Bidirectional Dual-active DC-DC Converter Based on Traction Auxiliary Power Supply System

2019 IEEE 4th International Future Energy Electronics Conference (IFEEC) Pub Date : 2019-11-01 DOI:10.1109/IFEEC47410.2019.9015035

Weiwei Zhu, Deng Luo, Zeliang Shu

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引用次数: 1

Abstract

The auxiliary power supply system is used to supply the power to the electric equipments, like the lighting and the heating equipments, etc and plays an important role in the normal operation of the Electric Multiple Units (EMU). As to the generalized auxiliary converters, it is difficult to achieve their lightweight design due to their properties of large capacity and volume. To address this issues, an improved auxiliary converter is proposed in this paper, which has the following advantages: 1) The proposed topology directly takes power from the DC high-voltage bus and effectively reduces the conversion order of the entire converter. 2) The charger adopts bidirectional isolated DC-DC converter to realize bidirectional energy transmission, which can overcome the disadvantage that the traditional structure cannot maintain the power supply of the AC bus when the pantograph loses power. In addition, for the DC-DC converter and inverter in this structure, the corresponding mathematical models are established and the related control strategies are applied to ensure the whole system normal operation and finally verified by simulation and experimental results.

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基于牵引辅助供电系统的双向双有源DC-DC变换器

辅助供电系统是为机车的照明、供热等用电设备供电的系统，对机车的正常运行起着重要的作用。对于广义辅助变流器，由于其容量大、体积大的特点，难以实现轻量化设计。针对这一问题，本文提出了一种改进的辅助变换器，其优点如下:1)所提出的拓扑结构直接从直流高压母线取电，有效降低了整个变换器的转换顺序。2)充电器采用双向隔离DC-DC变换器，实现双向能量传输，克服了传统结构在受电弓断电时无法维持交流母线供电的缺点。此外，针对该结构中的DC-DC变换器和逆变器，建立了相应的数学模型，并应用了相应的控制策略，保证了整个系统的正常运行，最后通过仿真和实验结果进行了验证。

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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来源期刊

2019 IEEE 4th International Future Energy Electronics Conference (IFEEC)

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