基于功率控制环扰动的DC-DC变换器能量信息一体化研究
针对实现DC-DC变换器之间的信息交互较为复杂的问题,提出了一种基于功率控制环扰动实现其能量信息一体化的方法.通过在DC-DC变换器的传统功率控制环中叠加二进制频移键控(binary frequency shift keying,2FSK)信号作为扰动,将数据信息叠加到传统脉冲宽度调制(pulse-width modulation,PWM)信号中,使得该PWM信号同时包含数据信息,实现能量信息一体化.首先,给出基于2FSK的功率/数据双载波调制以及实时的滑动离散傅里叶变换(sliding discrete Fourier transform,SDFT)解调方案.然后,通过对Buck变换器的能量...
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| Published in | 电力系统保护与控制 Vol. 52; no. 7; pp. 149 - 156 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
河北省电力物联网技术重点实验室(华北电力大学),河北保定 071003%华北电力大学电气与电子工程学院,北京 102206
01.04.2024
华北电力大学电气与电子工程学院,北京 102206 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-3415 |
| DOI | 10.19783/j.cnki.pspc.230885 |
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| Abstract | 针对实现DC-DC变换器之间的信息交互较为复杂的问题,提出了一种基于功率控制环扰动实现其能量信息一体化的方法.通过在DC-DC变换器的传统功率控制环中叠加二进制频移键控(binary frequency shift keying,2FSK)信号作为扰动,将数据信息叠加到传统脉冲宽度调制(pulse-width modulation,PWM)信号中,使得该PWM信号同时包含数据信息,实现能量信息一体化.首先,给出基于2FSK的功率/数据双载波调制以及实时的滑动离散傅里叶变换(sliding discrete Fourier transform,SDFT)解调方案.然后,通过对Buck变换器的能量信息一体化模型进行小信号建模与分析可知,降低输入阻抗可提升通信的信噪比.最后搭建一个由两个Buck变换器并联的实验装置进行验证.实验结果表明在稳态和负载突变的工况下均可实现3 kb/s的稳定通信,验证了所提方法的可行性.该方法使得DC-DC变换器能同时进行功率变换和数据传输,提升数字化和智能化水平. |
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| AbstractList | 针对实现DC-DC变换器之间的信息交互较为复杂的问题,提出了一种基于功率控制环扰动实现其能量信息一体化的方法.通过在DC-DC变换器的传统功率控制环中叠加二进制频移键控(binary frequency shift keying,2FSK)信号作为扰动,将数据信息叠加到传统脉冲宽度调制(pulse-width modulation,PWM)信号中,使得该PWM信号同时包含数据信息,实现能量信息一体化.首先,给出基于2FSK的功率/数据双载波调制以及实时的滑动离散傅里叶变换(sliding discrete Fourier transform,SDFT)解调方案.然后,通过对Buck变换器的能量信息一体化模型进行小信号建模与分析可知,降低输入阻抗可提升通信的信噪比.最后搭建一个由两个Buck变换器并联的实验装置进行验证.实验结果表明在稳态和负载突变的工况下均可实现3 kb/s的稳定通信,验证了所提方法的可行性.该方法使得DC-DC变换器能同时进行功率变换和数据传输,提升数字化和智能化水平. |
| Abstract_FL | To address the complex issue of information exchange between DC-DC converters,this paper proposes a method that integrates power and information by introducing perturbations into the power control loop.By superimposing binary frequency shift keying(2FSK)signals as perturbations in the traditional power control loop of the DC-DC converters,data information is embedded into the conventional pulse-width modulation(PWM)signal,enabling the PWM signal to simultaneously carry data information,thus achieving the integration of power and information.First,this paper presents a power/data dual carrier modulation scheme based on 2FSK and a real-time sliding discrete Fourier transform(SDFT)demodulation scheme.Subsequently,it is evident from the small-signal modeling and analysis of the power-information integration model of the Buck converter that reducing the input impedance can enhance the signal-to-noise ratio of communication.Finally,an experimental set-up consisting of two parallel Buck converters is constructed for validation.Experimental results demonstrate stable communication at a rate of 3 kb/s in steady-state and load transient conditions,confirming the feasibility of the proposed method.This method enables DC-DC converters to simultaneously perform power conversion and data transmission,thereby enhancing digitization and intelligence levels. |
| Author | 祝贺 曹旺斌 胡正伟 谢志远 |
| AuthorAffiliation | 华北电力大学电气与电子工程学院,北京 102206;河北省电力物联网技术重点实验室(华北电力大学),河北保定 071003%华北电力大学电气与电子工程学院,北京 102206 |
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| Author_FL | HU Zhengwei CAO Wangbin ZHU He XIE Zhiyuan |
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| Author_xml | – sequence: 1 fullname: 祝贺 – sequence: 2 fullname: 谢志远 – sequence: 3 fullname: 曹旺斌 – sequence: 4 fullname: 胡正伟 |
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| Keywords | 扰动信号 perturbation signal 滑动傅里叶变换 功率/数据双载波调制 power-information integration 二进制频移键控 sliding discrete Fourier transform power/data dual carrier modulation 能量信息一体化 binary frequency shift keying(2FSK) |
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| PublicationTitle | 电力系统保护与控制 |
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| Publisher | 河北省电力物联网技术重点实验室(华北电力大学),河北保定 071003%华北电力大学电气与电子工程学院,北京 102206 华北电力大学电气与电子工程学院,北京 102206 |
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| Title | 基于功率控制环扰动的DC-DC变换器能量信息一体化研究 |
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