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MODELING AND SIMULATION FOR VOLTAGE SAGS/SWELLS MITIGATION USING DYNAMIC VOLTAGE RESTORER (DVR)

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Figure

Figure 2: Equivalent  Circuit of  DVR  Figure 2 shows the equivalent circuit of the DVR,  when the source voltage is drop or increase, the  DVR injects a series voltage V inj  through the  injection transformer so that the desired load  voltage magnitude V
Figure 4 illustrates a flow chart of the feed  forward dqo transformation for voltage  sags/swells detection
Figure 5 Three-phase voltages sag: (a)-Source voltage,  (b)-Injected voltage, (c)-Load
Figure 6 Single-phase voltage sag: (a)-Source  voltage, (b)-Injected voltage, (c)-Load voltage
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