Open AccessAnalysis and design of two‐switch flyback converter with double passive lossless snubber
Author(s) -
Soltanzadeh Karim,
Yousefi Mohammad Reza
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.2017.0442
Subject(s) - snubber , flyback transformer , inductor , flyback converter , diode , capacitor , voltage , rectifier (neural networks) , power (physics) , control theory (sociology) , electrical engineering , electronic engineering , engineering , computer science , physics , boost converter , control (management) , stochastic neural network , quantum mechanics , machine learning , artificial intelligence , recurrent neural network , artificial neural network , transformer
A double passive lossless snubber (DPLS) is applied to a pulse width modulation two‐switch flyback converter (TSFC). The DPLS, which has two capacitors, two inductors, and four diodes, has achieved zero voltage turn off and zero current (ZC) turn on for power switches without high voltage and current stresses; ZC turn on and ZC turn off for a rectifier diode without a reverse recovery problem. In this study, the steady‐state operating modes of TSFC–DPLS are analysed and the proposed converter design procedure to operate in the continuous conduction mode is taken. To validate the theoretical analysis, a 240 W prototype TSFC–DPLS under an 85–135 V rms input, 24 V DC output, and 300 kHz is implemented. Finally, by utilising the experimental results, the soft switching conditions under wide input voltage and output load ranges are discussed.