电场耦合式无线电能传输频率分裂特性分析

doi:10.16180/j.cnki.issn1007-7820.2022.06.008

摘要/Abstract

摘要：

针对无线电能传输存在的频率分裂现象以及效率低的问题,文中以双侧LCLC补偿拓扑结构的电场耦合型传能系统作为研究对象,通过系统建模分析易变参数对系统输出的影响规律。利用电路理论推导出系统效率与重要参数之间的关系式,运用MATLAB仿真软件对系统效率进行详细的分析,并采用实验验证了仿真结果的正确性。结果表明,将耦合机构的电容值调到频分点以下可以避免系统出现频率分裂,而固定耦合极板的相对位置,通过把系统的频率调大到效率关键点,可以提高系统效率,系统的最佳效率可达89.4%。

关键词: 电场耦合, 无线电能传输, 对称补偿, 恒流特性, 耦合机构, 参数变化, 频率分裂, 传输效率

Abstract:

In order to solve the problems of frequency splitting and low efficiency in wireless power transfer system, the electrical-field coupled wireless power transfer system with double-side LCLC compensation topology is taken as the research object in this study. The effect laws of variable parameters on the system output are analyzed by system modeling. The relationship between system efficiency and the important parameters is derived using the circuit theory, and the system efficiency is analyzed in detail using MATLAB simulation software. The correctness of simulation results are verified by experiments. The results show that adjusting the capacitance value of the coupling mechanism below the frequency division point can avoid frequency splitting in the system, while fixing the relative position of the coupling plates can improve the system efficiency by increasing the frequency of the system to the critical point of efficiency, and the best efficiency of the system can reach 89.4%.

Key words: electric-field coupling, wireless power transfer, symmetrical compensation, constant current characteristic, coupling mechanism, parameter change, frequency splitting, transmission efficiency

中图分类号:

TN801

杨锐,孙岩洲,余江华,张蒙飞,韦延方. 电场耦合式无线电能传输频率分裂特性分析[J]. 电子科技, 2022, 35(6): 48-53.

YANG Rui,SUN Yanzhou,YU Jianghua,ZHANG Mengfei,WEI Yanfang. Frequency Splitting Characteristics Analysis of Electrical-Field Coupled Wireless Power Transfer[J]. Electronic Science and Technology, 2022, 35(6): 48-53.

