A ZCT Double-Ended Flyback Converter with Low EMI

Mohammad Rouhollah Yazdani; Saeid Rahmani; Mehdi Mohammadi

A ZCT Double-Ended Flyback Converter with Low EMI

Mohammad Rouhollah Yazdani

Saeid Rahmani

Mehdi Mohammadi

Vol. 15, No. 3, pp. 602-609, May 2015

10.6113/JPE.2015.15.3.602

Double-ended flyback converter

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Abstract

In this paper, a zero current transition (ZCT) double-ended flyback converter is proposed. All of the switching elements act under soft switching conditions and the voltage stress of the main switches is limited to the input voltage due to the innate behavior of the double-ended flyback converter. Providing soft switching conditions and clamping the voltage stress improves the efficiency and electromagnetic compatibility (EMC). The Proposed converter is analyzed in detail and its operating modes are discussed in detail. Experimental results are presented to verify the theoretical predictions. Moreover, the conducted electromagnetic emissions of the proposed ZCT double-ended flyback converter are measured to show another merit of the proposed converter in addition to providing soft switching conditions. The measured electromagnetic interference (EMI) of the proposed converter demonstrates that its EMI is lower than the conventional double-ended flyback converter. Furthermore, two simple and cost effective EMI reduction methods are applied to satisfy the EMC standard.

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Cite this article

[IEEE Style]

M. R. Yazdani, S. Rahmani, M. Mohammadi, "A ZCT Double-Ended Flyback Converter with Low EMI," Journal of Power Electronics, vol. 15, no. 3, pp. 602-609, 2015. DOI: 10.6113/JPE.2015.15.3.602.

[ACM Style]

Mohammad Rouhollah Yazdani, Saeid Rahmani, and Mehdi Mohammadi. 2015. A ZCT Double-Ended Flyback Converter with Low EMI. Journal of Power Electronics, 15, 3, (2015), 602-609. DOI: 10.6113/JPE.2015.15.3.602.