多负载多线圈无线电能传输系统各路输出的恒压特性设计
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摘要
在多负载多线圈无线电能传输系统中,非期望耦合线圈之间的磁场交叉耦合导致系统建模复杂以及各路负载恒压设计难以实现。为此,本文提出多层结构的隔离方案以实现非期望耦合线圈间的磁交叉去耦,基于此,给出多路负载无源恒压输出设计。在磁交叉去耦方案中,采用三层结构(铁氧体-铝-铁氧体)的隔离方案对同轴线圈的非期望耦合进行去耦,采用双层结构(铁氧体-铝)实现对非同轴线圈的磁交叉去耦。把所提的磁交叉去耦方案应用到一个三负载六线圈的级联式无线电能传输系统中,系统中非期望耦合线圈间的互感降低至小于原来的6%,而期望耦合线圈间的互感得到一定提升。进一步利用T参数矩阵法设计出无源补偿网络,实现各路负载恒压特性。最后实验结果表明,各路负载在10～100Ω的变化范围内负载的最大电压偏差不超过其设计值的9.3%。
In multi-load and multi-coil wireless power transfer(WPT) systems, the magnetic cross-coupling of transmission coils leads to complex system modeling and multi-load constant voltage design. Therefore, this paper proposes a multi-layer isolating scheme to decouple the unexpected coupling between coils. In the proposed isolating scheme, the sandwich isolating scheme, namely Ferrite-Aluminum-Ferrite, is applied to eliminate the magnetic cross-decoupling of the coaxial coils. In addition, the double-layer isolating scheme, namely Ferrite-Aluminum, is used to eliminate the magnetic cross-coupling of non-coaxial coils. Applying the proposed isolating scheme to a six-coil WPT system with three loads, the mutual inductances of the unexpected coupling coils are reduced to less than 6%, while the mutual inductances of the expected coupling coils have certain enhancement. Furthermore, multi-load constant voltage is achieved by using passive compensated network(PCN) in the proposed WPT system. Lastly, the experimental results show that the maximum output voltage deviation of each load in the range of 10～100Ω is no more than 9.3% of its designed value.
In multi-load and multi-coil wireless power transfer(WPT) systems, the magnetic cross-coupling of transmission coils leads to complex system modeling and multi-load constant voltage design. Therefore, this paper proposes a multi-layer isolating scheme to decouple the unexpected coupling between coils. In the proposed isolating scheme, the sandwich isolating scheme, namely Ferrite-Aluminum-Ferrite, is applied to eliminate the magnetic cross-decoupling of the coaxial coils. In addition, the double-layer isolating scheme, namely Ferrite-Aluminum, is used to eliminate the magnetic cross-coupling of non-coaxial coils. Applying the proposed isolating scheme to a six-coil WPT system with three loads, the mutual inductances of the unexpected coupling coils are reduced to less than 6%, while the mutual inductances of the expected coupling coils have certain enhancement. Furthermore, multi-load constant voltage is achieved by using passive compensated network(PCN) in the proposed WPT system. Lastly, the experimental results show that the maximum output voltage deviation of each load in the range of 10～100Ω is no more than 9.3% of its designed value.
引文
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[14]刘溯奇,谭建平,薛少华,等.多负载无线电能传输系统耦合机理特性分析[J].电力系统自动化,2015,40(18):84-90.Liu Suqi,Tan Jianping,Xue Shaohua,et al.Analysis on coupling mechanism characteristics of multi-load wireless power transmission system[J].Automation of Electric Power Systems,2015,40(18):84-90.
[15]孙跃,李云涛,叶兆虹,等.三线圈ICPT系统中继线圈的位置优化[J].电工技术学报,2016,31(13):164-171.Sun Yue,Li Yuntao,Ye Zhaohong,et al.Optimization for relay coil location of 3-coil inductively coupled power transfer system[J].Transactions of China Electrotechnical Society,2016,31(13):164-171.
[16]耿宇宇,杨中平,林飞,等.基于多接收耦合线圈模式的无线电能传输系统特性分析[J].电工技术学报,2017,32(增刊2):1-9.Geng Yuyu,Yang Zhongping,Lin Fei,et al Characteristic analysis of multiple-receiving coupling coils mode for wireless power transfer systems[J].Transactions of China Electrotechnical Society,2017,32(S2):1-9.
