Performance Analysis of Dynamic Voltage Restorers with Cascaded Two Series Converters for Power distribution Systems

Abstract

This paper presents three dynamic voltage restorer (DVR) topologies with open-end winding transformer (OEW-T) and conventional three H-Bridge DVR topologies. These types of topologies are proficient to compensate voltage sag/swells in three-phase four wire (3P4W) power distribution systems under the unbalanced conditions. An acceptable control strategy, as well as the PWM technique, is presented as well as the operating principles, characteristics and a comparison between proposed and conventional configurations. This DVR system is most appropriate in distribution systems where voltage sags occur most commonly. This paper presents modelling and analysis of a Dynamic voltage restorer (DVR) system using MATLAB Simulation for minimizing voltage sag by proposed topologies and conventional topologies.