电工技术学报  2019, Vol. 34 Issue (16): 3366-3372    DOI: 10.19595/j.cnki.1000-6753.tces.L80103
电力电子 |
一种高频高升压比改进型Sepic变换器
高珊珊, 王懿杰, 徐殿国
哈尔滨工业大学电气工程系 哈尔滨 150001
A High Frequency High Voltage Gain Modified Sepic Converter
Gao Shanshan, Wang Yijie, Xu Dianguo
Department of Electrical Engineering Harbin Institute of Technology Harbin 150001 China
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摘要 随着对高电压增益特性需求的不断增长,传统Boost电路由于过大的占空比已不再适用。该文在传统Sepic电路的基础上,通过两个二极管、三个电容和一个变压器的集成,提出了一种改进型Sepic变换器。通过采用平面磁性元件,磁心的体积不会增加,同时获得了较高的电压增益和较低的电压应力。此外,实现了开关管的零电压开通(ZVS),有效降低了由开关频率的增加而带来的开关损耗。详细介绍所提变换器的工作原理和参数设计过程,并制作了80W的样机,验证理论分析的准确性,满载时效率可达到92.6%。
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关键词 高频高升压比低电压应力软开关Sepic    
Abstract:With the demand of high voltage gain characteristic, traditional boost circuit is no longer suitable due to its extreme duty ratio. In this paper, a 1MHz modified SEPIC converter was presented by integrating two diodes, three capacitors and a transformer. By using planer magnetic components, the core volume does not increase. Higher voltage gain and lower voltage stress are obtained simultaneously. Moreover, zero voltage switching (ZVS) is achieved at the same time, which reduces the switching loss caused by the increase of switching frequency. The operational principle and parameter design process are introduced in detail. An 80W prototype has been designed to demonstrate theoretical analysis. The obtained efficiency can reach 92.6% at full load.
Key wordsHigh frequency    high voltage gain    low voltage stress    soft switching    Sepic   
收稿日期: 2018-06-22      出版日期: 2019-09-02
PACS: TM46  
基金资助:国家重点研发计划项目专项资助项目(2017YFB0402800)
通讯作者: 王懿杰 男,1982年生,教授,博士生导师,研究方向为高频、超高频功率变换器及无线电能传输技术。E-mail: wangyijie@hit.edu.cn   
作者简介: 高珊珊 女,1992年生,博士研究生,研究方向为高频功率变换器。E-mail: gaoshanshanhit@163.com
引用本文:   
高珊珊, 王懿杰, 徐殿国. 一种高频高升压比改进型Sepic变换器[J]. 电工技术学报, 2019, 34(16): 3366-3372. Gao Shanshan, Wang Yijie, Xu Dianguo. A High Frequency High Voltage Gain Modified Sepic Converter. Transactions of China Electrotechnical Society, 2019, 34(16): 3366-3372.
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