A method for controlling a diesel generating set including a diesel engine, a generator having a terminal voltage and a generator output voltage magnitude and frequency response, an exciter having an exciter field voltage , a speed governor having a generator speed reference and a first communications interface, and an automatic voltage regulator having a generator reference voltage and a second communications interface, the method comprising steps of: - determining, by the automatic voltage regulator , a voltage feedback control output voltage (V t FLC , 84) using the filtered terminal voltage of the generator divided by a filtered speed in per-unit of the generator; - controlling the exciter field voltage , by the automatic voltage regulator , using the generator reference voltage modified by the voltage feedback control output voltage (V t_FLC , 84); - measuring, by the automatic voltage regulator , a real power output of the generator; - determining, by the automatic voltage regulator , a rate of change of the generator real power output; - determining, by the automatic voltage regulator , a speed feedback control output based on the rate of change of the generator real power output; - transmitting, by the automatic voltage regulator , through the first communications interface, the speed feedback control output to the speed governor ; - receiving, by the speed governor , the speed feedback control output from the automatic voltage regulator ; - adjusting, by the speed governor , the speed of the diesel engine by modifying the generator speed reference based on the speed feedback control output; and - minimizing, by the automatic voltage regulator , variations of the generator output voltage magnitude and frequency response from nominal by determining the speed feedback control output in conjunction with voltage feedback control output. - determining, by the automatic voltage regulator , a voltage feedback control output voltage (V t FLC , 84) using the filtered terminal voltage of the generator divided by a filtered speed in per-unit of the generator; - controlling the exciter field voltage , by the automatic voltage regulator , using the generator reference voltage modified by the voltage feedback control output voltage (V t_FLC , 84); - measuring, by the automatic voltage regulator , a real power output of the generator; - determining, by the automatic voltage regulator , a rate of change of the generator real power output; - determining, by the automatic voltage regulator , a speed feedback control output based on the rate of change of the generator real power output; - transmitting, by the automatic voltage regulator , through the first communications interface, the speed feedback control output to the speed governor ; - receiving, by the speed governor , the speed feedback control output from the automatic voltage regulator ; - adjusting, by the speed governor , the speed of the diesel engine by modifying the generator speed reference based on the speed feedback control output; and - minimizing, by the automatic voltage regulator , variations of the generator output voltage magnitude and frequency response from nominal by determining the speed feedback control output in conjunction with voltage feedback control output. <EOS>