变负载ICPT系统电能与信号反向同步传输方法  

Study on Power Forward and Signal Reverse Transmission in Load Changing ICPT System

作　　者：夏晨阳[1] 李玉华[1] 雷轲[1] 柳玉玲[1] 陈国平[1] 

机构地区：[1]江苏省煤矿电气与自动化工程实验室(中国矿业大学),江苏省徐州市221008

出　　处：《中国电机工程学报》2017年第6期1857-1866,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51307173);江苏省自然科学基金项目(BK20130188);江苏省煤矿电气与自动化工程实验室建设项目(2014KJZX05)~~

摘　　要：为满足感应耦合电能传输(inductively coupled power transfer,ICPT)系统在实现电能正向无线传输的同时,对副边电路状态信息的采集与反向传输,基于ICPT系统电能耦合传输通道,提出了一种在负载变化情况下,电能与信号反向同步传输ICPT系统,并对其控制方法进行了深入研究。该系统在副边增加信号调制电容,检测负载大小以确定具体的信号调制方案,通过切入与切出该调制电容以改变原边电流波形包络,进而将数字信号调制到系统中,这样原边在发射电能的同时接收来自副边的状态信息,最后通过设计信号解调机构,复原信号。首先介绍了ICPT系统电能与信号同步传输原理,在此基础上,提出电能与信号反向同步传输ICPT系统;然后,通过对该系统进行建模分析得到负载变化情况下不同的信号调制策略,并对系统变负载情况下系统特性进行了分析和研究;最后,针对理论分析进行了仿真与实验验证,实验实现了ICPT系统在电能正向传输情况下的信号的反向低误码率传输。该研究结果可以为ICPT系统电能与信号反向同步传输系统的设计与研究提供参考。In order to achieve power forward transmission and the secondary state information in the inductively coupled power transfer （ICPT） system, based on ICPT power channel, power forward and signal reverse transmission in load changing ICPT system was proposed in this paper, additionally, the control method of this system was studied deeply. The signal modulation capacitor was added into secondary side of this system to change the primary current RMS, the specific signal modulation strategy was determined by detecting the load, and then the digital signal was modulated into the system, so the primary side emitted power and received feedback information from the secondary side at the same time, and finally signal was reset through the signal demodulating means. The principle of power forward and signal reverse transmission in ICPT system was firstly introduced in this paper; and then the signal modulation strategy with the load changing was analyzed in detail, besides, power and efficiency characteristics of the system with varying load were analyzed deeply; finally, simulation and experiment verified its available, the findings had great significance on the design and study of ICPT system with power and signal synchronous transmission.

关 键 词：感应耦合电能传输系统 变负载 信号 反向 同步 

分 类 号：TM724[电气工程—电力系统及自动化]