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[1]朱国荣,陈铭,徐小薇,等.移相全桥变换器中RC缓冲电路对系统影响机理与优化研究 [J].电机与控制学报,2017,21(03):71-77.[doi:10.15938/j.emc.2017.03.010]
 ZHUGuo-rong,CHEN Ming,XUXiao-wei,et al.Mechanism and optimized research on influence of RC snubber circuit in phase-shifted full-bridge ZVS converter [J].,2017,21(03):71-77.[doi:10.15938/j.emc.2017.03.010]
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移相全桥变换器中RC缓冲电路对系统影响机理与优化研究
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年03
页码:
71-77
栏目:
出版日期:
2017-03-01

文章信息/Info

Title:
Mechanism and optimized research on influence of RC snubber circuit in phase-shifted full-bridge ZVS converter
作者:
朱国荣陈铭徐小薇杨志王婷婷黄华芳
?(1.贵州理工学院电气工程学院,贵州贵阳550003;2.武汉理工大学自动化学院,湖北武汉430070; 3.天津科技大学电子信息与自动化学院,天津300222)
Author(s):
?ZHUGuo-rongCHEN Ming XUXiao-wei YANG Zhi WANG Ting-ting HUANG Hua-fang
?(1. College of Electrical Engineering Guizliou Institute of Technology Guiyang 550003 China ; 2. Automation School Wuhan University of Technology Wuhan 430070,China; 3. School of Electronic Information and Automation Tianjin University of Science & Technolog Tianjin 300222,China)

关键词:
移相全桥等效模型RC缓冲电路电压振荡
Keywords:
phase-shifted full-bridge ZVS equivalent circuit model #RC snubbed circuit voltage oscillation
分类号:
TM 131
DOI:
10.15938/j.emc.2017.03.010
文献标志码:
A
摘要:
移相全桥ZVS变换器副边整流二极管电压应力较高,需要设计缓冲电路来保证系统性能。然而,加入RC缓冲电路的变换器在某种工作模式下近似为LCL三阶谐振系统,导致接近开关频率的谐振甚至在整流二极管两侧产生更高的电压应力。通过建立移相全桥ZVS变换器在能量传输模式期间的等效电路模型,揭示RC缓冲电路对系统稳定性产生影响机理及电路参数对振荡的影响规律,通过分析选取合理的RC缓冲电路参数,不仅有效降低整流二极管电压应力,同时抑制由缓冲电路带来的振荡问题,进而提高系统的效率。设计了一个3.2 kW(10 A 320 V)的实验样机,验证了理论分析的正确性。
Abstract:
?There are high voltage stress through rectifier diodes in Phase-sifted full-bridges converter, so snubber circuit is needed to ensure performance of the system. Therefore,converter with RC snubber circuit in some cases becomes third-order unstable system,which leads to resonance close to switching fre-quency and even higher voltage stress through diodes. Equivalent circuit model during the energy transfer mode of phase-shifted full-bridge ZVS converter was established,and mechanism of how the RC circuit effect stability of the system and principle of how circuit parameters affect the oscillation were revealed. By analyzing and selecting appropriate parameters of RC snubber circuit,not only can the voltage stress ofrectifier diodes in the transformer secondary side be inhibited, but also the oscillation brought by RC circuit be solved. In addition the efficiency of the whole system can be Be imported.A prototype of 3.2km(10 A,320 V)was designed to verify the theoretical analysis.


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备注/Memo

备注/Memo:
收稿日期 2015 -05 -18
基金项目:湖北省重大科技创新计划项目(2014AAB007);贵州省科学技术基金 (黔科合 LH字 [2014]7369号 $;天津市科技特派员项目(15JCTPJC63700)
作者简介:朱国荣 (1975—),女 ,博士 ,副教授 ,研究方向为电 力电子变换与控制技术 ;
陈铭(1991一),男,硕士研究生,研究方向为 DC-DC变换;
徐小薇(1991一),女,硕士,研究方向为 DC-DC变换;
杨志(1990—),男,硕士,研究方向为 DC-DC变换;
王婷婷(1975—),女,硕士,副教授,研究方向为智能电力测量技术;
黄华芳(1979—),女,博士,副教授,研究方向为电力电子技术和测控技术。
更新日期/Last Update: 2017-04-01