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Soft‐Switching Interleaved PFC Converter with Lossless Snubber
Author(s) -
ANDO ITARU,
ABE KODAI,
NAKAMURA TOMOAKI,
ARAKI YUSHI,
OHNISHI KIYOSHI
Publication year - 2017
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22898
Subject(s) - snubber , ripple , boost converter , lossless compression , power factor , electronic engineering , ćuk converter , control theory (sociology) , converters , power (physics) , voltage , computer science , engineering , capacitor , electrical engineering , physics , control (management) , data compression , artificial intelligence , computer vision , quantum mechanics
SUMMARY This paper describes a soft‐switching interleaved power factor correction (PFC) converter with a lossless snubber. AC–DC converters require a unity input power factor characteristic with highly efficient operation to prevent the inflow of harmonic current to the power source. The proposed PFC converter improves the input current ripple with interleave control. The converter realizes a high efficiency by the soft‐switching operation of all switching devices without a large auxiliary resonant circuit. This paper introduces the soft‐switching operation of the converter. In order to confirm the validity of the proposed converter, experiments with a prototype of the PFC converter have been performed. The experimental results indicate that the proposed converter can realize the soft‐switching operation of all switching devices, a reduction in the input current ripple, a unity power factor of 98% or more, a sinusoidal input current, and constant output voltage control. The efficiency of the proposed PFC converter with a lossless snubber is higher than that without the lossless snubber. The results presented in this paper confirm the validity of the proposed converter.