《推挽正激三电平直流变换器及其控制策略》.pdf
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第29 卷 第30 期 中 国 电 机 工 程 学 报 Vol.29 No.30 Oct. 25, 2009
2009 年10 月25 日 Proceedings of the CSEE ©2009 Chin.Soc.for Elec.Eng. 13
0258-8013 (2009) 30-0013-07 TM 46 A 470 40
文章编号: 中图分类号: 文献标志码: 学科分类号: ⋅
推挽正激三电平直流变换器及其控制策略
王勤,姚志垒,黄勇,肖岚,阮新波
(南京航空航天大学自动化学院,江苏省 南京市 210016)
Push-pull Forward Three-level DC/DC Converter and Its Control Strategy
WANG Qin, YAO Zhi-lei, HUANG Yong, XIAO Lan, RUAN Xin-bo
(College of Automation Engineering, Nanjing University of Aeronautics Astronautics, Nanjing 210016, Jiangsu Province, China)
ABSTRACT: The output voltage of fuel cell varies widely, 0 引言
leading to the difficulty of rectifier diodes selection. This paper
世界经济迅速增长,因此对能源的需求大幅度
proposes a push-pull forward three-level DC/DC converter
提高。化石能源的日益枯竭及其他对人类生存环境
topology which is suitable for the fuel cell with wide range and
的污染等问题的日益严重,激发了人们对新型洁净
low input voltage and high output voltage applications. This
能源的渴望。氢能作为一种洁净能源得到关注,燃
paper proposed a novel control strategy different from the
additional three-level control. The output voltage of rectifier 料电池是氢能应用的一个实例,在分布式发电系
circuit has low level first and high level later. The voltage stress 统、燃料电池汽车、航空航天等领域得到了广泛的
and the volume of the output filter can be reduced. The 应用[1] 。
operation modes of the converter were analyzed. The zero 燃料电池输出电压较低且变化范围很宽。虽然
voltage switching conditions of the power devices that operated 可以通过串联燃料电池单体来增加输出电压,但受
with 0.5 duty cyc
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