A Flexible Variable-mode Control Method for Wide-range Full-bridge LLC Converter

被引：0
|
作者：
Miao Z. [1 ]
Tong H. [1 ]
Yao W. [1 ]
Lyu Z. [1 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2022年 / 42卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Flexible variable-mode; LLC converter; Wide gain range; Zero-voltage switching;
D O I：
10.13334/j.0258-8013.pcsee.210211
中图分类号：
学科分类号：
摘要：
A flexible variable-mode wide gain range control strategy was proposed for the full-bridge LLC converter. This article discussed the state analysis model of full bridge LLC, sub-mode control principles, and established a digital-aided design platform. These theories and tools laid the foundation for the follow-up works. Aiming at the deficiencies of the existing full-bridge LLC converters of independent sub-mode logic and limited overall gain range, a smooth and flexible variable-mode control strategy combining full-bridge frequency control, asymmetric phase shift control and DPWM control was proposed. The working characteristics of each sub-mode, the technical issues and design points, such as the matching of the working machine and the state transition process, were explained in detail. The prototype experiment proves that the proposed method allows the full-bridge LLC converter to achieve an extremely wide gain range, and ensure the zero-voltage switching and hence high operating efficiency in the full operating range. © 2022 Chin. Soc. for Elec. Eng.
引用
收藏
页码：747 / 760
页数：13
相关论文
共 23 条
  • [1] HAGA H, KUROKAWA F., Modulation method of a full-bridge three-level LLC resonant converter for battery charger of electrical vehicles, IEEE Transactions on Power Electronics, 32, 4, pp. 2498-2507, (2017)
  • [2] MAYER R, El KATTEL M B, OLIVEIRA S V G., Multiphase interleaved bidirectional DC/DC converter with coupled inductor for electrified-vehicle applications, IEEE Transactions on Power Electronics, 36, 3, pp. 2533-2547, (2021)
  • [3] LIANG Yongliang, WU Yuebin, MA Zhao, Et al., Application and development prospect of new generation of LVDC supply and utilization system in "new infrastructure, Proceedings of the CSEE, 41, 1, pp. 13-24, (2021)
  • [4] YU Zhiyuan, WU Hongfei, HUA Wenmin, Et al., A LLC resonant converter with matrix-transformer and phase-shift control for wide voltage range applications, Proceedings of the CSEE, 39, 12, pp. 3638-3646, (2019)
  • [5] YUAN Yisheng, LAI Li, A compound resonant full-bridge converter suitable for wide range output, Proceedings of the CSEE, 40, 20, pp. 6694-6704, (2020)
  • [6] FEI Chao, Li Qiang, LEE F C., Digital implementation of adaptive synchronous rectifier (SR) driving scheme for high-frequency LLC converters with microcontroller, IEEE Transactions on Power Electronics, 33, 6, pp. 5351-5361, (2018)
  • [7] YUAN Yisheng, MEI Xianglong, JI Pengyuan, A Boost-LCL resonant converter, Proceedings of the CSEE, 39, 7, pp. 2166-2174, (2019)
  • [8] SUN Xiaofeng, Li Xiaohua, SHEN Yanfeng, Et al., Dual-bridge LLC resonant converter with fixed-frequency PWM control for wide input applications, IEEE Transactions on Power Electronics, 32, 1, pp. 69-80, (2017)
  • [9] JEONG Y, KIM J K, LEE J B, Et al., An asymmetric half-bridge resonant converter having a reduced conduction loss for DC/DC power applications with a wide range of low input voltage, IEEE Transactions on Power Electronics, 32, 10, pp. 7795-7804, (2017)
  • [10] SUN Xiaofeng, SHEN Yanfeng, ZHU Yune, Et al., Interleaved Boost-integrated LLC resonant converter with fixed-frequency PWM control for renewable energy generation applications, IEEE Transactions on Power Electronics, 30, 8, pp. 4312-4326, (2015)
123