26V输出LLC谐振变换器研究  

Research on 26V Output LLC Resonant Converter

作　　者：万志华[1] 张昊东[1] 申宏伟 李信[1] WAN Zhihua;ZHANG Haodong;SHEN Hongwei;LI Xin(Beijing Institute of Space Launch Technology,Beijing 100076,China)

机构地区：[1]北京航天发射技术研究所,北京100076

出　　处：《通信电源技术》2021年第13期12-17,共6页Telecom Power Technology

摘　　要：变换器采用LLC技术可在全负载范围内实现软开关。针对某控制系统供电的应用需求,基于LLC技术,并采用新兴SiC功率MOSFET器件,设计研制了一款26 V输出,额定功率为1 kW的DC/DC谐振变换器,满足变换器高压输入、高开关频率的要求,实现了变换器小型化、高功率密度的设计,同时由于软开关的实现,降低了变换器损耗,最终效率达到94%以上。By adopting LLC technology,soft switch will be achieved at full range load.To satisfy the power supply of a control system,this research take advantage of LLC technology,and make use of the SiC MOSFET,a resonant converter of 26 V direct voltage with 1 kW power output was developed,which meet the condition of high input voltage and high work frequency,achieved the aim of smaller volume and higher power density;at the same time,because of the realization of soft converter,the power loss was reduced,and the efficiency of the converter reach over 94%.

关 键 词：LLC 软开关 高效率 

分 类 号：TM4[电气工程—电器]