储能系统后级隔离变换器移相全桥与LLC谐振损耗分析  

Loss Analysis on Phase-shifted Full Bridge and LLC Resonance of DC/DC Converter in Energy Storage System

作　　者：李恒阳 梁仕斌 耿向瑾 崔海波 靳会宁 周成建 LI Hengyang;LIANG Shibin;GENG Xiangjin;CUI Haibo;JIN Huining;ZHOU Chengjian(Yunnan Electric Test&Research Institute Group Co.,Ltd.Kunming 650217,China)

机构地区：[1]云南电力试验研究院(集团)有限公司

出　　处：《云南电力技术》2019年第6期6-8,13,共4页Yunnan Electric Power

摘　　要：功率变换结构中充放电的效率提高是电池储能系统发展迫切需要解决的问题,不同的PCS系统中包含的DC/DC变换通常有全移相桥变换器与LLC谐振变换器,针对直流充电系统的后级隔离DC/DC变换器的器件损耗分析对比,结果表明LLC谐振变换器能在一定程度上减少损耗,为提高充电系统能量转换效率及设计高功率密度的充电系统提供理论依据。Improving the efficiency of charging and discharging in the power conversion structure is an urgent issue for the development of battery energy storage systems.The DC/DC converters included in different PCS systems usually have full phaseshift bridge converters and LLC resonant converters,analysis and comparison of the device loss of the isolated DC/DC converter of the DC charging system.The results show that the LLC resonant converter can reduce the loss to a certain extent,providing a theory for improving the energy conversion efficiency of the charging system and designing a high power density charging system.

关 键 词：储能系统 移相全桥 LLC谐振 能量变换 

分 类 号：TM74[电气工程—电力系统及自动化]