| 高输入输出变比的两级式DC/DC变换器 |
| |
| 引用本文： | 张玄,宁国云,毛康宇,黄声华.高输入输出变比的两级式DC/DC变换器[J].电源技术,2011,35(11). |
| |
| 作者姓名： | 张玄 宁国云 毛康宇 黄声华 |
| |
| 作者单位： | 1. 华中科技大学电气与电子工程学院,湖北武汉,430074
2. 大禹电气科技股份有限公司,湖北孝感,432000 |
| |
| 摘 要： | 两级式变换器比单级式变换器更适合应用在输入输出变比较高的DC/DC变换场合。研究了一种Buck+LLC谐振全桥的电路拓扑,阐述了LLC谐振全桥的原理和特性,在分析了这种两级变换器的稳定性基础上,通过合理选取前级Buck电路的输出电压、后级LLC谐振全桥变压器变比和谐振元件参数,提高了两级变换的效率。基于上述分析,采用该拓扑结构试制了一台功率1 kW,210～270 V输入,27 V输出的原理样机,并给出了实验结果。
|
| 关 键 词： | 两级式变换器 LLC谐振全桥 稳定性分析 |
Two-stage DC/DC converter for high voltage input low voltage output case |
| |
| ZHANG Xuan,NING Guo-yun,MAO Kang-yu,HUANG Sheng-hua.Two-stage DC/DC converter for high voltage input low voltage output case[J].Chinese Journal of Power Sources,2011,35(11). |
| |
| Authors: | ZHANG Xuan NING Guo-yun MAO Kang-yu HUANG Sheng-hua |
| |
| Affiliation: | ZHANG Xuan1,NING Guo-yun2,MAO Kang-yu2,HUANG Sheng-hua1(1.College of Electrical & Electronic Engineering,Huazhong University of Science and Technology,Wuhan Hubei 430074,China,2.Dayu Electrical Technology Co.,Ltd.,Xiaogan Hubei 432000,China) |
| |
| Abstract: | Two-stage converter is more applicable than the single-stage converter for high voltage input low voltage output case.A Buck + LLC resonance full bridge topology was introduced in this paper.The operation principles and the characteristics of the LLC resonance full bridge topology were introduced.Then based on stability analysis of the two-stage converter,a high efficiency was achieved via rationally choosing the output voltage of front stage Buck circuit,the transformer turn ratio and resonance elements va... |
| |
| Keywords: | two-stage converter LLC resonance full bridge stability analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
