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In this paper, three different system topologies for dynamic voltage restorers (DVRs) are modeled and tested using Simulink's SimPowerSystem Toolbox for power system quality studies. The DVR controls are based on hysteresis voltage control. Simulation tests on radial distribution system, equipped with the DVR under three-phase and single-phase voltage sags with phase jump, are used to verify the operation...
A dynamic voltage restorer (DVR) to compensate deep voltage sags and harmonics is proposed. The DVR consists of shunt and series converters connected back-to-back through a DC-to-DC step up converter. The presence of the DC-to-DC step converter permits the DVR to compensate deep voltage sags for long duration. The series converter is connected to the supply side whereas the shunt converter is connected...
Dynamic Voltage Restorers are utilized to protect sensitive loads from voltage sags and swells which take place in the distribution systems. In this paper, a Dynamic Voltage Restorer (DVR) based on hysteresis voltage control is proposed. The DVR is modeled using Simulink'SimPowerSystem Toolbox. Discrete Fourier Transform (DFT) is used to detect the magnitude and phase jump of the voltage sag and swell...
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