Research on Soft Switching Technology of Class E Inverter Based on Self Mutual-Inductance Regulation in Wireless Power Transfer
Zhang Shaoteng1, Zhao Jinbin1, Wu Yuebao1, Mao Ling1, Liang Chao2
1. College of Electrical Engineering Shanghai University of Electric Power Shanghai 200082 China; 2. Jiangsu Tenwei Electronic Co. Ltd Huai'an 211600 China
Abstract：In order to solve the problem of hard switching caused by the change of equivalent load in wireless power transmission system based on class E inverter. By considering the coupling relationship between the source and load coils, and analyzing the change characteristics of the equivalent coupling coefficient of multiple transmitting coils, the coil structure of multiple coils in series at the transmitting end is obtained, and the dynamic adjustment of the coupling coefficient and load network parameters is realized. The soft switching effect can be achieved within the range of equivalent load from 0 to 2Ropt (2 times the ideal load). Finally, the feasibility and effectiveness of the method are verified by simulation and experiment.
张少腾, 赵晋斌, 吴月宝, 毛玲, 梁超. 基于自互感调节的无线电能传输用E类逆变器软开关技术研究[J]. 电工技术学报, 2021, 36(21): 4558-4566.
Zhang Shaoteng, Zhao Jinbin, Wu Yuebao, Mao Ling, Liang Chao. Research on Soft Switching Technology of Class E Inverter Based on Self Mutual-Inductance Regulation in Wireless Power Transfer. Transactions of China Electrotechnical Society, 2021, 36(21): 4558-4566.
[1] 黄学良, 谭林林, 陈中, 等. 无线电能传输技术研究与应用综述[J].电工技术学报, 2013, 28(10): 1-11. Huang Xueliang, Tan Linlin, Chen Zhong, et al.Review and research progress on wireless power transfer technology[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 1-11. [2] 吴理豪, 张波. 电动汽车静态无线充电技术研究综述(上篇)[J]. 电工技术学报, 2020, 35(6): 1153-1165. Wu Lihao, Zhang Bo.Overview of static wireless charging technology for electric vehicles: part Ⅰ[J]. Transactions of China Electrotechnical Society, 2020, 35(6): 1153-1165. [3] 麦瑞坤, 陈阳, 张友源, 等. 基于变次级补偿参数的感应式无线充电系统研究[J]. 中国电机工程学报, 2017, 37(11): 3263-3269, 3382. Mai Ruikun, Chen Yang, Zhang Youyuan, et al.Study on secondary compensation capacitor alteration based IPT charging system[J]. Proceedings of the CSEE, 2017, 37(11): 3263-3269, 3382. [4] Fu Minfan, Zhang Tong, Zhu Xinen, et al.Compensation of cross coupling in multiple-receiver wireless power transfer systems[J]. IEEE Transactions on Industrial Informatics, 2016, 12(2): 474-82. [5] 范兴明, 高琳琳, 莫小勇, 等. 无线电能传输技术的研究现状与应用综述(英文)[J]. 电工技术学报, 2019, 34(7): 1353-1380. Fan Xingming, Gao Linlin, Mo Xiaoyong, et al.Overview of research status and application of wireless power transmission technology[J]. Transactions of China Electrotechnical Society, 2019, 34(7): 1353-1380. [6] Li Yang, Dong Weihao, Yang Qingxin, et al.An Automatic impedance matching method based on the feedforward-backpropagation neural network for a WPT system[J]. IEEE Transactions on Industrial Electronics, 2019, 66(5): 3963-3972. [7] 诸嘉慧, 刘之方, 高强, 等. 基于能量流理论的谐振式无线电能传输原理分析与验证[J]. 电工技术学报, 2019, 34(20): 4188-4195. Zhu Jiahui, Liu Zhifang, Gao Qiang, et al.Analysis and verification of energy flow model of magnetic resonant coupled wireless power transfer system[J]. Transactions of China Electrotechnical Society, 2019, 34(20): 4188-4195. [8] 苏玉刚, 谢诗云, 王智慧, 等. 