宽范围CLLLC双向同步整流数字控制方法

doi:10.19595/j.cnki.1000-6753.tces.210152

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摘要为解决车载充电器（OBC）系统的双向CLLLC谐振变换器在宽范围工作条件下效率过低、开关管温度过高等问题,该文提出一种数字同步整流控制方法。该方法以CLLLC拓扑的脉冲频率调制（PFM）控制模式为基础,通过对不同工作频率模态的分析,总结推导同步开关管与主动管驱动时间的关系。在宽电压的调制频率范围内,分别通过分析计算和线性函数分段拟合的方法得到同步管驱动信号的延迟开通和提前关断时间。相较于其他同步整流控制,此方法利用纯数字控制实现,可应用于母线电压变化范围宽的大功率场合,且适用于双向变换器,避免了模拟控制芯片对母线电压变化敏感的缺点,控制方法简单且易于实现,成本更低,设计更简单。最后,搭建了仿真平台和实验样机对所提出的方法进行验证。仿真和实验的结果表明,该策略可以使系统效率最大提升3%左右,且能极大降低开关管温度。

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	廖嘉睿
	杭丽君
	但志敏
	何远彬
	高锦凤

关键词 ：车载充电器, 双向CLLLC变换器, 脉冲频率调制（PFM）, 数字同步整流, 多线性拟合

Abstract：In order to solve the problems of low efficiency and high temperature of the switches under a wide range of working conditions of the bidirectional CLLLC resonant converter, this paper proposes a digital synchronous rectification controller for the rectifier on the secondary side of the high frequency transformer. Based on the pulse frequency modulation (PFM) mode of the CLLLC circuit, the operating mode of different frequencies is analyzed, and the relationship between the driving signal of the synchronous switch and the driving signal of the active device on the primary side of the transformer is obtained. In a wide modulation frequency range, the delayed turn-on time and lead turn-off time of the driving signal for the synchronous devices is obtained respectively by calculation and piecewise linear function fitting methods. Compared with other synchronous rectification control, this method is realized by pure digital control, which can be applied to high-power applications with a wide range of bus voltage variation. Furthermore, this method is suitable for bidirectional converters. and avoids the shortcoming that the analog control chip is sensitive to bus voltage changes. Meanwhile, the proposed control method is simple to implement, and the cost and complexity of circuit can be reduced. Finally, a simulation platform and an experimental prototype were built to verify the proposed method. The results show that this strategy can increase the efficiency of the CLLLC system by about 3%, and can greatly reduce the temperature of the synchronous switches.

Key words： On board charger bidirectional CLLLC converter pulse frequency modulation (PFM) digital synchronous rectification multiple linear fitting

收稿日期: 2021-01-29

PACS:

TM46

基金资助:国家自然科学基金资助项目（51777049, 51707051）

通讯作者: 杭丽君女,1979年生,教授,博士生导师,研究方向为电子与电力传动。E-mail: ljhang@hdu.edu.cn

作者简介: 廖嘉睿男,1997年生,硕士研究生,研究方向为电力电子技术。E-mail: JiaruiLiao@163.com

引用本文:

廖嘉睿, 杭丽君, 但志敏, 何远彬, 高锦凤. 宽范围CLLLC双向同步整流数字控制方法[J]. 电工技术学报, 2022, 37(14): 3632-3642. Liao Jiarui, Hang Lijun, Dan Zhimin, He Yuanbin, Gao Jinfeng. Digital Control Method of Wide-Range CLLLC Bidirectional Synchronous Rectification. Transactions of China Electrotechnical Society, 2022, 37(14): 3632-3642.

