Improved Burst Mode Operation for DAB Converters to Achieve ZVS in Full-Load-Range by Considering Device Voltage Oscillation

IF 1 4区工程技术 Q4 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Compel-The International Journal for Computation and Mathematics in Electrical and Electronic Engineering Pub Date : 2023-06-25 DOI:10.1109/COMPEL52896.2023.10221120

Cheng Huang, Tomoyuki Mannen, T. Isobe

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引用次数: 1

Abstract

This paper proposes an improved burst mode for dual active bridge (DAB) converters to obtain zero-voltage switching (ZVS) operation over the entire load range. Despite the burst mode can reduce the number of switching and improve the efficiency by introducing non-switching intervals, the conventional burst mode operations fail in the realization of ZVS over the entire load range. The proposed method introduces an oscillation of device voltages which can be resonant to zero during the non-switching interval of the burst mode. The oscillation period is discretely adjusted so that the switching devices can always be turned on at zero voltage even at light-load conditions. As a result, further efficiency improvement can be obtained in the entire load condition with an extended ZVS range. The effectiveness of the proposed method was verified by experiments with a fabricated DAB converter, which consisted of SiC-MOSFETs and was operated at 100-kHz.

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考虑器件电压振荡的DAB变换器实现全负载范围ZVS的改进突发模式操作

提出了一种改进的双有源桥式(DAB)变换器突发模式，使其在整个负载范围内实现零电压开关(ZVS)工作。尽管突发模式通过引入非切换间隔可以减少切换次数，提高效率，但传统突发模式无法实现全负荷范围内的零电压切换。该方法引入了器件电压的振荡，该振荡可以在突发模式的非开关间隔期间谐振到零。振荡周期是离散调节的，因此即使在轻负载条件下，开关器件也能始终在零电压下接通。因此，在整个负载条件下，通过扩大ZVS范围，可以进一步提高效率。实验结果表明，该方法的有效性得到了验证，该转换器由sic - mosfet组成，工作频率为100 khz。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Compel-The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 工程技术-工程：电子与电气

CiteScore

1.60

自引率

0.00%

发文量

124

审稿时长

4.2 months

期刊介绍： COMPEL exists for the discussion and dissemination of computational and analytical methods in electrical and electronic engineering. The main emphasis of papers should be on methods and new techniques, or the application of existing techniques in a novel way. Whilst papers with immediate application to particular engineering problems are welcome, so too are papers that form a basis for further development in the area of study. A double-blind review process ensures the content''s validity and relevance.