dan Cristian Lazar, Nicolae Daniel Fita, Teodora Lazar (2026). Modern Methods for Rapid Correction of Voltage Anomalies in Sensitive Loads Using DVR (Dynamic Voltage Restorer) Systems. Journal of Fiability and Durability, 1(1), 89–104. https://doi.org/10.65631/JFD.1(37).2026.13
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