Abstract:In order to solve the power quality problems of diesel generator controlled by the conventional PID speed control system under pulsed load conditions, such as serious voltage waveform distortion and severe frequency fluctuations, by referring to the advantages of fuzzy control in nonlinear control, a method of using fuzzy-PID governor for controlling the speed governing system is proposed to improve the power quality of diesel generator. The fuzzy-PID control principle is analyzed. A simulation model of diesel generator with pulsed load in Matlab/Simulink is built, and comparative simulation experiments for the two speed control systems are conducted. The simulation results show that the fuzzy-PID speed control system has better real-time adjustment performance than the conventional PID speed control system under pulsed load conditions, and can better improve the power quality of the system.