摘要
针对传统电流型双向变换器存在的低压侧开关高电压尖峰和硬开关现象,提出一种可在全功率范围内实现实际零电压开通(ZVS)的电流型双向隔离DC-DC变换器。该变换器的一次侧Boost半桥能有效抑制开关管的高电压尖峰;二次侧为两个有源半桥并联,通过调整二次侧桥内移相角可改变实现ZVS的反向电流的大小。该变换器通过采用混合移相+脉宽调制(PWM)控制,可使所有开关管在全功率范围内实现实际ZVS。首先,介绍变换器的工作原理;然后,详细分析变换器的功率传输特性和软开关特性;最后,搭建一台30~60V输入、400V/2.5A的实验样机,验证了所提变换器及其控制策略的优势。
In order to suppress the turn-off voltage spike and overcome the hard-switching in traditional current-fed bidirectional converters, this paper presents a novel current-fed bidirectional isolated DC-DC converter with full-operating-range zero-voltage switching（ZVS）. The primary side of the proposed converter is a Boost half bridge, which can decrease the voltage stress on primary side switches. The secondary side of the proposed converter parallels two active half bridges, and the reverse current can be changed by adjusting the phase-shift angle within the secondary side. The converter adopts the hybrid phase shift plus pulse width modulation（PWM） control to make all switches realize ZVS in full operating range. Firstly, the corresponding operating principles are introduced. Then characteristics including the power transfer and soft-switching are investigated in detail. Finally, an experimental prototype with 30-60 V input and 400 V/2.5 A output is built to verify the converter and the control strategy.
作者
孙孝峰
吴晓颖
申彦峰
崔明勇
李昕
Sun Xiaofeng;Wu Xiaoying;Shen Yanfeng;Cui Mingyong;Li Xin(Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province Yanshan University Qinhuangdao 066004 China;College of Life Science and Bio-Engineering Beijing University of Technology Beijing 100124 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第10期2282-2292,共11页
Transactions of China Electrotechnical Society
基金
中国博士后科学基金(2014M550582)
国家自然科学基金(51677162)
河北省自然科学基金(E2015203407
QN20131041)资助项目
