Análise e implementação de um conversor Boost Bridgeless PFC

Abstract

The present work aims to analyze and design a Boost Bridgeless converter. PFC. In this sense, initially are expose indispensable concepts for the understanding of the work such as power factor, harmonic distortions and ways to perform the correction of the power factor. In addition, the conventional Boost converter and the Boost Bridgeless converter are discussed, extolling its main features. In order to meet the objectives specifics to the work, the methodology employed analyzes the operating modes of the inverter Boost Bridgeless and proposes its operation in Continuous Driving Mode (MCC). Thus, the design of the power and control circuit begins, which are simulated from PSIM and Matlab softwares. After that, start with the practical implementation of the prototype through the manufacture of the printed circuit boards (PCIs) of the power circuits, control and rectification. Simulation results meet the proposed goals, performing adequately the power factor correction, obtaining the value of 0.998 for PF and 5.14 % to Total Harmonic Distortion (THD). However, in the practice of results not fully meet expectations as the system does not perform a factor correction power properly.