磁浮车间隙传感器无线供电与信号同步传输方法  

Simultaneous Wireless Power Supply and Signal Transmission Method for Maglev Vehicle Gap Sensors

作　　者：靖永志[1,2] 冯伟 王森[1,2] 谯柯 鲁林海[2,3] JING Yongzhi;FENG Wei;WANG Sen;QIAO Ke;LU Linhai(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,China;MOE Key Laboratory of Maglev Technology and Maglev Train,Southwest Jiaotong University,Chengdu 611756,China;Tangshan Graduate School,Southwest Jiaotong University,Tangshan 063000,China)

机构地区：[1]西南交通大学电气工程学院,四川成都611756 [2]西南交通大学磁浮技术与磁浮列车教育部重点实验室,四川成都611756 [3]西南交通大学唐山研究生院,河北唐山063000

出　　处：《西南交通大学学报》2023年第4期965-974,共10页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金(52077183)。

摘　　要：为满足磁浮车悬浮间隙传感器在供电和信号传输方面的需求,提出了一种无线电能与信号全双工同步传输方法.首先,建立悬浮间隙传感器无线能量与信号全双工同步传输系统,在能量回路中采用S/LCC补偿结构以实现稳压效果,并在信号接收回路采用LC并联支路抑制同侧信号载波干扰;其次,对系统电能传输特性和信号传输特性进行了分析;然后,重点分析了信号传输电压增益、能量传输对信号传输的干扰以及双向信号传输之间的串扰,得出系统参数对系统传输特性影响的规律;最后,搭建20 W的实验平台进行实验验证.实验结果表明:信号接收回路中采用的LC并联支路可有效消除信号之间的串扰,能量传输对信号传输影响较小,验证了所提拓扑结构可实现无线供电、传感器控制指令下发以及间隙信号上传的全双工同步传输.In order to meet the demand for power supply and signal transmission for maglev vehicle gap sensors,a full-duplex simultaneous wireless power and signal transmission(SWPST)method was proposed.Firstly,the full-duplex SWPST system of the maglev gap sensors was established.The S/LCC compensation structure was adopted in the power circuit to stabilize the voltage,and the LC parallel branch was used in the signal receiving circuit to suppress ipsilateral signal carrier interference.Secondly,the power and signal transmission characteristics of the system were analyzed respectively.Then,the voltage gain of signal transmission,the interference of power transmission on signal transmission,and the crosstalk between bidirectional signal transmission were analyzed.In addition,some laws about the influence of system parameters on the transmission characteristics of the system were obtained.Finally,an experimental platform of 20 W was built.The experimental results show that the LC parallel branch in the signal receiving circuit can effectively eliminate the crosstalk between signals,and power transmission has less impact on signal transmission.It is verified that the proposed topology can realize wireless power supply and full-duplex simultaneous transmission of distributing control commands and uploading gap signals for the sensors.

关 键 词：无线电能传输 共享通道传输 全双工通信 间隙传感器 

分 类 号：TM724[电气工程—电力系统及自动化]