Simulink model for mitigation of Sag/Swell by Dynamic Voltage Restorer using SPWM technique

Abstract

By definition, a DVR is a controlled voltage source inserted in between the network and a sensitive loads through a transformer injecting voltage into the network to correct any disturbance affecting a sensitive load voltage. The Power Quality (PQ) related problems have become important issues. Many solutions have been proposed to address the PQ problems. The most attractive and flexible way is to use power electronic converter based devices such as Dynamic Voltage Restorer (DVR), Distribution Static Compensator (DSTATCOM), Unified Power Quality Conditioner (UPQC), Uninterruptible Power Supply (UPS), and other devices usually called custom power devices. Among custom power devices, the DVR is the most economical solution to overcome the voltage-related PQ problems as compared with others. This paper presents the matlab Simulation model and results of Dynamic Voltage Restorer Considering the fault conditions using sinusoidal pulse width modulation technique.