[1]赵宝国,李国栋,侯宇琦,等.一种隔离型变结构多谐振直流变换器[J].高压电器,2019,55(09):34-41.[doi:10.13296/j.1001-1609.hva.2019.09.005]
 ZHAO Baoguo,LI Guodong,HOU Yuqi,et al.Isolated Variable Structures Multi-resonant DC Converter[J].High Voltage Apparatus,2019,55(09):34-41.[doi:10.13296/j.1001-1609.hva.2019.09.005]
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一种隔离型变结构多谐振直流变换器()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年09期
页码:
34-41
栏目:
直流变压器专题
出版日期:
2019-09-30

文章信息/Info

Title:
Isolated Variable Structures Multi-resonant DC Converter
作者:
赵宝国1 李国栋2 侯宇琦3 韩富强3 李占纯1
(1. 国网天津市电力公司城西供电分公司, 天津 300190; 2. 国网天津市电力公司电力科 学研究院, 天津 300384; 3. 天津大学智能电网教育部重点实验室, 天津 300072)
Author(s):
ZHAO Baoguo1 LI Guodong2 HOU Yuqi3 HAN Fuqiang3 LI Zhanchun1
(1. State Grid Tianjin Chengxi Electric Power Supply Company, Tianjin 300190, China; 2. State Grid Tianjin Electric Power Company, Tianjin 300384, China; 3. Key Laboratory of Smart Grid of Ministry of Education Tianjin University, Tianjin 300072, China)
关键词:
多谐振变换器 拓扑变换 变拓扑 高效率 高次谐波
Keywords:
multi-resonant converter topological-transformation variable topology high efficiency high-order harmonics
DOI:
10.13296/j.1001-1609.hva.2019.09.005
摘要:
随着直流配用电技术的发展,直流变压器技术开始备受关注,其效率和功率密度是目 前主要的技术难题,为此需要从电力电子功率变换拓扑角度出发研究多工况、宽电压范围适用 的高频、高效软开关拓扑。文中提出了一种可变结构多模式运行的隔离型多谐振直流变换器。 该变换器采用辅助开关控制谐振腔,从而在不同应用场景下表现出自适应谐振特性。当系统输 入电压较低时,采用双变压器多谐振拓扑结构,以获得较高的电压增益;而在额定状态下则采 用五元件多谐振拓扑结构运行,实现高效率。得益于变结构多模式运行拓扑结构,该变换器具 有较宽的电压增益范围,并能够始终保持较高的效率。这些特点使该变换器非常适合应用于直 流配用电系统。文中在电路特性分析的基础上,制作样机并完成了实验验证。输入电压范围为 80~600 V,输出电压为400 V,变换器峰值效率达到97.5%。
Abstract:
With the development of DC power distribution technology, DC transformer has attracted enough attention. Its efficiency and power density are the main technical problems at present. Therefore, based on the power electronic power conversion topology,it is necessary to study high frequency and soft switching topology suitable for multi-operating and wide voltage range conditions. In this paper, an isolated multi-resonant DC/DC converter based on variable structures and multi-mode operations is proposed. The converter uses auxiliary switches to control the resonant tank for exhibiting adaptive resonance characteristics in different application scenarios. When high voltage gain is needed, the dual transformer multi-resonance converter (MRC) topology is adopted, while a five-element MRC topology is required in rated state to achieve high efficiency. Thanks to the variable structure multi-mode operation topology, the converter has a wide voltage gain range and always maintains a high efficiency. These characteristics make the converter very suitable for DC distribution system applications. Finally, the performance of the prototype is tested. The input voltage is from 80 V to 600 V, and the output voltage stays 400 V constantly. The peak efficiency is 97.5% in the whole gain range.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-06-25; 修回日期:2019-08-28赵宝国(1973—),男,硕士,高工,研究方向为电力系统运行与控制研究。 李国栋(1978—),男,工程硕士,教授级高工,研究方向为电能质量分析与控制。 侯宇琦(1996—),女,硕士,研究方向为直流变换器(通信作者)。
更新日期/Last Update: 2019-09-10