以太网供电系统及其功率扩展技术研究  

Research on power over ethernet system and the technology of power expansion

作　　者：胡磊[1] 周永忠[2] 马皓[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027 [2]杭州中信网络自动化有限公司,浙江杭州310012

出　　处：《机电工程》2007年第11期53-56,共4页Journal of Mechanical & Electrical Engineering

基　　金：浙江省科技计划重点资助项目(2005C21016)

摘　　要：在IEEE 802.3af协议下,利用新型以太网供电电能控制管理芯片,给出了含供电设备(PSE)和受电设备(PD)的标准以太网供电(PoE)系统设计方案,并分析了以太网供电原理和工作过程。给出了一种基于多变压器并联的以太网供电功率扩展方案,并给出了适应于扩展后功率的功率分级方案,解决了供电功率扩展问题,有利于提高以太网供电的应用范围。By means of novel manage control chip of power over ethernet, the system design strategy of standard power over ethernet （PoE） constructed by power sourcing equipment （PSE） and power device （PD） was proposed based on IEEE 802.3af protocol, and the principle and working process of ethernet power supply were analyzed. The power expansion plan of power over ethernet was presented based on multi-transformer paralleling. Correspondingly the power classification strategy suitable for expanded power is given, which solves the problem of power expansion and improves the application range of power over ethernet.

关 键 词：以太网供电 IEEE 802.3af协议 供电设备 受电设备 

分 类 号：TN915[电子电信—通信与信息系统]