Скачать или смотреть MODELING AND ANALYSIS OF DYNAMIC VOLTAGE RESTORER (DVR)-SIMULATION

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To simulate dynamic voltage restorer with the help of MATLAB simulink and implement in the hardware.To overcome power quality problems like voltage sag and voltage swell

The control of voltage source converter using Square wave pulse width modulation technique

Constant voltage at the load can be achieved by reactive power injection at point of common coupling
Common method for this is to install mechanically switched shunt capacitors in the primary terminals of distribution transformer.
The disadvantage is that, high speed transients cannot be compensated. Some sags and swells are not corrected within the limited time of mechanical switching devices.
Transformer taps can be used, but tap changing under load is costly.