摘要
设计了一种新型50 kW电动汽车快速充电桩.提出的快速充电桩分为两个主要部分:执行功率因数校正(PFC)功能的AC-DC转换器和执行充电功能的DC-DC转换器.交直流转换器中采用了漏感变压器;在DC-DC转换器中,采用了一种串联拓扑结构,这种拓扑结构使得DC-DC转换器的功率转换效率高达95%.为了减少充电桩对交流电网的影响,提出的快速充电系统在两个主电源转换单元之间包含一个缓冲电池组.这将降低电力公司的电力安装成本,改善交流电网的电能质量.此外,通过试验验证了所提出的快速充电系统的性能.
A novel 50 kW fast charger is proposed for electric vehicles.The proposed fast charger is divided into two main sections:An AC-DC converter performing a PFC function and a DC-DC converter performing a charging function.A transformer including leakage inductances was used in the AC-DC converter.A series-connection topology was used in the DC-DC converter between the DC-bus and outlet.This topology enables high power conversion efficiency up to 95%for the DC-DC converter.In order to reduce the impact of the charger on the AC grid,the proposed fast charger system includes a buffering battery unit between the two main power conversion units.This leads to reductions in the power installation costs of power companies and to improvements in the power quality on the AC grid.Moreover,the performances of the proposed fast charger system were verified through simulations and experimental results.
作者
应鸿
於国芳
姜涛
吴新刚
张孝杰
田阳
温旭日
宫雷杰
YING Hong;YU Guo-fang;JIANG Tao;WU Xin-gang;ZHANG Xiao-jie;TIAN Yang;WEN Xu-ri;GONG Lei-jie(Zhejiang Huayun Clean Energy Limited Company, Hangzhou 310002, China;Beijing Smart Core Microelectronics Technology Limited Company, Beijing 100089, China)
出处
《陕西科技大学学报》
CAS
2020年第4期147-151,共5页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51637005)
国家电网公司科技计划项目(0111-201805-F-DDQCSYB-0001)。
