Design and analysis of LLC resonant converter based on hybrid control

Luo Jirui; Zhang Zhengquan; Liu Qingxiang; Wang Qingfeng; Wang Xuan; Xu Hua

doi:10.11884/HPLPB201931.180280

Volume 31 Issue 1

Jan. 2019

Turn off MathJax

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2019 > 31(1): 015002

Luo Jirui, Zhang Zhengquan, Liu Qingxiang, et al. Design and analysis of LLC resonant converter based on hybrid control[J]. High Power Laser and Particle Beams, 2019, 31: 015002. doi: 10.11884/HPLPB201931.180280

Citation:

Luo Jirui, Zhang Zhengquan, Liu Qingxiang, et al. Design and analysis of LLC resonant converter based on hybrid control[J]. High Power Laser and Particle Beams, 2019, 31: 015002. doi: 10.11884/HPLPB201931.180280

Citation:

PDF( 3044 KB)

Design and analysis of LLC resonant converter based on hybrid control

doi: 10.11884/HPLPB201931.180280

School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2018-10-22
Rev Recd Date: 2018-12-14
Publish Date: 2019-01-15

Abstract

Abstract

A hybrid control method which integrates charge and frequency control methods is adopted based on half-bridge LLC resonant converter. Compared with the current control methods such as charge-type control, dual-frequency control, average current-mode control, PWM-PFM hybrid control and PLL control, this control method can improve the energy transmission efficiency, increase the frequency compensation slope, make the compensator design very simple, improve the transient performance of the line and reduce output capacitor value. According to the equivalent circuit of half-bridge LLC resonant converter obtained by fundamental wave analysis method, the relationship between DC gain and quality factor, normalized frequency resonance and the ratio of inductance to excitation inductance is determined, and appropriate resonant device parameters are designed. A 5 kW/±85 V half-bridge LLC resonant converter is built according to the hybrid control method and the designed LC resonant parameters. The experimental results show that the prototype has good dynamic characteristics and can obtain stable output voltage and high transmission efficiency. The feasibility of the control method and the design of LLC resonant parameters is verified.
- LLC,
- converter,
- charge control,
- frequency control,
- hybrid charge control

FullText(HTML)

References(9)

References

[1]	Yang Bo, Lee F C, Concannon M. Over current protection methods for LLC resonant converter[C]//Applied Power Electronics Conference and Exposition(APEC). 2003, 2: 605-609.
[2]	唐明明. 基于DSP的LLC谐振变换器的研制[D]. 长沙: 中南大学, 2009: 8-27. Tang Mingming. Development of LC resonant converter based on DSP. Changsha: Central South University, 2009: 8-27
[3]	Jiang J H, Kumar P S, Kim D Y, et al. Average current-mode control for LLC series resonant DC-to-DC converter[C]//Power Electronics and Motion Control Conference. 2012, 2: 923-930.
[4]	华秀洁, 许建平, 高建龙, 等. 电荷控制LLC谐振变换器分析与设计[J]. 电力电子技术, 2014, 48(4): 65-67. https://www.cnki.com.cn/Article/CJFDTOTAL-DLDZ201404022.htm Hua Xiujie, Xu Jianping, Gao Jianlong, et al. Analysis and design of charge controlled LLC resonant converter. Power Electronics, 2014, 48(4): 65-67 https://www.cnki.com.cn/Article/CJFDTOTAL-DLDZ201404022.htm
[5]	赵升, 贺明智, 陈章勇, 等. 双频率控制LLC谐振变换器分析与设计[J]. 电力电子技术, 2015, 48(4): 74-76 Zhao Sheng, He Mingzhi, Chen Zhangyong, et al. Analysis and design of dual frequency controlled LLC resonant converter. Power Electronics, 2015, 48(4): 74-76
[6]	Lee R, Ju Weichen. LLC DC/DC resonant converter with PLL control scheme[C]//Applied Power Electronics Conference and Exposition(APEC). 2007: 1537-1543.
[7]	管松敏, 张超, 于锁平, 等. 跟随型PWM控制LLC变换器的分析与实现[J]. 电子电能新技术, 2011, 30(4): 40-45. https://www.cnki.com.cn/Article/CJFDTOTAL-DGDN201104011.htm Guan Songmin, Zhang Chao, Yu Suoping, et al. Analysis and realization of LLC resonant converter with following PWM control strategy. Advanced Technology of Electrical Engineering and Energy, 2011, 30(4): 40-45 https://www.cnki.com.cn/Article/CJFDTOTAL-DGDN201104011.htm
[8]	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. https://www.cnki.com.cn/Article/CJFDTOTAL-DGJS201304010.htm Li Ju, Ruan Xinbo. Hybrid control strategy of full bridge LLC converters. Transactions of China Electrotechnical Society, 2013, 28(4): 72-79 https://www.cnki.com.cn/Article/CJFDTOTAL-DGJS201304010.htm
[9]	管松敏. LLC谐振变换器PWM控制策略和同步整流技术的研究[D]. 南京: 南京航空航天大学, 2012: 30-60. Guan Songmin. Analysis of LLC resonant converter with PWM control strategy and synchronous rectification. Nanjing: Nanjing University of Aeronautics and Astronautics, 2012: 30-60