[17]景无为,黄学良,陈琛,等.多组无线电能传输系统间效率影响因素分析[J].电工技术学报,2015,30(14):457-462.Jing Wuwei,Huang Xueliang,Chen Chen,et al.Study on impacts among wireless power transmission multi-system[J].Transactions of China Electrotechnical Society,2015,30(14):457-462.
[18]Huang Shoudao,Li zhongqi,Lu Kaiyuan.Frequency splitting suppression method for four-coil wireless power transfer system[J].IET Power Electronics,2016,9(15):2859-2864.
[19]Wu Jianqing,Sun Yue,Dai Xin.An output control strategy for multiple-pickup WPT system[C]//IEEEPELS Workshop on Emerging Technologies:Wireless Power Transfer,Chongqing,China,2017:1-4.
[20]Fu Minfan,Zhang Tong,Ma Chengbin,et al.Efficiency and optimal loads analysis for multiplereceiver wireless power transfer systems[J].IEEETransactions on Microwave Theory Techniques,201563(3):801-812.
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[22]Ye Zhaohong,Sun Yue,Dai Xin,et al.Energy efficiency analysis of U-coil wireless power transfer system[J].IEEE Transactions on Power Electronics,2016,31(7):4809-4817.
[23]Liu Fuxin,Yang Yong,Jiang Dan,et al.Modeling and optimization of magnetically coupled resonant wireless power transfer system with varying spatial scales[J].IEEE Transactions on Power Electronics,2017,32(4):3240-3250.
[2]黄学良,王维,谭林林.磁耦合谐振式无线电能传输技术研究动态与应用展望[J].电力系统自动化,2017,41(2):2-14,141.Huang Xueliang,Wang Wei,Tan Linlin.Technical progress and application development of magnetic coupling resonant wireless power transfer[J].Automation of Electric Power Systems,2017,41(2):2-14,141.
[3]杨庆新,章鹏程,祝丽花,等.无线电能传输技术的关键基础与技术瓶颈问题[J].电工技术学报,2015,30(5):1-8.Yan Qingxin,Zhang Pengcheng,Zhu Lihua,et al Key fundamental problems and technical bottlenecks of the wireless power transfer technology[J].Transactions of China Electrotechnical Society,2015,30(5):1-8.
[4]徐桂芝,李晨曦,赵军,等.电动汽车无线充电电磁环境安全性研究[J].电工技术学报,2017,32(22):152-157.Xu Guizhi,Li Chenxi,Zhao Jun,et al.Electromagnetic environment safety study of wireless electric vehicle charging[J].Transactions of China Electrotechnical Society,2017,32(22):152-157.
[5]Hui S Y.Planar wireless charging technology for portable electronics products and Qi[J].Proceeding of the IEEE,2013,101(6):1290-1301.
[6]宫飞翔,魏志强,丛艳平,等.植入式医疗设备电磁共振无线能量传输系统天线对人体电磁辐射安全影响的研究[J].中国生物医学工程学报,2016,35(4):497-501.Gong Feixiang,Wei Zhiqiang,Cong Yanping,et al.Research on the effect of antenna electromagnetic radiation to human body safety implantable medical device wireless energy transmission system based on magnetic resonance[J].Chinese Journal of Biomedical Engineering,2016,35(4):497-501.
[7]宋凯,朱春波,李阳,等.基于磁耦合谐振的自主无线充电机器人系统设计[J].电工技术学报,2014,29(9):38-43.Song Kai,Zhu Chunbo,Li Yan,et al.Design and implementation of an autonomous wireless charging robot system using magnetically coupled resonance[J].Transactions of China Electrotechnical Society,2014,29(9):38-43.
[8]Zhou Rui,Chung S H,Zhang Ruihong.An inductive power transfer system for driving multiple OLEDlight panels[J].IEEE Transactions on Power Electronics,2016,31(10):7131-7147.
[9]Narayanamoorthi R,Juliet A V,Chokkalingam B.Frequency splitting-based wireless power transfer and simultaneous propulsion generation to multiple micro-robots[J].IEEE Sensor Journal,2018,18(13):5566-5575.
