An Efficient BFO Algorithm for Self Tuning Pi-Controller Parameters for Shunt Active Power Filter

In recent decades, the utilization of highly automatic electric equipments has resulted in enormous economic loss. Thus, the power suppliers as well as the power consumers are very much concerned about the power quality issues and compensation approaches. In order to deal with this issue, Active Power Filter (APF) has been considered as an attractive solution due to its significant harmonic compensation. But, the performance of APF is not consistent and is varies based on the output of the controller techniques. This research work mainly focuses on using an efficient control strategy for extracting reference currents of shunt active filters under non linear load conditions. An efficient ( ) control strategy is used in this approach for attaining utmost profit from grid-interfacing inverters installed in transmission systems. The voltages are controlled through the PI controller which is further tuned by an optimization approach. Bacterial Forge Optimization (BFO) is used in this approach for tuning the PI controller for the optimal value. The inverter used in this approach can be considered as a Shunt Active Power Filter (SAPF) to compensate non linear load current harmonics. In order to improve the overall performance of the system, Space Vector Pulse Width Modulation (SVPWM) is used in this proposed approach which regulates power frequency and produces good circularity through DC–AC part. SVPWM also eliminates the 3 order harmonics and minimizes the 5 order harmonics effectively. The integration of ( ) control strategy and SVPWM has been proposed in this research work. Simulation results are carried out in MATLAB/Simulink and the performance of the proposed approach is compared with other control strategies. This research works shows unique approach for attaining maximum benefits from RES with suppression of current harmonics. Key-Words: Bacterial Forge Optimization, Shunt Active Power Filter, Space Vector Pulse Width Modulation