电动车用高效率双向DC-DC变换器的设计  

Design of high efficiency bi-directional DC-DC converter for hybrid electric vehicle

作　　者：刘文军[1] 马红波[1] 唐娟 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电源技术》2018年第1期111-113,118,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(51407149;51777176;61733015);中央高校基本科研业务费专项资金(2682015CX023)

摘　　要：针对传统以蓄电池作为动力的电动车存在功率密度小、电池寿命短、动态响应慢的问题,提出了以超级电容加双向DC-DC变换器为辅助动力方案。该方案在弥补电池特性缺陷的同时,提高了整个系统的能源利用率。在介绍了混合动力电动车系统架构的基础上,研究和设计了该系统中的关键部件——双向DC-DC变换器,并分析了其控制策略及模式切换策略。1.5 k W原理样机的实验结果很好地验证了研究方案的有效性。The traditional electric vehicle has problems such as low power density, short battery lifetime and slow dynamic response. In order to solve these limits, the auxiliary power system consisting of supercapacitor and bi-directional DC-DC converter was proposed and developed. The proposed solution not only can make up for the limitations of the single battery structure, but also can improve the energy utilization. On the basis of introducing the system structure of the hybrid electric vehicle, the bi-directional DC-DC converter was studied and designed. The control strategies and mode-switching strategies were discussed. A 1.5 k W prototype was fabricated and tested in the laboratory, and the results show the effectiveness of the proposed solution.

关 键 词：电动车 蓄电池 双向DC-DC变换器 超级电容 

分 类 号：TM46[电气工程—电器]