应用于磁耦合谐振式无线电能传输系统的高效率E类逆变电源设计方法
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摘要
ZVS型E类逆变器被认为是工作效率最高的功率放大器,被广泛用作磁耦合谐振式无线电能传输(MCR-WPT)系统的驱动电源,此系统的效率不仅仅在于电能依托线圈载体无线传输的效率,还在于逆变电源的工作效率。本文通过对ZVS型E类逆变器建模分析,得出其额定最佳工作状态下的输出功率与设计参数、负载间的关系;采用电路互感理论构建E类逆变器驱动的四线圈结构MCR-WPT系统的等效模型,并以驱动电源的额定最佳工作状态为优化目标进行负载匹配,给出电源适应于负载的高效率MCR-WPT系统设计方法。最后通过实验证明了这种方法能够实现发射端逆变电源与接收端负载的高度匹配,系统的输出功率得以显著提升。
As one of the most efficient power amplifiers,the ZVS class-E inverter has been widely used as a driving power source for magnetic coupled resonant wireless power transmission(MCR-WPT) systems.Its efficiency is not only the efficiency of wireless power transmission through coils,but also the efficiency of inverter.The relationship between output power,design parameters and load of ZVS class-E inverter has been obtained under the rated optimal operation mode.Equivalent model of four coil structure MCR-WPT system driven by class-E inverter was established with the theory of circuit mutual inductance,and the load matching was optimized with the rated optimal operation mode of class-E inverter.After that,the design method of high efficiency MCR-WPT system for power supply adapting to load was given.It is proved by experiments that this design method can achieve high matching of the inverter power at the transmitting end and the load at the receiving end,and the output power can be greatly improved.
As one of the most efficient power amplifiers,the ZVS class-E inverter has been widely used as a driving power source for magnetic coupled resonant wireless power transmission(MCR-WPT) systems.Its efficiency is not only the efficiency of wireless power transmission through coils,but also the efficiency of inverter.The relationship between output power,design parameters and load of ZVS class-E inverter has been obtained under the rated optimal operation mode.Equivalent model of four coil structure MCR-WPT system driven by class-E inverter was established with the theory of circuit mutual inductance,and the load matching was optimized with the rated optimal operation mode of class-E inverter.After that,the design method of high efficiency MCR-WPT system for power supply adapting to load was given.It is proved by experiments that this design method can achieve high matching of the inverter power at the transmitting end and the load at the receiving end,and the output power can be greatly improved.
引文
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[2]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,(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,(3):1-13,21.
[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.Yang Qingxin,Zhang Pengcheng,Zhu Lihua,et al.Key fundamental problems and technical bottlenecks of the wireless power transmission technology[J].Transactions of China Electrotechnical Society,2015,30(5):1-8.
[4]张波,疏许健,黄润鸿.感应和谐振无线电能传输技术的发展[J].电工技术学报,2017,32(18):3-17.Zhang Bo,Shu Xujian,Huang Runhong.The development of inductive and resonant wireless power transfer technology[J].Transactions of China Electrotechnical Society,2017,32(18):3-17.
[5]程时杰,陈小良,王军华,等.无线输电关键技术及其应用[J].电工技术学报,2015,30(19):68-84.Cheng Shijie,Chen Xiaoliang,Wang Junhua,et al.Key technologies and applications of wireless power transmission[J].Transactions of China Electrotechnical Society,2015,30(19):68-84.
[6]卢文成,丘小辉,毛行奎.磁谐振无线电能传输系统的最大效率分析[J].电气技术,2015,(4):14-17,21.Lu Wencheng,Qiu Xiaohui,Mao Xingkui.Analysis on maximum efficiency of wireless power transfer via magnetic resonance[J].Electrical Engineering,2015,(4):14-17,21.
[7]唐治德,杨帆,徐阳阳,等.磁耦合谐振式无线电能传输系统功效同步研究[J].电工技术学报,2017,32(21):161-168.Tang Zhide,Yang Fan,Xu Yangyang,et al.Research on power-efficiency synchronization of wireless power transfer via magnetic resonance coupling[J].Transactions of China Electrotechnical Society,2017,32(21):161-168.
