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

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摘要建立电场耦合无线电能传输系统(ECPT)数学模型,并分析其信道的频域特性。在该特性基础上,针对信道频带宽度有限以及信号传递速率低等问题,提出一种基于方波载波占空比调制的能量信号并行传输方法,并给出具体信号调制与解调流程。该方法进一步扩展了信道带宽,简化了信号调制难度,提升了信号传递速率,降低了信源开关频率,并简化了信号及能量波形的分离环节。通过构建Matlab仿真模型并搭建硬件实验装置,验证了本方案的可行性与有效性。

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	苏玉刚
	周玮
	呼爱国
	孙跃
	陈龙

关键词 ：无线电能传输, 电场耦合, 能量信号并行传输, 方波载波, 占空比调制

Abstract：A time domain transient mathematic model is built to analyze the channel frequency characteristics of the electric-field coupled power transfer (ECPT) system.To increase the channel bandwidth and signal rate,a new power-signal parallel transmission technology based on duty cycle modulation of the square wave carrier is proposed.This paper presents the specific signal modulation and demodulation flow chart.The proposed method can expand the channel bandwidth,reduce the difficulty of modulation and separation of power-signal waveform,enhance the signal rate,and reduce the source frequency.Both the Matlab simulation and experimental results prove the feasibility and effectiveness of this method.

Key words： Wireless power transfer electric-field coupling power-signal parallel transmission square wave carrier duty cycle modulation

收稿日期: 2015-05-30 出版日期: 2015-11-12

PACS:

TM724

基金资助:国家自然科学基金(51477020、51277192)和重庆市基础与前沿计划(cstc2013jcyA0235)资助项目。

通讯作者: 苏玉刚男,1962年生,博士,教授,研究方向为无线电能传输技术、电力电子技术、控制理论应用与自动化系统集成。

作者简介: 周玮男,1990年生,博士研究生,研究方向为无线电能传输技术和电力电子技术。

引用本文:

苏玉刚,周玮,呼爱国,孙跃,陈龙. 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,Sun Yue,Chen Long. A Power-signal Parallel Transmission Technology for ECPT Systems Based on Duty Cycle Modulation of Square Wave Carrier. Transactions of China Electrotechnical Society, 2015, 30(21): 51-56.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I21/51

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