摘要
载充电机(OBC)是电动汽车(EV)的关键部分,为EV提供充电通道。OBC的前级AC/DC电路采用交错Boost电路进行功率因数校正、控制直流母线电压。后级DC/DC采用隔离型全桥LLC电路对充电电压和充电功率进行控制。对交错Boost变流器的效率进行计算,并对LLC谐振变流器的效率进行优化。开发一台3.3 kW OBC样机,其整机效率高达94.9%,功率因数超过99.5%。交错Boost变流器和LLC谐振变流器的效率分别达到97.7%和97.6%,OBC的功率密度可达1.05 kW/L。
On-board charger(OBC)is a key component of electric vehicle(EV),and supplies the charging access for EV.The fore-stage AC/DC circuit of OBC uses the interleaved Boost converter for power factor correction and DC bus voltage regulation.The post.stage DC/DC converter utilizes the full.bridge LLC resonant converter to control the charging voltage and charging power.The efficiency of the interleaved Boost converter is calculated,and efficiency of the LLC resonant converter is optimized.A 3.3kW OBC prototype was developed,whose overall efficiency and power factor can reach up to94.9% and 99.5% respectively.The efficiency of interleaved Boost converter and LLC resonant converter can reach up to 97.7% and 97.6% respectively.The power density of OBC can reach up to 1.05kW/L.
作者
李静宇
周明
李庚银
LI Jingyu;ZHOU Ming;LI Gengyin(State Key Laboratory of New Energy Power System,North China Electric Power University,Beijing 102206,China)
出处
《现代电子技术》
北大核心
2019年第1期119-123,共5页
Modern Electronics Technique
基金
国家重点研发计划资助项目(2016YFB0900105)
国家自然科学基金重大项目课题(51190103)~~
