An Efficiency Optimization Control Method for Three-Phase Interleaved DC-DC Converter

2021 3rd Asia Energy and Electrical Engineering Symposium (AEEES) Pub Date : 2021-03-26 DOI:10.1109/AEEES51875.2021.9403039

Jinxin Wang, Renyong Peng, Chen Cai, Haitao Yu, Meiyuan Chen, Yiyi Liu, Keqiang Wu, Shihan Tang, Hongyang Wei, Jie Chen

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引用次数: 6

Abstract

Because of the environmental friendliness of electric vehicles, research on electric vehicles has become a hot spot in recent years. How to charge electric vehicles faster is critical to the widespread use of electric vehicles. Electric vehicle integrated power unit can use bidirectional DC-DC converter for driving to achieve integrated charging. In order to improve the power density and efficiency of the integrated system, the bidirectional DC-DC for electric vehicle driving uses three-phase interleaved parallel technology. This paper proposes a method to select different interleaved phase numbers according to different output powers of the converter to improve the working efficiency of three-phase interleaved parallel DC-DC converters. This method improves the efficiency of the three-phase interleaved parallel converter under light load and widens the high-efficiency working area of the converter. Finally, simulations and experimental results are conducted to validate the efficiency of the design.

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三相交错DC-DC变换器效率优化控制方法

由于电动汽车的环保性，近年来电动汽车的研究成为一个热点。如何更快地为电动汽车充电是电动汽车广泛使用的关键。电动汽车集成动力单元可以采用双向DC-DC变换器驱动，实现一体化充电。为了提高集成系统的功率密度和效率，电动汽车驱动的双向DC-DC采用了三相交错并联技术。本文提出了一种根据变换器输出功率的不同选择不同交错相数的方法，以提高三相交错并联DC-DC变换器的工作效率。该方法提高了三相交错并联变流器在轻负荷下的工作效率，拓宽了变流器的高效工作区域。最后通过仿真和实验验证了该设计的有效性。

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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2021 3rd Asia Energy and Electrical Engineering Symposium (AEEES)

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