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[1] 陈启超. CLLLC谐振型双向DC/DC变换器若干关键问题研究[D]. 哈尔滨: 哈尔滨工业大学, 2015.
[2] 李红梅, 张恒果, 崔超. 车载充电PWM软开关DC-DC变换器研究综述[J]. 电工技术学报, 2017, 32(24): 59-70.
Li Hongmei, Zhang Hengguo, Cui Chao.Review of PWM soft-switching DC-DC converter for on-board chargers[J]. Transactions of China Electrotechnical Society, 2017, 32(24): 59-70.
[3] Qu Lu, Wang Xin, Zhang Donglai, et al.A high efficiency and low shutdown current bidirectional DC-DC CLLLC resonant converter[C]//2019 22nd International Conference on Electrical Machines and Systems (ICEMS), Harbin, China, 2019: 1-6.
[4] 龚思成. 双向CLLLC谐振变换器研究[D]. 南京: 南京航空航天大学, 2019.
[5] 杨玉岗, 武艳秋, 孙晓钰, 等. 交错并联双向CLLC型谐振变换器中U+U型磁集成变压器的设计[J]. 电工技术学报, 2021, 36(2): 282-291.
Yang Yugang, Wu Yanqiu, Sun Xiaoyu, et al.Design of U+U magnetic integrated transformer in interleaved parallel bidirectional CLLC resonant converter[J]. Transactions of China Electrotechnical Society, 2021, 36(2): 282-291.
[6] 沈凯, 童安平, 杭丽君, 等. 应用于可再生能源系统的DAB变换器软开关调制策略[J]. 电力系统自动化, 2019, 43(9): 154-159, 178.
Shen Kai, Tong Anping, Hang Lijun, et al.DAB converter soft switching modulation strategy applied to renewable energy systems[J]. Automation of Elec-tric Power Systems, 2019, 43(9): 154-159, 178.
[7] 高国庆, 雷万钧, 袁晓杰, 等. 双有源全桥变换器全状态离散迭代建模与输出电压纹波分析[J]. 电工技术学报, 2021, 36(2): 330-340.
Gao Guoqing, Lei Wanjun, Yuan Xiaojie, et al.Full-state discrete iterative modeling and output voltage ripple analysis of dual active full-bridge con-verters[J]. Transactions of China Electrotechnical Society, 2021, 36(2): 330-340.
[8] 周兵凯, 杨晓峰, 张智, 等. 能量路由器中双有源桥直流变换器多目标优化控制策略[J]. 电工技术学报, 2020, 35(14): 3030-3040.
Zhou Bingkai, Yang Xiaofeng, Zhang Zhi, et al.Multi-objective optimization control strategy for dual active bridge DC converters in energy routers[J]. Transactions of China Electrotechnical Society, 2020, 35(14): 3030-3040.
[9] 郑诗程, 刘松梅, 王杰, 等. CLLLC谐振式双向全桥DC-DC变换器[J]. 电力系统及其自动化学报, 2019, 31(4): 83-90.
Zheng Shicheng, Liu Songmei, Wang Jie, et al.CLLLC resonant bidirectional full-bridge DC-DC converter[J]. Journal of Electric Power System and Automation, 2019, 31(4): 83-90.
[10] 陈启超, 纪延超, 王建赜. 双向CLLLC谐振型直流变压器的分析与设计[J]. 中国电机工程学报, 2014, 34(18): 2898-2905.
Chen Qichao, Ji Yanchao, Wang Jianzhen.Analysis and design of bidirectional CLLLC resonant DC trans-former[J]. Proceedings of the CSEE, 2014, 34(18): 2898-2905.
[11] Ashrafinia B, Robrecht R, Dahm A, et al.Deve-lopment of bi-directional isolated DC-DC converter for battery test equipment[C]//PCIM Europe 2019, International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nuremberg, Germany, 2019: 1-8.
[12] 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.Opti-mization design of LLC resonant converter efficiency[J]. Proceedings of the CSEE, 2013, 33(18): 48-56.
[13] Ren Xufu, Pei Long, Song Shaojie, et al.A digital sensor-less synchronous rectification algorithm for symmetrical bidirectional CLLC resonant conver-ters[C]//2020 IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, 2020: 962-968.
