A Bidirectional Buck-Boost Converter-Based Switching Ripple Communication Strategy for Intelligent Street Lighting Systems

IF 1.7

Power Electronics and Drives Pub Date : 2021-01-01 DOI:10.2478/pead-2021-0016

Yixuan Zhang, Yihua Hu, Zion Tse, Yuwei Liu, Jiamei Deng, Hui Xu, Yangang Wang, Wei Li

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Abstract

Abstract The light-emitting diode (LED) is an essential component of intelligent street lighting (ISL) systems. An efficient ISL system can not only reduce power consumption by planning LED illuminating time but also reduce maintenance costs through a high degree of automation. In this paper, a buck-boost converter is used to realise composite transmission of power and signals for an ISL system. The power is modulated by the pulse width modulation (PWM) approach, and the switching ripple generated in the PWM process is utilised as the carrier of the signals transmitted between the remote-control centre and the slave nodes. Moreover, the proposed model involves a ‘request to send (RTS)/confirm to send (CTS)’ mechanism to avoid signal conflicts. Compared with the conventional power line communication (PLC) approach, the proposed transmission scheme has the advantages of simple circuit structure and simple system wiring. Additionally, a simulation model built in MATLAB/Simulink proves the designed transmission method has strong anti-noise ability.

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基于双向降压-升压变换器的智能路灯开关纹波通信策略

发光二极管(LED)是智能街道照明(ISL)系统的重要组成部分。高效的ISL系统不仅可以通过规划LED照明时间来降低功耗，还可以通过高度自动化来降低维护成本。本文采用降压升压变换器实现了ISL系统功率和信号的复合传输。采用脉宽调制(PWM)方法对功率进行调制，并利用PWM过程中产生的开关纹波作为远程控制中心与从节点之间传输信号的载体。此外，该模型还包含了一个“请求发送(RTS)/确认发送(CTS)”机制，以避免信号冲突。与传统的电力线通信(PLC)方式相比，所提出的传输方案具有电路结构简单、系统布线简单等优点。此外，在MATLAB/Simulink中建立的仿真模型证明了所设计的传输方式具有较强的抗噪声能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Power Electronics and Drives

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