摘要：The Dynamic Voltage Restorer (DVR), a custom power device, has been used
to protect sensitive loads from the effect of voltage sags / swells on the distribution
feeder. The DVR¡¯s main function is to inject the difference in voltage to the power line
and thus maintain the load side voltage at the optimum value. This paper presents the
modeling and closed loop control aspects of the DVR system with an H bridge inverter
working against voltage sags / swells by simulation. The power circuit of the DVR
system with an H bridge inverter with the control techniques used for compensation is
explained. The proposed DVR is modeled and simulated using MATLAB/ SIMULINK
software. The simulation results show that the control approach performs very
effectively and yields excellent compensation for compensating voltage sags / swells.
关键词：Dynamic Voltage Restorer (DVR); Voltage Source Converter (VSC); Total Harmonic Distortion (THD)
