基于电场耦合式电能传输系统的电能与信号回路分离式并行传输技术
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摘要
在电能与信号并行传输过程中,为了降低电能传输与信号传输间的相互串扰及信号通道的复杂度,提出一种基于电场耦合式电能传输系统(ECPT)的电能与信号回路分离式并行传输方法,并给出系统的拓扑;基于交流阻抗法建立所述系统的数学模型,并给出电能传输增益、信号传输衰减以及电能串扰的数学表达式,在此基础上给出系统参数设计方法。该方法通过建立相对独立的电能与信号传输回路并依靠其自身阻抗特性,在不改变电能传输能力的前提下可减小电能传输对信号传输的串扰,并降低电路复杂度。通过仿真和实验验证了该方法的有效性,搭建的系统实验装置可实现在1.2~115.2 kbit/s范围内的电能与信号并行传输。
This paper proposes an electric-field coupled power and signal transfer technology based on separated circuit loops and gives the system topology, to reduce the crosstalk between power transmission and signal transmission and the complexity of signal circuit loop during the power and signal parallel transfer process. Based on AC impedance method, this paper sets up the math model of system, then gives the expressions of power transmission gain, signal transmission attenuation and power crosstalk, finally proposes a parameter design method. Without changing the power transmission capability, this method reduces the power crosstalk and complexity of circuit through setting up two relative independent power and signal circuit loops and utilizing its own impedance characteristic. Both simulation and experimental results verify the proposed method. The experiment device can realize parallel transmission of power and signal, and the baud rate of signal transmission is between 1.2 kbit/s and 115.2 kbit/s.
This paper proposes an electric-field coupled power and signal transfer technology based on separated circuit loops and gives the system topology, to reduce the crosstalk between power transmission and signal transmission and the complexity of signal circuit loop during the power and signal parallel transfer process. Based on AC impedance method, this paper sets up the math model of system, then gives the expressions of power transmission gain, signal transmission attenuation and power crosstalk, finally proposes a parameter design method. Without changing the power transmission capability, this method reduces the power crosstalk and complexity of circuit through setting up two relative independent power and signal circuit loops and utilizing its own impedance characteristic. Both simulation and experimental results verify the proposed method. The experiment device can realize parallel transmission of power and signal, and the baud rate of signal transmission is between 1.2 kbit/s and 115.2 kbit/s.
引文
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[23]王焕菊,赵秋宇,王奎甫,等.基于复调制解调的MSK的实现方法[J].电力系统保护与控制,2008,36(15):23-26.Wang Huanju,Zhao Qiuyu,Wang Kuifu,et al.The implementation of MSK based on complex modulation and complex demodu Iation[J].Power System Protection and Control,2008,36(15):23-26.
[24]黄银龙,蔡伟,毛涛,等.具有格状网的电力线载波通信信道特性的分析[J].电力系统保护与控制,2014,42(11):1-6.Huang Yinlong,Cai Wei,Mao Tao,et al.Analysis of power-line communication channel characteristic of the network with mesh topology[J].Power System Protection and Control,2014,42(11):1-6.
[25]蔡伟,乐健,靳超,等.电力线载波通信信道建模技术综述[J].电力系统保护与控制,2012,40(10):149-154.Cai Wei,Le Jian,Jin Chao,et al.Overview of the channel modeling methods of power-line carrier communication[J].Power System Protection and Control,2012,40(10):149-154.
[26]Wang C S,Covic G,Stielau O H.Power transfer capability and bifurcation phenomena of loosely coupled inductive power transfer systems[J].IEEE Transactions on Industrial Electronics,2004,51(1):148-157.
[2]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.
[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]张剑韬,朱春波,雷阳,等.无线电能传输感性系统特性分析[J].电工技术学报,2015,30(增刊1):303-307.Zhang Jiantao,Zhu Chunbo,Lei Yang,et al.Study on the character of wireless power transfer inductive system[J].Transactions of China Electrotechnical Society,2015,30(S1):303-307.
[5]戴卫力,费峻涛,肖建康,等.无线电能传输技术综述及应用前景[J].电气技术,2010,11(7):1-6.Dai Weili,Fei Juntao,Xiao Jiankang,et al.An overview and application prospect of wireless power transmission technology[J].Electrical Engineering,2010,11(7):1-6.
[6]Su Y G,Zhang H Y,Wang Z H,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.
[7]徐健.电场耦合型无线电能传输系统拓扑研究及调谐控制[D].重庆:重庆大学,2014.
[8]苏玉刚,谢诗云,呼爱国,等.LCL复合谐振型电场耦合式无线电能传输系统传输特性分析[J].电工技术学报,2015,30(19):55-60.Su Yugang,Xie Shiyun,Hu Aiguo,et al.Transmission property analysis of electric-field coupled wireless power transfer system with LCL resonant network[J].Transactions of China Electrotechnical Society,2015,30(19):55-60.
