电网技术2017，Vol.41Issue(5)：1636-1643,8.DOI:10.13335/j.1000-3673.pst.2016.1819
一种应用于电动汽车快速充电站的高频隔离双级功率变换器
A High-Frequency-Isolation Two-Power-Stage Converter Applied in Electric Vehicle Fast Charging Station
摘要
Abstract
Combining advantages of front-end three-level Buck converter and back-end LLC resonant converter,a novel high-frequency-isolation (HFI) fast-charging DC port with two-power-stage structure is proposed in this paper.LV rating power switches are adopted for half-voltage stress of total DC bus.The proposed system structure can be suitably applied in HV and high power condition.High-frequency electrical isolation is realized with back-end LLC converter with good characteristics of zero-voltage switching (ZVS) for inverter side and zero-current switching (ZCS) for rectifier side.Principles of the proposed fast-charging port topology are studied,and the new features and characteristics are analyzed.Control strategy of constant-current and constant-voltage charging modes are analyzed.Finally,a 20kW prototype with 760V input voltage,200-500V output voltage is built.Experimental results are presented to verify validity of the proposed fast charging DC port system.关键词
电动汽车快速充电站/高频隔离/三电平变换器/LLC谐振变换器Key words
electric-vehicle station/high-frequency-isolation/three-level converter/LLC resonant converter分类
信息技术与安全科学引用本文复制引用
刘闯,李伟,孙佳俊..一种应用于电动汽车快速充电站的高频隔离双级功率变换器[J].电网技术,2017,41(5):1636-1643,8.基金项目
国家自然科学基金资助项目(51307021) （51307021）
吉林省自然科学基金资助项目(20140101076JC) （20140101076JC）
吉林市科学技术局项目(201414002).Project Supported by National Natural Science Foundation of China(NSFC) (51307021) （201414002）
Jilin Province Natural Science Foundation of China(20140101076JC) （20140101076JC）
Jilin Science and Technology Bureau (201414002). （201414002）
