Analysis on Gain Formula and Mode Boundary Condition for LLC Resonant Converter in PO Mode

Shuo LIU; Jianhui SU; Jidong LAI; Jian ZHANG; Haining WANG

doi:10.7500/AEPS20190408002

您当前的位置：

首页 >

文章列表页 >

Analysis on Gain Formula and Mode Boundary Condition for LLC Resonant Converter in PO Mode

Application Research | 更新时间：2020-07-14

- Analysis on Gain Formula and Mode Boundary Condition for LLC Resonant Converter in PO Mode
- Automation of Electric Power Systems Issue 6, Pages: 164-170(2020)
- 作者机构：
  
  合肥工业大学电气与自动化工程学院，安徽省合肥市 230009
- 作者简介：
- 基金信息：
- DOI：10.7500/AEPS20190408002
  CLC：
- Received：08 April 2019，
  
  Revised：2019-09-16，
  
  Published Online：10 January 2020，
  
  Published：25 March 2020
- 稿件说明：
移动端阅览
刘硕,苏建徽,赖纪东等.LLC谐振变换器PO模式增益公式与模式边界条件分析[J].电力系统自动化,2020,44(06):164-170.

LIU Shuo,SU Jianhui,LAI Jidong,et al.Analysis on Gain Formula and Mode Boundary Condition for LLC Resonant Converter in PO Mode[J].Automation of Electric Power Systems,2020,44(06):164-170.
刘硕,苏建徽,赖纪东等.LLC谐振变换器PO模式增益公式与模式边界条件分析[J].电力系统自动化,2020,44(06):164-170. DOI： 10.7500/AEPS20190408002.

LIU Shuo,SU Jianhui,LAI Jidong,et al.Analysis on Gain Formula and Mode Boundary Condition for LLC Resonant Converter in PO Mode[J].Automation of Electric Power Systems,2020,44(06):164-170. DOI： 10.7500/AEPS20190408002.

摘要

电压增益-频率特性的求解是LLC谐振变换器设计的关键。变换器中整流电路存在的非线性使变换器具有多种工作模式，而电压增益-频率特性与工作模式密切相关。PO模式是一种有利于减少变换器开关损耗的断续工作模式，但在该模式下，变换器的增益频率特性计算烦琐，难以求解。文中基于子区间分析法，分析了PO模式下LLC谐振变换器的工作特性，推导了简洁易算且精度较高的电压增益计算公式；依据变换器整流电路的非线性特征，给出了解析且简洁的断续工作模式功率边界条件及PO工作模式功率边界条件的表达式。搭建了LLC谐振变换器的仿真模型和实验样机，仿真和实验结果证实了所提出的电压增益公式及工作模式边界条件的正确性。

Abstract

The calculation of voltage gain-frequency characteristic is vital in the design of LLC resonant converter. The LLC converter have various operation modes due to the existence of nonlinearity in the rectifier part of the converter. And the voltage gain-frequency characteristic is closely related to operation modes. The PO mode is a discontinuous conduction mode (DCM)

which is beneficial to reduce switching losses of the converter. However

the voltage gain-frequency characteristic of converter in the PO mode is hard to be solved because it involves complex computations. On the basis of subinterval analysis method

this paper analyzes the operation characteristics in the PO mode of LLC resonant converter

and deduces a simplified and high-accuracy calculation formula of voltage gain. In addition

the parsing and concise expressions of power boundary conditions both in DCM mode and PO mode are provided according to the nonlinear characteristic in the rectifier part of the converter. Finally

a simulation model and an experimental prototype of LLC converter are developed. The simulation and experiment results verify the validity of the deduced voltage gain formula and power boundary condition.

关键词

Keywords

references

FANG Xiang , HU Haibing , SHEN Z J , et al . Operation mode analysis and peak gain approximation of the LLC resonant converter [J]. IEEE Transactions on Power Electronics , 2012 , 27 ( 4 ): 1985 - 1995 .

顾亦磊，吕征宇，钱照明 . 三电平LLC谐振型DC/DC变换器的分析和设计 [J]. 电力系统自动化 , 2004 , 28 ( 16 ): 67 - 71 .

GU Yilei , LÜ Zhengyu , QIAN Zhaoming . Analysis and design of a three level LLC resonant DC/DC converter [J]. Automation of Electric Power Systems , 2004 , 28 ( 16 ): 67 - 71 .

陈启超 , 王建赜 , 纪延超 . 基于LLC谐振变换器的电力电子变压器 [J]. 电力系统自动化 , 2014 , 38 ( 3 ): 41 - 46 .

CHEN Qichao , WANG Jianze , JI Yanchao . Power electronic transformer based on LLC resonant converter [J]. Automation of Electric Power Systems , 2014 , 38 ( 3 ): 41 - 46 .

王皓 , 朱金大 , 侯凯 , 等 . 基于混合控制式交错并联LLC谐振变换器的充电模块研制 [J]. 电力系统自动化 , 2017 , 41 ( 7 ): 108 - 113 .

WANG Hao , ZHU Jinda , HOU Kai , et al . Development of charging module based on interleaving paralleled LLC resonant converter with hybrid control [J]. Automation of Electric Power Systems , 2017 , 41 ( 7 ): 108 - 113 .