[14] Yu S, Bhardwaj M, Chen H.A “predictive” syn-chronous rectifier control for high-frequency series resonant converters[C]//2020 IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, 2020: 2254-2259.
[15] 朱黎丽, 张彬. 基于TEA1791A的同步整流电路[J].通信电源技术, 2019, 36(7): 26-27.
Zhu Lili, Zhang Bin.Synchronous rectifier circuit based on TEA1791A[J]. Communication Power Tech-nology, 2019, 36(7): 26-27.
[16] 吴奎. 基于UCD3138的移相全桥同步整流控制策略[J]. 电子世界, 2019(15): 8-10.
Wu Kui.Phase-shifted full-bridge synchronous rectifycati-on control strategy based on UCD3138[J]. Electronic World, 2019(15): 8-10.
[17] 贾海洋, 黄杨涛, 王来利, 等. 高功率密度宽增益CLLC谐振变换器的设计研究[J]. 电力电子技术, 2018, 52(8): 45-47, 51.
Jia Haiyang, Huang Yangtao, Wang Laili, et al.Design and research of CLLC resonant converter with high power density and wide gain[J]. Power Electro-nics Technology, 2018, 52(8): 45-47, 51.
[18] 曹以龙, 帅禄玮. 数字化控制下的CLLC变换器同步整流策略[J]. 上海电力大学学报, 2020, 36(2): 173-178.
Cao Yilong, Shuai Luwei.Synchronous rectification strategy of CLLC converter under digital control[J]. Journal of Shanghai Electric Power University, 2020, 36(2): 173-178.
[19] 刘和平, 陈红岩, 苗轶如, 等. 混合式LLC电路谐振与同步整流数字式控制[J]. 中国电机工程学报, 2015, 35(9): 2272-2278.
Liu Heping, Chen Hongyan, Miao Yiru, et al.Hybrid LLC circuit resonance and synchronous rectification digital control[J]. Proceedings of the CSEE, 2015, 35(9): 2272-2278.
[20] 陈启超, 纪延超, 王建赜, 等. MOSFET输出电容对CLLLC谐振变换器特性影响分析[J]. 电工技术学报, 2015, 30(17): 26-35.
Chen Qichao, Ji Yanchao, Wang Jianzhen, et al.Analysis of the influence of MOSFET output capacitance on the characteristics of CLLLC resonant converters[J]. Transactions of China Electrotechnical Society, 2015, 30(17): 26-35.
[21] Chen Ning, Li Bodong, Wang Xiaoqin, et al.A synchronous rectification scheme based on inductor voltage sensing for CLLC bidirectional resonant converter[C]//2020 IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, 2020: 1713-1719.
[22] 李舒成, 刘邦银, 姜庆, 等. 基于同步PWM控制的双向CLLLC谐振型直流变换器运行特性分析[J]. 电工技术学报, 2019, 34(增刊2): 543-552.
Li Shucheng, Liu Bangyin, Jiang Qing, et al.Analysis of the operating characteristics of a bidirectional CLLLC resonant DC converter based on synchronous PWM control[J]. Transactions of the China Electro-technical Society, 2019, 34(S2): 543-552.
[23] Han Weijian, Mal R, Corradini L.Analysis and design methodology for ZVS phase shift modulated bidire-ctional CLLLC Resonant DC-DC Converters[C]//2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), Genova, Italy, 2019: 1-10.
[24] Zong Sheng, Fan Guoxing, Yang Xiaobo.Double voltage rectification modulation for bidirectional DC/DC resonant converters for wide voltage range operation[J]. IEEE Transactions on Power Electronics, 2019, 34(7): 6510-6521.
[25] 赵烈, 裴云庆, 刘鑫浩, 等. 基于基波分析法的车载充电机CLLC谐振变换器参数设计方法[J]. 中国电机工程学报, 2020, 40(15): 4965-4977.
Zhao Lie, Pei Yunqing, Liu Xinhao, et al.Parameter design method of CLLC resonant converter for vehicle charger based on fundamental wave analysis[J]. Proceedings of the CSEE, 2020, 40(15): 4965-4977.
[26] 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 Jianzhen, Ji Yanchao.Power electronic transformer based on LLC resonant con-verter[J]. Automation of Electric Power Systems, 2014, 38(3): 41-46.