Fuzzy Logic Controlled based PFC Cuk Converter Fed BLDC Motor Drive

Abstract

a bridgeless single phase ac-dc rectifier basedCuk derived converter topology fed BLDC motor isproposed to improvepower factor at the AC mains near tothe unity with low THD for PFC applications. It utilizes onecontrol signal over the whole line cycle.The most effective method of power quality improvement is also simulated using MATLAB/Simulink.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 issimulated in MATLAB/Simulink with PI and fuzzy logiccontroller for precise speed control. A diode bridge rectifier (DBR) followed by a Cuk converter working in discontinuous conduction mode(DCM)is used for control DC link voltage with unity power factor at AC mains. The fuzzy based controller system is used for general purpose industrial applications.