ELECTRICA
RESEARCH ARTICLE
Passive Lossless Snubber for PFC AC–DC Converters

Passive Lossless Snubber for PFC AC–DC Converters

1.

Department of Electrical Engineering, Yıldız Technical University Electric and Electronic Faculty, İstabul, Turkey

ELECTRICA 2020; 20: 97-106
DOI: 10.5152/electrica.2020.19091
Read: 344 Downloads: 128 Published: 10 February 2020

In this study, an improved passive lossless snubber cell for the non-isolated pulse-width modulation direct-current (DC)–DC converter family is proposed. The proposed snubber cell provides soft switching for all semiconductor power devices in the converter under wide-input voltage–current and output load ranges. Detailed theoretical analysis is carried out and verified with the implementation of a continuous conduction mode power-factor correction boost converter having 220-  input, 400-  output, 50-kHz switching frequency, and 1-kW output power. The overall efficiency of the proposed converter at full load increased from 85% in hard-switching conditions to 97.5%, thanks to the proposed lossless passive snubber cell. The application of the proposed snubber cell to other DC–DC converters is also presented.

Cite this article as: Bodur H, Yeşilyurt H, Akboy E. Passive Lossless Snubber for PFC AC–DC Converters. Electrica, 2020; 20(1): 98-107.

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