Modeling and simulation of a single phase transformer less Dynamic voltage restorer (TDVR) for domestic application

Abstract

Power quality is an importance term used for measuring quality of Electrical supply to an industrial, domestic and commercial loads. In an Electrical industry, Power quality is primarily a main concern. The power quality issue occurs when the system load in the power system is affected with problems such as transients, harmonics and voltage sag and swell. Hence the power quality issues needed to be tackled. In the Distribution side, Major power quality issue which causes disturbance in the system is due to the voltage sag and swell hence it is needed be eliminated from the system. For Eliminating the voltage sag and swell, a series Compensator that is a DVR is used in the System. Dynamic Voltage Restorer (DVR) is a power electronic device which is based on series compensator is used for eliminating voltage sag & swell from occurance. In this Simulation paper, a Transformerless Dynamic voltage Restorer (TDVR) is used considering the minimal loss and size in the power system. Predictive voltage control Algarithm technique is a flexible control scheme hence the proposed paper is presented with an objective to maintain constant sinosoidal voltage at the sensitive load.