An isolated-boost-converter-based unidirectional three-phase off-board fast charger for electric vehicles

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-10-28 DOI:10.1049/els2.12039

Ahmed Elserougi, Ibrahim Abdelsalam, Ahmed Massoud

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引用次数: 7

Abstract

In this work, a novel three-phase unidirectional off-board Electric Vehicles (EVs) fast charger is proposed. Each phase of the proposed converter consists of a two-stage converter. The first stage is an AC–DC front-end converter with power factor correction (PFC) control. The front-end AC–DC converter is based on an isolated boost converter, which has a boosting capability and provides galvanic isolation. In this stage, parallel-in parallel-out isolated boost converter modules are employed in each phase. This enables sharing the current among modules to avoid implementing one module with a high current rating to meet the fast-charging requirements. The multimodule option provides fault-ride through capability for the proposed charger. The DC outputs of involved phases, that is, three isolated DC voltages, are fed to three cascaded DC–DC unidirectional buck converters. The charging terminals are used to charge the EV battery through a filter inductor with a charging current controller's aid. A detailed illustration of the suggested closed-loop controllers is presented to ensure a successful operation for the proposed architecture. A simulation case study for a 25-kW charger is presented. Finally, a 1-kW prototype is implemented for experimental validation.

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一种基于隔离升压变换器的电动汽车单向三相车载快速充电器

本文提出了一种新型的三相单向车载电动汽车快速充电器。所提出的变换器的每一相位由一个两级变换器组成。第一级是带功率因数校正(PFC)控制的AC-DC前端转换器。前端AC-DC转换器基于隔离升压转换器，具有升压能力并提供电流隔离。在这一阶段，在每一阶段都采用并入并出隔离升压转换器模块。这样可以实现模块之间的电流共享，避免为了满足快速充电的要求而实现一个高额定电流的模块。多模块选项为拟议的充电器提供故障穿越能力。相关相位的直流输出，即三个隔离的直流电压，被馈送到三个级联的DC - DC单向降压变换器。充电端子通过滤波电感器在充电电流控制器的辅助下对电动汽车电池进行充电。为了确保所提出的体系结构能够成功运行，给出了所建议的闭环控制器的详细说明。给出了一个25kw充电器的仿真案例研究。最后，实现了一个1千瓦的样机进行实验验证。

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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.