[9]Theodoridis M P.Effective Capacitive Power Transfer[J].IEEE Transactions on Power Electronics,2012,27(12):4906-4913.
[10]Liu C,Hu A P,Nair N K C.Modelling and analysis of a capacitively coupled contactless power transfer system[J].IET Power Electronics,2011,4(7):808-815.
[11]曹玲玲,陈乾宏,任小永,等.电动汽车高效率无线充电技术的研究进展[J].电工技术学报,2012,27(8):1-13.Cao Lingling,Chen Qianhong,Ren Xiaoyong,et al.Review of the efficient wireless power transmission technique for electric vehicles[J].Transactions of China Electrotechnical Society,2012,27(8):1-13.
[12]Hu Aiguo Partrick,Liu Chao,Li H L.A novel contactless battery charging system for soccer playing robot[C]//International Conference on Mechatronics and Machine Vision in Practice,Auckland,New Zealand,2008:646-650.
[13]辛文辉,曹忠鲁,辛亚娟,等.植入式医学装置电场耦合式电能传输新方法[J].仪器仪表学报,2015,36(8):1816-1821.Xin Wenhui,Cao Zhonglu,Xin Yajuan,et al.Novel wireless power transfer method based on electricalfield coupling for implantable medical devices[J].Chinese Journal of Scientific Instrument,2015,36(8):1816-1821.
[14]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.
[15]苏玉刚,陈苓芷,唐春森,等.基于NSGA-II算法的ECPT系统PID参数寻优及输出稳压控制[J].电工技术学报,2016,31(19):106-114.Su Yugang,Chen Lingzhi,Tang Chunsen,et al.Evolutionary multi-objective optimization of PID parameters for output voltage regulation in ECPT system based on NSGA-II[J].Transactions of China Electrotechnical Society,2016,31(19):106-114.
[16]王智慧,吕潇,孙跃,等.谐振式无线电能传输系统损耗模型[J].电工技术学报,2014,29(9):17-21.Wang Zhihui,LüXiao,Sun Yue,et al.Modeling of power loss in resonant wireless power transfer system[J].Transactions of China Electrotechnical Society,2014,29(9):17-21.
[17]Sato F,Nomoto T,Kano G,et al.A new contactless power-signal transmission device for implanted functional electrical stimulation(FES)[J].IEEE Transactions on Magnetics,2004,40(4):2964-2966.
[18]Son Y H,Jang B J.Simultaneous data and power transmission in resonant wireless power system[C]//Asia-Pacific Microwave Conference Proceedings.IEEE,Seoul,South Korea,2013:1003-1005.
[19]Su Yugang,Zhou Wei,Hu Aiguo Patrick,et al.Full-duplex communication on the shared channel of a capacitively coupled power transfer system[J].IEEE Transactions on Power Electronics,2016,32(4):3229-3239.
[20]苏玉刚,周玮,呼爱国,等.基于方波载波占空比调制的ECPT系统能量信号并行传输技术[J].电工技术学报,2015,30(21):51-56.Su Yugang,Zhou Wei,Hu Aiguo,et al.A powersignal transmission technology for ECPT systems based on duty cycle modulation of square wave carrier[J].Transactions of China Electrotechnical Society,2015,30(21):51-56.
[21]苏玉刚,谢诗云,孙跃,等.基于双侧LC网络的ECPT系统及其参数设计方法:中国,201611086253.0[P].2017-5-10.
[22]Fei Lu,Hua Zhang,et al.A double-sided LC compensation circuit for loosely-coupled capacitive power transfer[J].IEEE Transactions on Power Electronics,2017,33(2):1633-1643.
[23]王焕菊,赵秋宇,王奎甫,等.基于复调制解调的MSK的实现方法[J].电力系统保护与控制,2008,36(15):23-26.Wang Huanju,Zhao Qiuyu,Wang Kuifu,et al.The implementation of MSK based on complex modulation and complex demodu Iation[J].Power System Protection and Control,2008,36(15):23-26.
[24]黄银龙,蔡伟,毛涛,等.具有格状网的电力线载波通信信道特性的分析[J].电力系统保护与控制,2014,42(11):1-6.Huang Yinlong,Cai Wei,Mao Tao,et al.Analysis of power-line communication channel characteristic of the network with mesh topology[J].Power System Protection and Control,2014,42(11):1-6.
[25]蔡伟,乐健,靳超,等.电力线载波通信信道建模技术综述[J].电力系统保护与控制,2012,40(10):149-154.Cai Wei,Le Jian,Jin Chao,et al.Overview of the channel modeling methods of power-line carrier communication[J].Power System Protection and Control,2012,40(10):149-154.
[26]Wang C S,Covic G,Stielau O H.Power transfer capability and bifurcation phenomena of loosely coupled inductive power transfer systems[J].IEEE Transactions on Industrial Electronics,2004,51(1):148-157.