Enhancing transient response performance of automatic voltage regulator system by using a novel control design strategy

The terminal voltage of the synchronous generator must be kept between determined values by a closed-loop control system called automatic voltage regulator (AVR). To enhance the performance of the AVR system, this study introduces a new type of controller design. In this context, a novel controller named fractional order (FO) proportional-integral-derivative plus second-order derivative (FOPIDD2) has been proposed for the first time, and an optimization method known as the reptile search algorithm (RSA) has been utilized in order to tune the six parameters of FOPIDD2 controller. The performance of the proposed RSA-FOPIDD2 controller is compared with twenty-two studies employing a variety of controllers such as PID, PIDA, FOPID, and PIDD2 and published within the last three years. The results of the comparison show that the proposed controller provides improved performance for the AVR system when compared to other methods.