A Two-stage Isolated Dual-output AC-DC Converter Based on Three-port Bridgeless PFC

被引:0
作者
Xu X. [1 ]
Wu H. [1 ]
Jia Y. [1 ]
Xing Y. [1 ]
机构
[1] Center for More Electric Aircraft Power System, Nanjing University of Aeronautics and Astronautics, Nanjing
来源
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 22期
基金
中国国家自然科学基金;
关键词
AC-DC converter; Bridgeless power factor corrector; Dual-DC-bus; Three-port converter;
D O I
10.13334/j.0258-8013.pcsee.200189
中图分类号
学科分类号
摘要
A two-stage isolated dual-output AD-DC converter based on three-port bridgeless power factor corrector (TP-BPFC) and its control method were proposed. With the two DC-buses, i. e. a variable DC voltage bus and a constant DC voltage bus, provided by the TP-BPFC, the total bus voltage is able to follow the variable of the DC output voltage adaptively. Therefore, the voltage gain range of the downstream DC-DC converters is reduced significantly, which can help to improve the efficiency of the downstream DC-DC converters. Topologies of the front-stage TP-BPFC and the downstream dual-input LLC resonant converter were presented. Operation principles of the TP-BPFC were analyzed in detail, and modulation and control strategies were proposed. Experimental results indicate that higher efficiency is achieved with the proposed solutions. © 2020 Chin. Soc. for Elec. Eng.
引用
收藏
页码:7431 / 7439
页数:8
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