中国电机工程学报2024，Vol.44Issue(14)：5680-5692,中插20,14.DOI:10.13334/j.0258-8013.pcsee.240322
基于联合功率量/载波调制的DC-DC变换器功率/数据复合传输方法
A Method of Power/Data Multiplexing Transmission in DC-DC Converters Based on Joint Power/Carrier Modulation
摘要
Abstract
DC-DC converters can simultaneously perform power conversion and data transmission.To address the challenge of lower communication rates limiting the application of power/data multiplexing transmission(PDMT),this paper proposes a novel scheme of joint power/carrier modulation(JPCM).Differing from traditional binary PDMT approaches,JPCM concurrently applies 2FSK modulation to both power and carrier,enabling parallel transmission of two data streams.This can be regarded as a quaternary FSK,effectively enhancing communication rates.In comparison to traditional quaternary PDMT schemes,the JPCM approach requires half the number of bandpass filters in the demodulation stage,resulting in reduced software overhead.First,the feasibility of PDMT is theoretically demonstrated.Subsequently,it configures different symbols by four distinct voltage ripple frequencies,and designs the schemes of JPCM encompassing high and low data bit modulation and data demodulation based on sliding discrete Fourier transform.Furthermore,the impact of output reference voltage transients on communication is critically analyzed,and dynamically adjusting the thresholds proves effective in suppressing symbol errors.Finally,an experimental setup consisting of two parallel Buck converters is established.Experimental results demonstrate that a communication rate of 20 kb/s can be achieved under steady-state,load transient,and output reference voltage transient conditions by PDMT,verifying the effectiveness of this scheme.关键词
DC-DC变换器/功率/数据复合传输(PDMT)/并行传输/通信速率/联合功率量/载波调制(JPCM)Key words
DC-DC converters/power/data multiplexing transmission(PDMT)/parallel transmission/communication rate/joint power/carrier modulation(JPCM)分类
信息技术与安全科学引用本文复制引用
祝贺,谢志远,曹旺斌,胡正伟,白宗龙..基于联合功率量/载波调制的DC-DC变换器功率/数据复合传输方法[J].中国电机工程学报,2024,44(14):5680-5692,中插20,14.基金项目
国家自然科学基金项目(52177083,62001166). Project Supported by National Natural Science Foundation of China(52177083,62001166). （52177083,62001166）