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参考文献 22

[1]	孙运全, 顾加亭, 陆洋锐, 等. 基于双边LCC补偿槽恒流恒压输出的无线充电系统研究[J]. 电子器件, 2019, 42(6):1428-1434.
	Sun Yunquan, Gu Jiating, Lu Yangrui, et al. Research on wireless charging system based on constant current and constant voltage outputs for double-sided LCC compensation[J]. Chinese Journal of Electron Devices, 2019, 42(6):1428-1434.
[2]	张茂春, 王进华, 石亚伟. 无线电能传输技术综述[J]. 重庆工商大学学报(自然科学版), 2009, 26(5):485-488.
	Zhang Maochun, Wang Jinhua, Shi Yawei. Review of the wireless power transmission technology[J]. Journal of Chongqing Technology and Business University(Natural Science Edition), 2009, 26(5):485-488.
[3]	Lu F, Zhang H, Hofmann H, et al. A double-sided LCLC-compensated capacitive power transfer system for electric vehicle charging[J]. IEEE Transactions on Power Electronics, 2015, 30(11):6011-6014. doi: 10.1109/TPEL.2015.2446891
[4]	毛云山, 尉旭波. 一种宽频带大动态AGC电路设计[J]. 电子科技, 2021, 34(2):57-61.
	Mao Yunshan, Wei Xubo. Design of a broadband large dynamic AGC circuit[J]. Electronic Science and Technology, 2021, 34(2):57-61.
[5]	程靖宜, 武小兰, 白志峰. 基于耦合系数估计的电动汽车无线电能传输最大效率跟踪[J]. 电子测量与仪器学报, 2020, 34(3):180-186.
	Cheng Jingyi, Wu Xiaolan, Bai Zhifeng. Maximum efficiency tracking of wireless power transfer for electric vehicles based on coupling coefficient estimation[J]. Journal of Electronic Measurement and Instrumentation, 2020, 34(3):180-186.
[6]	焦宇峰, 李锐杰, 宋国兵. 磁耦合谐振无线传输系统传输特性的研究及优化[J]. 电力系统保护与控制, 2020, 48(9):112-120.
	Jiao Yufeng, Li Ruijie, Song Guobing. Research and optimization of transmission characteristics of magnetically coupled resonant wireless transmission system[J]. Power System Protection and Control, 2020, 48(9):112-120.
[7]	刘姜涛, 邓其军. 并联多逆变器驱动的大功率无线电能传输系统研发[J]. 武汉大学学报(工学版), 2020, 53(2):168-175.
	Liu Jiangtao, Deng Qijun. Development of high power wireless power transfer system driven by multiple inverters in parallel[J]. Engineering Journal of Wuhan University, 2020, 53(2):168-175.
[8]	赵争鸣, 张艺明, 陈凯楠. 磁耦合谐振式无线电能传输技术新进展[J]. 中国电机工程学报, 2013, 33(3):1-13.
	Zhao Zhengming, Zhang Yiming, Chen Kainan. New progress of magnetically-coupled resonant wireless power transfer technology[J]. Proceedings of the CSEE, 2013, 33(3):1-13.
[9]	陈希有, 刘玉昆. 具有稳流输出的无线电能传输电路[J]. 电机与控制学报, 2014, 18(8):30-35.
	Chen Xiyou, Liu Yukun. Wireless power transmission circuit with constant current output[J]. Electric Machines and Control, 2014, 18(8):30-35.
[10]	张黎, 方胜伟, 李要东, 等. 新型三线圈磁耦合谐振式无线电能传输系统及其优化[J]. 高电压技术, 2019, 45(4):1146-1152.
	Zhang Li, Fang Shengwei, Li Yaodong, et al. New three-winding magnetic coupling resonant wireless power transmission system and its optimization[J]. High Voltage Engineering, 2019, 45(4):1146-1152.
[11]	张献, 杨庆新, 陈海燕, 等. 电磁耦合谐振式传能系统的频率分裂特性研究[J]. 中国电机工程学报, 2012, 32(9):167-173.
	Zhang Xian, Yang Qingxin, Chen Haiyan, et al. Research on characteristics of frequency splitting in electromagnetic coupling resonant power transmission systems[J]. Proceedings of the CSEE, 2012, 32(9):167-173.
[12]	李新恒, 龚立娇, 冯力, 等. 三线圈磁耦合谐振式无线电能传输系统频率特性分析[J]. 工矿自动化, 2018, 44(3):91-96.
	Li Xinheng, Gong Lijiao, Feng Li, et al. Analysis of frequency characteristics of there-coil magnetic coupling resonant wireless power transmission system[J]. Industry and Mine Automation, 2018, 44(3):91-96.
[13]	李阳, 尹建斌, 杨庆新, 等. 非对称耦合线圈内阻与品质因数对传输功率与效率及其频率分裂的影响[J]. 电工技术学报, 2018, 33(12):2742-2750.
	Li Yang, Yin Jianbin, Yang Qingxin, et al. Influence of internal resistance and quality factor on transfer power and efficiency and frequency splitting[J]. Transactions of China Electrotechnical Society, 2018, 33(12):2742-2750.
[14]	李凤娥, 牛王强. 对称串联型非接触电能传输系统频率分裂现象的频域分析[J]. 上海海事大学学报, 2013, 34(1):90-94.
	Li Feng’e, Niu Wangqiang. Bode frequency analysis for frequency splitting phenomena of symmetrical series-tuned contactless power transfer systems[J]. Journal of Shanghai Maritime University, 2013, 34(1):90-94.
[15]	兰永均, 龚立娇, 蔡新红, 等. 磁耦合谐振式无线电能传输系统频率特性分析[J]. 工矿自动化, 2016, 42(5):67-70.
	Lan Yongjun, Gong Lijiao, Cai Xinhong, et al. Analysis of frequency characteristics of magnetic coupled resonant wireless power transmission system[J]. Industry and Mine Automation, 2016, 42(5):67-70.
[16]	Zhang Y, Zhao Z, Chen K. Frequency splitting analysis of magnetically-coupled resonant wireless power transfer[C]. Denver: Proceedings of the IEEE Energy Conversion Congress & Exposition, 2013.
[17]	刘喜声, 马殿光, 唐厚君. 磁耦合谐振式无线电能传输系统频率特性分析[J]. 电力电子技术, 2014, 48(11):1-2.
	Liu Xisheng, Ma Dianguang, Tang Houjun. Characteristic analysis of frequency model of wireless power transfer via magnetic resonant coupling[J]. Power Electronics, 2014, 48(11):1-2.
[18]	狄东照, 张开如, 顾华利, 等. 小功率磁耦合谐振式无线电能传输频率分裂的研究[J]. 科学技术与工程, 2016, 16(31):188-191.
	Di Dongzhao, Zhang Kairu, Gu Huali, et al. Study on the frequency splitting of the small-power magnetic coupling resonance wireless power transmission[J]. Science Technology and Engineering, 2016, 16(31):188-191.
[19]	路倩云, 王文清, 翟志颖, 等. 三线圈无线输电系统的频率分裂特性和抑制方法[J]. 电气工程学报, 2018, 13(5):27-32.
	Lu Qianyun, Wang Wenqing, Zhai Zhiying, et al. Frequency splitting characteristics and suppression method of three-coil wireless transmission system[J]. Journal of Electrical Engineering, 2018, 13(5):27-32.
[20]	孙跃, 廖志娟, 叶兆虹, 等. 基于振动理论的MCR-WPT系统频率分裂特性研究[J]. 电工技术学报, 2018, 33(13):3140-3148.
	Sun Yue, Liao Zhijuan, Ye Zhaohong, et al. Research on frequency splitting characteristic of MCR-WPT systems based on vibration theory[J]. Transactions of China Electrotechnical Society, 2018, 33(13):3140-3148.
[21]	余江华, 孙岩洲, 韦延方. 电场耦合式无线电能传输系统的功率源设计[J]. 电源学报, 2020, 18(2):191-198.
	Yu Jianghua, Sun Yanzhou, Wei Yanfang. Design of power source for electric-field coupled wireless power transfer system[J]. Journal of Power Supply, 2020, 18(2):191-198.
[22]	陈晓俐, 薛焕杰, 官伯然. 一种宽带高方向性微带定向耦合器[J]. 电子科技, 2021, 34(1):1-4.
	Chen Xiaoli, Xue Huanjie, Guan Boran. A broadband high directional microstrip directional coupler[J]. Electronic Science and Technology, 2021, 34(1):1-4.

参数	数值
V₁(V₂)	55 V
L_f₁(L_f₂)	15 198 nH
C_f₁(C_f₂)	0.91 nF
C₁(C₂)	500 pF
L₁(L₂)	388.14 nH
C_s₁(C_s₂)	200 pF
f_N	13.56 MHz