A New Structure of 500W Bidirectional dc-dc Converter with Low Profile in Battery Charging/Discharging System

2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) Pub Date : 2022-06-22 DOI:10.1109/speedam53979.2022.9842273

Seong-Yong Hong, H. Lee, Chan-Bae Park, Jae-Hyeon Lim, Jin-Chul Kim, S. Ryu, Jae-Bum Lee

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Abstract

In this paper, a new structure of bidirectional low dc/dc converter (BLDC) with low profile, i.e., 25mm and without no fan is proposed for direct connection between a battery pack and BLDC converter. For its implementation, the DAB and interleaving converters with 2-stage are adopted.In order to achieve BLDC with low height and high efficiency, the transformer and secondary rectifier in DAB converter are respectively separated into two planar-type transformers with series-connection and two rectifiers with parallel-connection. Moreover, in two interleaving converters, their input/output is connected in parallel and interleaved control is applied. In addition, doubled heat sink structure of paralleled FETs on high current is applied.To verify its performance such as its static/dynamic operations, efficiency, and temperature, a 500W prototype with 650V input and 1V$\sim$5V output was built.

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电池充放电系统中500W低外形双向dc-dc变换器的新结构

本文提出了一种新型的双向低dc/dc变换器(BLDC)结构，其外形为25mm，不带风扇，用于电池组与BLDC变换器的直接连接。在实现上，采用了DAB和2级交错变换器。为了实现低高度高效率的无刷直流，将DAB变换器中的变压器和二次整流器分别分为2台平面型变压器串联和2台整流器并联。此外，在两个交错变换器中，它们的输入/输出并联连接，并应用交错控制。此外，还采用了大电流并联场效应管的双散热器结构。为了验证其静态/动态操作、效率和温度等性能，我们构建了一个500W的原型，输入650V，输出1V / sim / 5V。

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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2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)

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