Hybrid Series Active Power Filter for Harmonic Compensation Using PI Controller Tuned with WOA Technique.

In this paper, the PI (Proportional Integral) controller tuned with the Whale optimization algorithm (WOA) has been designed for the hybrid series active power filter (HSAPF). The PI controller here is used to set the DC link capacitor voltage to a fixed value. The controller parameters have been tuned with WOA technique to improve the performance of the controller. The WOA technique adopts a shrinking mechanism that helps to cover the entire search space so that the chances of getting the optimal parameters are high. To generate the gate signal pulse width modulation technique has been used. In order to justify the above proposed technique a Simulink model has been developed in MATLAB and the results are compared with those obtained from the existing techniques such as particle swarm optimization (PSO), Grey wolf optimization (GWO), and teaching learning-based optimization (TLBO). The simulation results show that the above proposed technique is superior to the existing techniques as it certainly gives promising results in supressing the harmonics in the system to the desired level as per the IEEE standard 519. [ABSTRACT FROM AUTHOR]