Authors : P.M. Balasubramaniam and G. Gurusamy
Abstract: In this study the optimized fuzzy logic controlled three-phase shunt active power filters to eliminate harmonics of line current, correct power factor, balanced and unbalanced loads is given. Here for efficient operation of the system this fuzzy logic controller is optimized by Ant Colony Algorithm (ACA). The controller is customized by adding an additional tuning controller to improving filter performance for light loads this tuning controller controls the output parameter of Shunt Active Power Filter (SAPF) by tuned to an optimized value. This optimized SAPF system has very short response time delay for different complex power quality issues and various compensation purposes. The system obtains dissimilar compensating current references accurately and easily. The SAPF system can be used for different compensation purposes and it improves power quality accurately. Moreover, simulation shows that installation of this optimized controller in the SAPF system eliminates harmonics and corrects the waveform of the line current and corrected power factor. Simulation results obtained with MATLAB and testing results on an shunt APF are presented to validate the performance of the compensation system.
P.M. Balasubramaniam and G. Gurusamy , 2011. Improvement of Power Quality Using Optimized Non-Linear SAPF Controller. International Journal of Soft Computing, 6: 183-189.