[8]丘小辉,卢文成,毛行奎.一种提高PCB线圈的近距离传输效率的方法[J].电气技术,2015,16(11):7-11,15.Qiu Xiaohui,Lu Wencheng,Mao Xingkui.The method for improving the short distance transfer efficiency of PCB coil[J].Electrical Engineering,2015,16(11):7-11,15.
[9]Su Yugang,Zhang Hongyan,Wang Zhihui,et al.Steady-state load identification method of inductive power transfer system based on switching capacitors[J].IEEE Transactions on Power Electronics,2015,30(11):6349-6355.
[10]杨庆新,李阳,尹建斌,等.基于移幅键控的磁耦合谐振式无线电能和信号同步传输方法[J].电工技术学报,2017,32(16):153-161.Yang Qingxin,Li Yang,Yin Jianbin,et al.Wireless synchronous transmission of power and information based on ASK in WPT via coupled magnetic resonances[J].Transactions of China Electrotechnical Society,2017,32(16):153-161.
[11]Sun Yue,Yan Pengxu,Wang Zhihui,et al.The parallel transmission of power and data with the shared channel for an inductive power transfer system[J].IEEE Transactions on Power Electronics,2016,31(8):5495-5502.
[12]Dai Xin,Sun Yue.An accurate frequency tracking method based on short current detection for inductive power transfer system[J].IEEE Transactions on Industrial Electronics,2014,61(2):776-783.
[13]孙跃,张路,王智慧,等.包络调制无线电能传输系统边界条件研究[J].电工技术学报,2017,32(18):26-35.Sun Yue,Zhang Lu,Wang Zhihui,et al.Study on boundary condition of wireless power transfer system based on envelope modulation[J].Transactions of China Electrotechnical Society,2017,32(18):26-35.
[14]Liu Ming,Fu Minfan,Ma Chengbin.Parameter design for a 6.78MHz wireless power transfer system based on analytical derivation of class E currentdriven rectifier[J].IEEE Transactions on Power Electronics,2016,31(6):4280-4291.
[15]Yang J R,Kim J,Park Y J.Class E power amplifiers using high-Q inductors for loosely coupled wireless power transfer system[J].Journal of Electrical Engineering and Technology,2014,9(2):569-575.
[16]Liu Shuangke,Liu Ming,Yang Songnan,et al.Anovel design methodology for high-efficiency currentmode and voltage-mode class-E power amplifiers in wireless power transfer systems[J].IEEE Transactions on Power Electronics,2017,32(6):4514-4523.
[17]肖思宇,马殿光,张汉花,等.耦合谐振式无线电能传输系统的线圈优化[J].电工技术学报,2015,30(增刊1):221-225.Xiao Siyu,Ma Dianguang,Zhang Hanhua,et al.The coil model of coupled magnetic resonance wireless power transmission system[J].Transactions of China Electrotechnical Society,2015,30(S1):221-225.
[18]张军歌,刘宜成,杜玉洁,等.基于改进E类放大器的无线电能传输系统[J].电力电子技术,2016(11):73-74,77.Zhang Junge,Liu Yicheng,Du Yujie,et al.Wireless power transfer system using class E amplifier[J].Power Electronics,2016(11):73-74,77.
[19]丘小辉,卢文成,毛行奎.E类放大电路的并联谐振电容分析[J].电气技术,2015,16(6):52-55,78.Qiu Xiaohui,Lu Wencheng,Mao Xingkui.Parallel resonant capacitor analysis of the class e power amplifier[J].Electrical Engineering,2015,16(6):52-55,78.
[20]杜秀,王健强,程鹏天.磁耦合无线能量传输中耦合模理论和电路理论的对比分析[J].电工技术学报,2013,28(增刊2):7-12.Du Xiu,Wang Jianqiang,Cheng Pengtian.Comparison and analysis results of two kinds of modeling for magnetically coupled wireless power transfer[J].Transactions of China Electrotechnical Society,2013,28(S2):7-12.