Abstract: Taking the microturbine and its electrical parts as a whole, a complete mathematical model of microturbine power generation system was established according to dynamic characteristics of the microturbine power generation system. Fuzzy PID controller was added to revolving speed loop to analyze dynamic characteristics of on-load microturbine system in isolated network. The simulation results show that the microturbine power generation system based on fuzzy PID control has good stability and flexibility.