Intelligent control of shunt active filter for power quality improvement using fuzzy logic

Now a days, power quality issues are very important for the sensitive equipments to increase the efficiency of the syatem. In the power system, disturbances are due to non linear characteristics and fast switching of the power electronics apparatus. Because of the use of the power electronic devices many distortions are introduced. Due to these harmonics the devies connected to the system suffer and their life is reduced. Our main aim is to use a shunt active filter that improves these harmonics and gives a sinusoidal current at the load side. For improving power quality fuzzy controllers are used and found to be better than traditional controllers.