Zero‐voltage switching half‐bridge pulse width modulation DC–DC converter with switched capacitor active snubber cell for renewable energy applications. (16th April 2021)

• Record Type: Journal Article
• Authors: Bodur, Haci; Yesilyurt, Huseyin; Ting, Naim Suleyman; Sahin, Yakup
• Is Part Of: International journal of circuit theory and applications. Volume 49:Number 9(2021)
• Page Start: 2686
• Page End: 2698
• Publication Date: 2021-04-16
• Subjects: half‐bridge converter -- hard switching -- renewable energy -- snubber cell -- soft switching -- zero‐voltage switching; Electric circuit analysis -- Periodicals; 621.319205
• DOI: 10.1002/cta.3015
• Languages: English
• ISSNs: 0098-9886

Abstract

Summary: In this paper, soft switching isolated half‐bridge converter with a new active snubber cell that uses switched capacitor for renewable energy applications is proposed. The proposed snubber cell does not consist any magnetic element so that its structure is quite simple. Furthermore, the auxiliary switches in the proposed active snubber cell are exposed to only half of the input voltage. There is no additional voltage and current stress on any semiconductor devices. All semiconductor power devices in the proposed converter are operated by soft switching. The proposed converter is analyzed thoroughly, and the theoretical analyzes are affirmed by an implementation having 300‐VDC input, 20‐VDC output, 75‐W output power, and 150‐kHz switching frequency. The overall hard switching efficiency of the converter is increased from 86.4% to 92.9% by aid of the proposed soft switching snubber cell. Abstract : In this paper, soft switching isolated half bridge converter with a new active snubber cell that using switched capacitor for renewable energy applications is proposed. All semiconductor devices operate by soft switching. The overall efficiency of the converter in hard switching condition is increased from 86.4% to 92.9% thanks to proposed snubber cell.