This paper demonstrates the mitigation of power quality issues in a grid connected wind energy conversion system using UPFC. The procedure to compensate the power quality issues like voltage sag and harmonics are presented. A Frame work for 25 bus test system is developed in the ETAP & load flow analysis &harmonic analysis is performed. It is observed that the UPFC is effective in compensating ...

The harmonic currents are generated by single phase nonlinear loads. The mirror surplus harmonic elimination method is used mostly because of its less computation. The Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) based methods can provide theoretically the highest quality output among all the PWM methods. In this paper SHEPWM model of a multilevel series connected voltage sour...

An AC/DC converter comprising a cycloconverter and a capacitively snubbered voltage source converter (VSC), coupled by a medium frequency transformer, offers significant advantages. Bidirectional AC/DC power flow as well as voltage transformation and isolation can be achieved. By mutual commutation of the converters, soft switching can be achieved for all semiconductors, thus, link frequency ca...

The use of switch mode power supply (SMPS) load such as computer, laptop, etc in residential well commercial areas give rise to harmonics pollution the electrical distribution system which causes quality poor and function equipment connected is affected. Many appliances have an SMPS design that characteristically draws a distorted current flows back input distortion voltage waveform. To ensure ...

Active filters provide significant harmonic and reactive power compensation and are thereby widely accepted as devices for power quality enhancement.. Many research works have been done to improve the dynamic performance of active filters. Current research work focuses on implementing a Minimally Switched Shunt Active Power filter for power quality enhancement. Minimally switched grid interacti...

This paper deals with the simulation of a shunt active filter using seven level cascaded H-bridge multilevel inverter. The proposed active filter topology can also produce seven voltage levels, which significantly reduces the switching current ripple and the size of passive components. The seven level active shunt filter provides compensation of load power factor and current harmonics. For comp...

In order to detect grid harmonic and reactive current precisely and real time, this paper arrived at a method of harmonic and reactive current real-time detection applied to active power filter based on the three-phase circuit instantaneous reactive power theory. With Matlab simulation software, researches on simulation of harmonic detection means are carried out, and an analysis of the simulat...