Operation Characteristics of Discontinuous Current Mode for a Dual-Active-Bridge AC-DC Converter with an Active Energy Buffer

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-09-01 DOI:10.1541/ieejjia.22004964

Shohei Komeda, Shunsuke Takuma, Yoshiya Ohnuma, Ryo Gondo, Daisuke Maezaki, Noritaka Taguchi

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Abstract

This paper discusses operation characteristics of discontinuous current mode (DCM) for an ac-dc isolated converter for on-board battery chargers of electric vehicles. The converter discussed in this paper consists of a front-end diode- bridge rectifier, an active energy buffer, and a dual-active-bridge dc-dc converter. The energy buffer circuit absorbs the power pulsation from the single-phase ac line into a small-rated capacitor, and thus, makes it possible to reduce a required capacitance of the dc-link capacitor. This paper explains details of the DCM control method including a technique of the ripple cancel of the inductor current, to realize the power factor correction of the line current and the voltage control of the buffer capacitor at the same time without complex calculations. Then, a reference value of the inductor current and an operation range of the dc-output voltage are discussed. Experimental results obtained by a 220-V, 6.6-kW experimental setup demonstrate a sinusoidal-line current and a controlled buffer capacitor voltage as well as a smoothed dc-output current.

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带有源能量缓冲器的双有源桥式交直流变换器断续电流模式的工作特性

讨论了一种用于电动汽车车载电池充电器的交直流隔离变换器的断续电流模式(DCM)工作特性。本文讨论的变换器由前端二极管-桥式整流器、有源能量缓冲器和双有源桥式dc-dc变换器组成。能量缓冲电路将来自单相交流线路的功率脉动吸收到小额定电容器中，从而可以降低直流链路电容器所需的电容。本文详细介绍了DCM控制方法，包括电感电流纹波消除技术，在不需要复杂计算的情况下，实现对线路电流的功率因数校正和对缓冲电容的电压控制。然后，讨论了电感电流的参考值和直流输出电压的工作范围。通过220v, 6.6 kw的实验装置获得的实验结果显示了正弦线电流和可控缓冲电容器电压以及平滑直流输出电流。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.