Implementation of Multilevel inverter based Dynamic voltage restorer

Abstract

Power quality is one of the major area of concern in recent forty years both in transmission and distribution system. The major fault occur in the system are voltage sag, voltage swell, harmonics, voltage fluctuation etc. There is various custom power devices are used to compensate such problems. In this paper we have discussed on the Multi-level inverter based DVR which is used to protect the sensitive equipment such as computer, printer from line fault such as voltage sag. The implementation of the DVR in the distribution system is based on the multilevel inverter topology against voltage sag. The system is used for the distribution system for single phase 230V supply. This paper represent, the Simulink modal of multi level inverter based DVR system which can compensate the voltage sag. All result are shown in the MATLAB software and Result shown that, the multilevel inverter can compensate voltage sag problem more effectively & improve voltage quality.