Design of PID plus second order derivative controller for automatic voltage regulator using whale optimizatio algorithm

This research work presents a metaheuristic technique, whale optimization technique (WOA) for optimizing the controller parameters of proportional-integral-derivative plus second order derivative (PIDD²) controller for controlling the automatic voltage regulator (AVR) system installed in the power generator system for stabilizing the terminal voltage. Distinct evolutionary optimization techniques are considered for the comparison task with the propounded controller on the basis of profiles of terminal voltage response of the investigated AVR system. The robustness of the propounded controller has been analyzed by altering the system parameters in which the response of the controller has been observed. It may be observed from the transient response outline of the terminal voltage and the robustness analysis that the proposed WOA based PIDD² controller exhibits a highly improved robust control structure for controlling the AVR in electrical power system.