[10]Zhang Yiming,Lu Ting,Zhao Zhengming,et al.Selective wireless power transfer to multiple loads using receivers of different resonant frequencies[J].IEEE Transactions on Power Electronics,2015,30(11):6001-6005.
[11]王智慧,胡超,孙跃,等.基于输出能效特性的IPT系统磁耦合机构设计[J].电工技术学报,2015,30(19):26-31.Wang Zhihui,Hu Chao,Sun Yue,et al.Design of magnetic coupler for inductive power transfer system based on output power and efficiency[J].Transactions of China Electrotechnical Society,201530(19):26-31.
[12]田子建,林越,杨洪文,等.具有中继谐振线圈的磁耦合谐振无线电能传输系统[J].电工技术学报,2015,30(增刊1):168-174.Tian Zijian,Lin Yue,Yang Hongwen,et al.Magnetic coupling resonance wireless power transmission system with intermediate resonant coil[J].Transactions of China Electrotechnical Society,201530(S1):168-174.
[13]李阳,张雅希,杨庆新,等.磁耦合谐振式无线电能传输系统最大功率效率点分析与实验验证[J].电工技术学报,2016,31(2):18-24.Li Yang,Zhang Yaxi,Yang Qingxin,et al.Analysis and experimental validation on maximum power and efficiency in wireless power transfer system via coupled magnetic resonances[J].Transactions of China Electrotechnical Society,2016,31(2):18-24.
[14]刘溯奇,谭建平,薛少华,等.多负载无线电能传输系统耦合机理特性分析[J].电力系统自动化,2015,40(18):84-90.Liu Suqi,Tan Jianping,Xue Shaohua,et al.Analysis on coupling mechanism characteristics of multi-load wireless power transmission system[J].Automation of Electric Power Systems,2015,40(18):84-90.
[15]孙跃,李云涛,叶兆虹,等.三线圈ICPT系统中继线圈的位置优化[J].电工技术学报,2016,31(13):164-171.Sun Yue,Li Yuntao,Ye Zhaohong,et al.Optimization for relay coil location of 3-coil inductively coupled power transfer system[J].Transactions of China Electrotechnical Society,2016,31(13):164-171.
[16]耿宇宇,杨中平,林飞,等.基于多接收耦合线圈模式的无线电能传输系统特性分析[J].电工技术学报,2017,32(增刊2):1-9.Geng Yuyu,Yang Zhongping,Lin Fei,et al Characteristic analysis of multiple-receiving coupling coils mode for wireless power transfer systems[J].Transactions of China Electrotechnical Society,2017,32(S2):1-9.
[17]景无为,黄学良,陈琛,等.多组无线电能传输系统间效率影响因素分析[J].电工技术学报,2015,30(14):457-462.Jing Wuwei,Huang Xueliang,Chen Chen,et al.Study on impacts among wireless power transmission multi-system[J].Transactions of China Electrotechnical Society,2015,30(14):457-462.
[18]Huang Shoudao,Li zhongqi,Lu Kaiyuan.Frequency splitting suppression method for four-coil wireless power transfer system[J].IET Power Electronics,2016,9(15):2859-2864.
[19]Wu Jianqing,Sun Yue,Dai Xin.An output control strategy for multiple-pickup WPT system[C]//IEEEPELS Workshop on Emerging Technologies:Wireless Power Transfer,Chongqing,China,2017:1-4.
[20]Fu Minfan,Zhang Tong,Ma Chengbin,et al.Efficiency and optimal loads analysis for multiplereceiver wireless power transfer systems[J].IEEETransactions on Microwave Theory Techniques,201563(3):801-812.
[21]Kim J,Kim D H,Park Y J.Analysis of capacitive impedance matching networks for simultaneous wireless power transfer to multiple devices[J].IEEETransactions on Industrial Electronics,2015,62(5):2807-2813.
[22]Ye Zhaohong,Sun Yue,Dai Xin,et al.Energy efficiency analysis of U-coil wireless power transfer system[J].IEEE Transactions on Power Electronics,2016,31(7):4809-4817.
[23]Liu Fuxin,Yang Yong,Jiang Dan,et al.Modeling and optimization of magnetically coupled resonant wireless power transfer system with varying spatial scales[J].IEEE Transactions on Power Electronics,2017,32(4):3240-3250.