Abstract:
Control of a dynamic voltage restorer (DVR) based on Space Vector PWM is described.
The control algorithm is able to compensate for any type of voltage sag and uses a software phaselocked
loop to track phase jumps during a fault. The control algorithm restores the depressed
voltages to the same phase and magnitude as the nominal pre-sag voltages and then gradually
tracks to the phase of the depressed voltages. Experimental results are shown to validate the control
algorithm using a threc-phase prototype with a power rating of IOkVA
