PWM AC/DC converter with reduced sampling frequency fuzzy control

Getting high performance in the operation of the AC/DC PWM converters is based on sophisticated circuits and control strategies. The paper presents am efficient, robust and easy to implement fuzzy-logic controller for a PWM AC/DC converter with high power factor, This type of converter exhibits strong nonlinear behaviour and requires complex gating patterns, difficult to be analytically derived A special new environment, written in CPP language, has been developed around the! PSPICE kernel in order to provide design and simulation facilities such as: closed-loop simulations, different control strategies easy to set and change. Two fuzzy logic based control strategies were designed and investigated using this original simulation environment. The closed-loop system was tested through extensive simulation experiments and exhibited good transient and steady-state behaviour. Comparative studies with different control strategies reported In the literature proved the superiority of the proposed control method.