[1]潘 健,刘松林,宋豪杰,等. LLC谐振变换器变模式-变频混合控制策略[J].湖北工业大学学报,2021,(5):32-36.
　PAN Jian,LIU Songlin,SONG Haojie,et al. Variable Mode and Variable Frequency Hybrid Control Strategy of LLC Resonant Converter[J].,2021,(5):32-36.
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 LLC谐振变换器变模式-变频混合控制策略()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2021年第5期
页码:
32-36
栏目:
湖北工业大学学报
出版日期:
2021-10-31

文章信息/Info

Title:
 Variable Mode and Variable Frequency Hybrid Control Strategy of LLC Resonant Converter
文章编号:
1003-4684(2021)05-0032-05
作者:
 潘 健;  刘松林;  宋豪杰;  石 迪;  熊嘉鑫
 湖北工业大学太阳能高效利用及储能运行控制湖北省重点实验室，电气与电子工程学院， 湖北 武汉 430068
Author(s):
 PAN Jian;  LIU Songlin;  SONG Haojie;  SHI Di;  XIONG Jiaxin
 Hubei Key Laboratory for High-efficiency Utilization of Solar Energy[JZ]and Operation Control of Energy Storage System,[JZ]School of Electrical and Electronic Engin., [JZ]Hubei Univ. of Tech., Wuhan 430068 China
关键词:
谐振变换器;  控制策略;  保持模式;  宽输入;  软开关
Keywords:
 ; resonant converter;  control strategy;  hold-up mode;  wide input;  soft switching
分类号:
TM464
文献标志码:
A
摘要:
 在数据中心、服务器电源应用中，传统频率控制的LLC谐振变换器难以满足宽电压调节和高转换效率需求。针对这一问题提出一种变模式-变频混合控制策略，以实现宽增益范围调节。谐振变换器有两种工作模式，在正常模式下谐振变换器工作在最佳效率点，开关频率等于谐振频率。当交流侧电压丢失时，谐振变换器处于保持工作模式，采用提出的变模式-变频混合控制调节输出电压。与传统频率控制相比，该混合控制策略缩小了频率调节范围，因此可以设计更大的励磁电感来减小开关的关断损耗和导通损耗。通过输入150~400 V、输出12 V、功率为1 kW的MATLAB/Simulink仿真结果验证了混合控制策略的有效性。
Abstract:
 In data center and server power applications, the conventional frequency-controlled LLC resonant converters are difficult to meet the requirements of wide voltage regulation and high conversion efficiency. In this paper, a variable mode and variable frequency hybrid control strategy is proposed to achieve a wide gain regulation range. The resonant converter has two operation modes. In the normal mode, the resonant converter operates at the optimal efficiency point, where the switching frequency is equal to the resonant frequency. When the AC voltage is lost, the resonant converter is in the hold-up mode, and the output voltage is regulated by the proposed variable mode and variable frequency hybrid control. Compared with conventional frequency control, the hybrid control strategy narrows the frequency regulation range, so that a larger magnetizing inductance can be designed to reduce the turn-off and conduction losses of switches. The effectiveness of the hybrid control strategy is verified by the MATLAB/Simulink simulation results of 150~400 V input, 12 V output, and 1 kW power.

参考文献/References:

[1] YANAGI, HIROSHIGE, KOGA, et al. Circuit design techniques for reducing the effects of magnetic flux on GaN-HEMTs in 5-MHz 100-W high power-density LLC resonant DC-DC converters[J]. IEEE Transactions on Power Electronics, 2017, 32(8): 5953-5963.
[2] ZHANG W, WANG F, COSTINETT D J, et al. Investigation of gallium nitride devices in high-frequency LLC resonant converters[J]. IEEE Transactions on Power Electronics, 2017, 32(1):571-583.
[3] 冯兴田,邵康,崔晓, 等. 基于多模态切换的宽电压增益LLC谐振变换器控制策略[J].电工技术学报,2020,35(20):4350-4360.
[4] 杨玉岗,邓申,姚君优.基于全耦合电感器的交错并联LLC谐振变换器均流特性研究[J].电机与控制学报,2020,24(12):86-96.
[5] YANG C, HONGLIANG W, ZHIYUAN H, et al. LCLC converter with optimal capacitor utilization for hold-up mode operation[J]. IEEE Transactions on Power Electronics, 2018, 34(3):2385-2396.
[6] SUN X, LI X, SHEN Y, et al. Dual-Bridge LLC resonant converter with fixed- frequency PWM control for wide input applications[J]. IEEE Transactions on Power Electronics. 2017,32(1):69-80.
[7] KIM B C, PARK K B, MOON G W. Asymmetric PWM control scheme during hold-up time for LLC resonant converter[J]. IEEE Transactions on Industrial Electronics, 2012, 59(7):2992-2997.

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备注/Memo

备注/Memo:
 ［收稿日期］ 2020-04-20
［基金项目］ 太阳能发电及储能运行控制湖北省重点实验室开放基金（HBSEES201902）
［第一作者］ 潘 健(1962-)， 男， 湖北武汉人，湖北工业大学教授，研究方向为电力电子，新能源发电
［通信作者］ 刘松林(1994-)， 男， 湖北黄冈人，湖北工业大学硕士研究生，研究方向为LLC谐振变换器
更新日期/Last Update: 2021-11-01