99%, 15W/cm3 Capacitively Coupled Modular DCPET for Low-Voltage DC Power Supply Systems

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-05-01 DOI:10.1541/ieejjia.22007740

Keigo Arita, Yusuke Hayashi, Kazuto Takao

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Abstract

A capacitively coupled modular DC-DC power electronic transformer (DCPET) has been proposed. The proposed DCPET consists of capacitively coupled unregulated LLC resonant converter modules; these modules are connected in series-parallel combinations. The capacitive coupling topology is considered to be promising to develop highly efficient high-power-density converter modules, and the series-parallel connection of these modules smoothly achieves various voltage ratios of DCPETs. A trial design for a 48 V-48 V, 450 W capacitively coupled LLC converter module using GaN-FETs has been demonstrated, and the potential to achieve 99%, 15 W/cm3 has been confirmed. Moreover, the 48 V-384 V DCPET using eight 98.8%, 15 W/cm3 converter modules has been demonstrated, and the feasibility of the proposed topology has been verified. The proposed DCPET overcomes the stagnant relationship between the efficiency and the output power density of isolated converters, and the proposed topology contributes to the prevalence of power electronics equipment for the economical use of electric power.

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99%, 15 w / cm 3 & lt; / sup>低压直流电源系统的电容耦合模块化DCPET

提出了一种电容耦合模块化DC-DC电力电子变压器(DCPET)。提出的DCPET由电容耦合无规LLC谐振变换器模块组成;这些模块以串并联方式连接。电容耦合拓扑被认为有望开发出高效的高功率密度变换器模块，并且这些模块的串并联可以顺利实现dcpet的各种电压比。采用gan - fet的48 V-48 V、450 W电容耦合LLC变换器模块的试验设计已被证明，并有可能达到99%，15 W/cm3。此外，还演示了使用8个98.8%，15 W/cm3的转换器模块的48 V-384 V DCPET，并验证了所提出拓扑的可行性。所提出的DCPET克服了孤立变换器的效率和输出功率密度之间的停滞关系，所提出的拓扑结构有助于电力电子设备的普及，以实现电力的经济利用。

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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.

99%, 15W/cm<sup>3</sup> Capacitively Coupled Modular DCPET for Low-Voltage DC Power Supply Systems

Abstract