BEIRANVAND R , RASHIDIAN B , ZOLGHADRI M R . Using LLC resonant converter for designing wide-range voltage source [J]. IEEE Transactions on Industrial Electronics , 2011 , 58 ( 5 ): 1746 - 1756 .

BEIRANVAND R , RASHIDIAN B , ZOLGHADRI M R . A design procedure for optimizing the LLC resonant converter as a wide output range voltage source [J]. IEEE Transactions on Power Electronics , 2012 , 27 ( 8 ): 3749 - 3763 .

STEIGERWALD R . A comparison of half-bridge resonant converter topologies [J]. IEEE Transactions on Power Electronics , 1988 , 3 ( 2 ): 174 - 182 .

马皓 , 祁丰 . 一种改进的LLC变换器谐振网络参数设计方法 [J]. 中国电机工程学报 , 2008 , 28 ( 33 ): 6 - 11 .

MA Hao , QI Feng . An improved design method for resonant tank parameters of LLC resonant converter [J]. Proceedings of the CSEE , 2008 , 28 ( 33 ): 6 - 11 .

李菊 , 阮新波 . 全桥LLC谐振变换器的混合式控制策略 [J]. 电工技术学报 , 2013 , 28 ( 4 ): 72 - 79 .

LI Ju , RUAN Xinbo . Hybrid control strategy of full bridge LLC converters [J]. Transactions of China Electrotechnical Society , 2013 , 28 ( 4 ): 72 - 79 .

胡海兵 , 王万宝 , 孙文进 , 等 . LLC谐振变换器效率优化设计 [J]. 中国电机工程学报 , 2013 , 33 ( 18 ): 48 - 56 .

HU Haibing , WANG Wanbao , SUN Wenjin , et al . Optimal efficiency design of LLC resonant converters [J]. Proceedings of the CSEE , 2013 , 33 ( 18 ): 48 - 56 .

王志刚，董长城，侯凯，等 . 全桥LLC电路时域模型及其分析 [J]. 电力系统自动化， 2018 , 42 ( 20 ): 138 - 143 . DOI: 10.7500/AEPS20180128004 http://dx.doi.org/10.7500/AEPS20180128004 .

WANG Zhigang , DONG Changcheng , HOU Kai , et al . Time domain model of full bridge LLC circuit and its analysis [J]. Automation of Electric Power Systems , 2018 , 42 ( 20 ): 138 - 143 . DOI: 10.7500/AEPS20180128004 http://dx.doi.org/10.7500/AEPS20180128004 .

LIU Jianqiang , ZHANG Jiepin , ZHENG T Q , et al . A modified gain model and the corresponding design method for an LLC resonant converter [J]. IEEE Transactions on Power Electronics , 2017 , 32 ( 9 ): 6716 - 6727 .

SHAFIEI N , SAKET M A , ORDONEZ M . Time domain analysis of LLC resonant converters in the boost mode for battery charger applications [C]// IEEE Energy Conversion Congress and Exposition (ECCE) , October 1 - 5 , 2017 , Cincinnati, USA: 4157 - 4162 .

LIU Teng , ZHOU Ziying , XIONG Aiming . et al . A novel precise design method for LLC series resonant converter [C]// Twenty-eighth International Telecommunications Energy Conference , September 10 - 14 , 2006 , Providence, USA: 1 - 6

靳晓光，万兰若，徐军 , 等 . 基于磁放大器的半桥LLC变换器输入电压范围扩展方法 [J]. 电工技术学报 , 2018 , 33 ( 21 ): 5026 - 5035 .

JIN Xiaoguang , WAN Lanruo , XU Jun , et al . Input-voltage extension method of half-bridge LLC converter based on magamp [J]. Transactions of China Electrotechnical Society , 2018 , 33 ( 21 ): 5026 - 5035 .

李瀚荪 . 电路分析基础（中册） [M]. 北京 : 高等教育出版社 , 1993 : 106 - 113 .

LI Hansun . Fundamental circuit analysis [M]. Beijing : Higher Education Press , 1993 : 106 - 113 .

KIM B C , PARK K B , KIM C E , et al . LLC resonant converter with adaptive link-voltage variation for a high-power-density adapter [J]. IEEE Transactions on Power Electronics , 2010 , 25 ( 9 ): 2248 - 2252 .

XU Hengshan , YIN Zhongdong , ZHAO Yushan , et al . Accurate design of high-efficiency LLC resonant converter with wide output voltage [J]. IEEE Access , 2017 , 5 : 26653 - 26665 .

XIE Xiaogao , ZHANG Junming , ZHAO Chen , et al . Analysis and optimization of LLC resonant converter with a novel-current protection circuit [J]. IEEE Transactions of Power Electronics , 2007 , 22 ( 2 ): 435 - 443 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

全桥LLC电路时域模型及其分析

基于混合控制式交错并联LLC谐振变换器的充电模块研制

D-STATCOM的输入-输出反馈线性化滑模变结构控制

基于LLC谐振变换器的电力电子变压器

非线性鲁棒控制调速器的混合仿真实验

Related Author

WANG Zhigang

WANG Hao

GONG Hong

CHEN Qichao

SHAO Yixiang

CAI Weijiang

DING Kai

ZHA Xiaoming

Related Institution

NARI Group Corporation(State Grid Electric Power Research Institute)

School of Electrical Engineering and Information, Sichuan University

School of Electrical Engineering and Automation，Harbin Institute of Technology

State Grid Electric Power Research Institute

⁰