Open AccessAC–DC bridgeless buck converter with high PFC performance by inherently reduced dead zones
Author(s) -
Lin Xiang,
Wang Faqiang
Publication year - 2018
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2016.0962
Subject(s) - buck converter , total harmonic distortion , power factor , rectifier (neural networks) , buck–boost converter , harmonic , power (physics) , control theory (sociology) , ćuk converter , diode , distortion (music) , converters , computer science , electronic engineering , inductor , voltage , boost converter , engineering , physics , electrical engineering , acoustics , amplifier , stochastic neural network , control (management) , cmos , quantum mechanics , machine learning , artificial intelligence , recurrent neural network , artificial neural network
In this study, a novel AC–DC bridgeless buck converter for power‐factor‐correction (PFC) applications with the inherent current‐shaping ability and high PFC performance is proposed. Under a certain operation condition, dead zones in the proposed converter are reduced inherently compared with its conventional buck PFC counterpart, which result in higher PF and lower total harmonic distortion significantly. Furthermore, two rectifier diodes are eliminated, which contributes to efficiency. The detailed operation principle and theoretical analysis of discontinuous conduction mode (DCM) are presented. The simulation comparison between the conventional and proposed bridgeless buck PFC converter is also described. Finally, an experimental lab‐made prototype operating in DCM is constructed to validate the feasibility of this proposed converter.