In the thorough analysis and research on the basis of the generator Ac Excitation, fully integrated the advantages of fuzzy control does not depend on the object model, rapid and so on. Put forward a kind of fuzzy controller with intelligent novel decoupled excitation control strategy for AC Excited Generator. Application of fuzzy control theory to establish the corresponding excitation control model and the design of the intelligent fuzzy excitation controller on the base of double PWM Converter. Through the simulation analysis, verified the intelligent fuzzy excitation controller can improve the system performance.Intelligent fuzzy control method is correct and effective.