| 直流微网中高降压比软开关DC/DC变换器的研究 |
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| 引用本文： | 火彩玲,赵晋斌,屈克庆,李芬. 直流微网中高降压比软开关DC/DC变换器的研究[J]. 上海电力学院学报, 2015, 31(1) |
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| 作者姓名： | 火彩玲 赵晋斌 屈克庆 李芬 |
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| 作者单位： | 上海电力学院 电气工程学院 上海市200090,上海电力学院 电气工程学院 上海市200090,上海电力学院 电气工程学院 上海市200090,上海电力学院 电气工程学院 上海市200090 |
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| 基金项目： | 上海市科委浦江计划（12PJ1403900），上海市教委科创重点项目（13ZZ132）。 |
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| 摘 要： | 针对传统单级DC-DC变换器在分布式电源构成的DC380V直流微电网中变换困难的问题，本文提出了一种具有高降压比特性的新型拓扑，该拓扑利用中间电感和输出侧电感的分压特性，较好地实现了高降压比转换，并利用钳位电容的作用实现电路的软开关动作。本文在分析其基本原理的基础上，给出了一定死区时间内，软开关的实现条件，同时，通过对比介绍了该变换器的优势。最后，通过仿真验证了上述理论分析的正确性。
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| 关 键 词： | 直流微网 DC-DC变换器 非隔离 高压降 软开关(ZVS) |
| 收稿时间： | 2014-06-06 |
| 修稿时间： | 2014-07-03 |
Study on Soft-switching DC-DC Converter with High-Step-Down Ratio in DC Micro-grid |
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| Cailing Huo,Jinbin Zhao,Keqing Qu and Fen Li. Study on Soft-switching DC-DC Converter with High-Step-Down Ratio in DC Micro-grid[J]. Journal of Shanghai University of Electric Power, 2015, 31(1) |
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| Authors: | Cailing Huo Jinbin Zhao Keqing Qu Fen Li |
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| Affiliation: | College of Electrical Engineering,ShangHai University of Electric Power,College of Electrical Engineering,ShangHai University of Electric Power,College of Electrical Engineering,ShangHai University of Electric Power,College of Electrical Engineering,ShangHai University of Electric Power |
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| Abstract: | In view of the problem of traditional single-stage DC-DC converter transform difficult in the 380V DC micro-grid composed of distributed power, this paper proposes a novel topology with the partial pressure characteristics of the middle inductor and output inductor, achieving high-step-down ratio, and using the function of clamping capacitance, achieving the soft-switching. Based on the analysis of its basic principle, this paper gives the soft-switching conditions in the dead time, at the same time , the advantages of the converter are introduced by comparing. Finally, the simulation proves the correctness of theoretical analysis. |
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| Keywords: | DC micro-grid DC/DC converter Non-isolated High step-down ratio Soft-switch Multiple outputs. |
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