摘要
介绍了一种电动汽车充电模块拓扑,该拓扑包括了前级的PWM整流器和后级的谐振变换器。由于电动汽车车载电池的电压变化范围较宽(200～450 V),为了提高全电压范围的转换效率,谐振变换器根据输出电压的变化,分别工作于3种模式:亚谐振频率调频模式、固定开关频率模式和超谐振频率调频模式。分析了3种工作模式的损耗,设计了谐振变换器的主电路参数,并在10 kW实验样机进行了验证。
A topology of EV charger is introduced in this paper,which includes the front-end PWM rectifier and the back-end resonant converter.Since the battery voltage varies in a relatively wider range(200~450 V),in order to improve the conversion efficiency in the full voltage range,the converter operates in three modes according to the change in output voltage,i.e.,below resonant-frequency FM mode,fixed switching frequency mode,and above resonant-frequency FM mode.The loss analysis in these three modes was performed;the parameters of the main circuit in the resonant converter were designed,which were verified on a 10 kW experimental prototype.
作者
邱富君
胡长生
徐德鸿
QIU Fujun;HU Changsheng;XU Dehong(Institute of Power Electronics,Zhejiang University,Hangzhou 310027,China)
出处
《电源学报》
CSCD
北大核心
2018年第6期92-98,共7页
Journal of Power Supply
基金
国家自然科学基金资助项目(51337009)~~
关键词
谐振变换器
宽范围输出
高效率
Resonant converter
Wide output voltage range
High efficiency
