A high power density and efficiency bi-directional DC/DC converter for electric vehicles
A high power density and efficiency bi-directional DC/DC converter for electric vehicles
复制标题
用于电动汽车的高功率密度和高效率双向 DC/DC 转换器
DOI：
10.1109/icpe.2015.7167885
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Ping
中科院分区：
文献类型：
--
作者：
Xiaoyu Jia;Dehong Xu;Shuailin Du;Changsheng Hu;Min Chen;Ping
在电动车辆系统中，双向DC/DC转换器用于将电池组与逆变器的高压DC总线连接。双向DC/DC变换器要求高功率密度和高效率。讨论了开关频率、电感值与无源器件体积的关系。首先，给出了系统和变换器的拓扑结构。然后，给出了损耗分解模型。提出了开关频率的选择，并提供了电感值的选项，以减小转换器的尺寸并保持转换器的效率。然后讨论了进一步提高功率密度的变换器布局。最后，搭建了一台高功率密度高效率变换器样机，并给出了变换器在不同工况下的效率和热性能评价。
In electric vehicle systems, bi-directional DC/DC converters are used to interface the battery bank with the high voltage DC bus of the inverter. The high power density and high efficiency are required for bidirectional DC/DC converters. This paper discusses the relationship between switching frequency, inductor value and passive components volume. First, the topologies of the system and the converter are presented. Then, the loss breakdown model is provided. A selection for the switching frequency is presented and an option of inductor value is provided to reduce the converter size and to keep the converter efficient. Then the converter layout which further enhances the power density is discussed. Finally, a high power density and high efficiency converter prototype is built, and the efficiency and thermal performance evaluation of the converter at different operating conditions is given.