双向高效准Z源变换器的充电机研究  

A Bi-Directional Quasi-Z Source Converter Based High-Efficiency Electric Vehicle Charger

作　　者：胡龙[1] 罗安[1] 吕志鹏[2] 

机构地区：[1]国家电能变换与控制工程技术研究中心(湖南大学),湖南省长沙市410082 [2]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2014年第2期341-346,共6页Power System Technology

基　　金：国家自然科学基金重点项目(51237003)~~

摘　　要：针对传统电动汽车充电机的结构,提出了一种能量双向流动的车载充电机结构。该结构提供了准阻抗源网络,将变换器主电路和车载装置耦合在一起,克服了传统变换器只能升压或只能降压的不足。针对该结构提出了一种带直通状态的功率前馈无差拍控制策略,该方法实现了系统的快速和无差跟踪。仿真与实验验证了所提结构与方法的有效性。Based on the structure of the charger for traditional electric vehicles （EV）, a structure for vehicular charger, which makes the bidirectional flow of energy possible, is proposed. The proposed structure provides a quasi-Z-source network to couple the main circuit of the converter with vehicular devices, thus the defect of traditional converter that it can only step-up or step-down is remedied. For the proposed structure a power feed-forward dead-beat control strategy, in which the direct connection state is contained, is put forward to implement fast and zero-error tracking of the charger system. The effectiveness of the proposed structure and method are validated by simulation and experimental results.

关 键 词：车载充电机 准阻抗源 功率前馈 无差拍 直通 

分 类 号：TM721[电气工程—电力系统及自动化]