Bridgeless PFC Cuk Derived Converter Fed BLDC Motor with PID and Fuzzy Logic Controller

A bridgeless single phase ac-dc rectifier based Cuk derived converter topology fed BLDC motor is proposed to improvepower factor at the AC mains near to the unity with low THD for PFC applications. It utilizes one control signal over the whole line cycle. In addition, the proposed converter exhibits low inrush current and low magnetic emissions as classical Cuk topology. The partial elimination of diodes in DBR in the bridgeless topology results in lower conduction losses as compared with conventional Cuk converter. The proposed method is simulated in MATLAB/Simulink with PID and fuzzy logic controller for precise speed control. Simulation results are presented along with the theoretical analysis. Keywords— Power Factor Correction(PFC), Total Harmonic Distortion (THD), Diode Bridge Rectifier(DBR), Cuk Derived Converter, Fuzzy Logic