基于F-F/T变结构谐振网络的恒压-恒流型电场耦合电能传输系统[J].电工技术学报, 2019, 34(6): 1127-1136. Su Yugang, Xie Shiyun, Wang Zhihui, et al.An electric-field coupled power transfer system with constant voltage and constant current output based on F-F/T changeable resonant circuit[J]. Transactions of China Electrotechnical Society, 2019, 34(6): 1127-1136. [9] 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, 21. 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, 21. [10] Raab F.Idealized operation of the class E tuned power amplifier[J]. IEEE Transactions on Circuits and Systems, 1977, 24(12): 725-735. [11] Kazimierczuk M, Puczko K.Exact analysis of class E tuned power amplifier at any Q and switch duty cycle[J]. IEEE Transactions on Circuits and Systems, 1987, 34(2): 5907-5917. [12] Oh H, Lee W, Koo H, et al.6.78 MHz wireless power transmitter based on a reconfigurable class-E power amplifier for multiple device charging[J]. IEEE Transactions on Power Electronics, 2020, 35(6): 5907-5917. [13] Fu Minfan, Yin He, Liu Ming, et al.Loading and power control for a high-efficiency class E PA-driven megahertz WPT system[J]. IEEE Transactions on Industrial Electronics, 2016, 63(11): 6867-6876. [14] Liu Ming, Fu Minfan, Ma Chengbin, et al.Parameter design for a 6.78-MHz wireless power transfer system based on analytical derivation of class E current-driven rectifier[J]. IEEE Transactions on Power Electronics, 2016, 31(6): 4280-4291. [15] 苏玉刚, 赵鱼名, 谢诗云, 等. 电场耦合无线电能传输系统负载软切换控制技术[J]. 电工技术学报, 2017, 32(18): 44-51. Su Yugang, Zhao Yuming, Xie Shiyun, et al.Control of load soft-switched for electric-field coupled power transfer system[J]. Transactions of China Electrotechnical Society, 2017, 32(18): 44-51. [16] Kazimierczuk M K, Bui X T.Class E DC/DC converters with an inductive impedance inverter[J]. IEEE Transactions on Power Electronics, 1989, 4(1): 124-135. [17] 黄晓生, 陈为, 陈庆彬. 用于WPT的双路E类逆变器功率合成拓扑及其电感耦合集成[J].中国电机工程学报, 2015, 35(21): 5577-5584. Huang Xiaosheng, Chen Wei, Chen Qingbin.Topology of the power combination with dual class E inverters and magnetics integration of coupled inductors for WPT applications[J]. Proceedings of the CSEE, 2015, 35(21): 5577-5584. [18] Aldhaher S, Luk P C, Whidborne J F.Tuning class E inverters applied in inductive links using saturable reactors[J]. IEEE Transactions on Power Electronics, 2014, 29(6): 2969-2978. [19] Ayachit A, Corti F, Reatti A, et al.Zero-voltage switching operation of transformer class-E inverter at any coupling coefficient[J]. IEEE Transactions on Industrial Electronics, 2019, 66(3): 1809-1819. [20] Aldhaher S, Yates D C, Mitcheson P D.Load-independent class E/EF inverters and rectifiers for MHz-switching applications[J]. IEEE Transactions on Power Electronics, 2018, 33(10): 8270-8287. [21] Roslaniec L, Jurkov A S, Bastami A A, et al.Design of single-switch inverters for variable resistance/load modulation operation[J]. IEEE Transactions on Power Electronics, 2015, 30(6): 3200-3214. [22] Suetsugu T, Kazimierczuk M K.Design procedure of class-E amplifier for off-nominal operation at 50% duty ratio[J]. IEEE Transactions on Circuits and Systems I: Regular Papers, 2006, 53(7): 1468-1476.
2021, Vol. 36 
