变负载ICPT系统电能与信号反向同步传输方法

发布时间：2018-08-26 20:23

【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。
[Abstract]:In order to meet the requirements of the induction coupled power transmission (inductively coupled power transfer,ICPT) system, while realizing the forward wireless transmission of electric energy, the state information of the secondary circuit is collected and transmitted in reverse direction. Based on the ICPT system, the coupled power transmission channel is used. In this paper, a reverse synchronous transmission ICPT system for power and signal is proposed, and its control method is deeply studied. The system increases the signal modulation capacitance at the secondary edge, detects the load size to determine the specific signal modulation scheme, changes the envelope of the original current waveform by cutting in and cutting out the modulation capacitance, and then modulates the digital signal into the system. In this way, the original side receives the state information from the secondary side while transmitting the electric energy. Finally, the signal demodulation mechanism is designed to recover the signal. This paper first introduces the principle of synchronous transmission between power and signal in ICPT system, then proposes a reverse synchronous transmission ICPT system of power and signal, and then, by modeling and analyzing the system, different signal modulation strategies are obtained under the condition of load change. The characteristics of the system are analyzed and studied under the condition of variable load. Finally, the simulation and experimental verification of the theoretical analysis are carried out, and the reverse low bit error rate (LBER) transmission of the signal in the ICPT system is realized in the case of forward power transmission. The results can be used as a reference for the design and research of ICPT power and signal reverse synchronous transmission system.
【作者单位】：江苏省煤矿电气与自动化工程实验室(中国矿业大学);
【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)~~
【分类号】：TM724

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