电动汽车复合能源系统的高效率双向DC-DC变换器的研究  

A Research on the High-efficiency Bidirectional DC-DC Converter of the Hybrid Energy System in Electric Vehicles

作　　者：孙运全[1] 项伟[1] 赵李凤[1] 张华[1] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《汽车工程》2015年第1期21-25,共5页Automotive Engineering

基　　金：中国博士后科学基金(2011491358);国家自然科学基金(51105178)资助

摘　　要：针对电动汽车复合能源系统中使用的传统双向全桥DC-DC变换器存在电流复位时间长和循环能量大的缺陷,提出了一种带非线性电感且采用新颖的移相控制方法的高效率双向DC-DC变换器。采用非线性电感来缩短电流复位时间,并通过控制策略完全消除了循环能量,有效地提高了双向DC-DC变换器的效率。通过Matlab/Simulink仿真,与传统变换器进行了效率比较,验证了该变换器的优越性。In view of the defects of the long current reset time and the large amount of circulating energy of traditional full bridge bi-directional DC-DC converter used in the hybrid energy system of electric vehicles, a high efficiency bi-directional DC-DC converter with nonlinear inductor and novel phase-shift control scheme is proposed, in which nonlinear inductor is adopted for reducing current reset time while the novel control scheme completely e-liminates circulating energy, so effectively enhancing the efficiency of bi-directional DC-DC converter. The results of comparison in efficiency between novel and traditional bi-directional DC-DC converter by Matlab/Simulink simula-tion verify the superiority of the novel converter proposed.

关 键 词：电动汽车 双向DC-DC变换器 非线性电感 循环能量 移相控制 

分 类 号：TM46[电气工程—电器]