Simulation of Open Loop and Feed-Back Controlled Bridgeless PFC Boost Converter

摘要

Conventional Bridge PFC Boost converter has higher conduction losses and less efficiency. To avoid this Bridgeless PFC Boost converter is used. This paper proposes a new closed-loop controlled Bridgeless PFC Boost Converter. Unity Power Factor can be obtained by using feed forward and feed-back control unit and the output voltage of the converter has greatly increased. Performance of the circuit and efficiency also get increased. Since input voltage drop get reduced. This paper also compares conventional Bridgeless PFC Boost converter with feed forward and feedback controlled Bridgeless PFC Boost converter. MATLAB simulation result shows that the Power Factor is Unity.