论文标题
铁路中的磁场能量收获
Magnetic Field Energy Harvesting in Railway
论文作者
论文摘要
磁场能量收集（MFEH）是一种系统可以利用环境，交替的磁场以清除能量的方法。本文介绍的是该概念的新颖应用，该概念针对电气铁路中铁路电流周围的磁场。由于其非侵入性，该方法有可能被广泛部署为低成本轨道条件监测系统的一部分，以增加寿命并减少维护要求。在这项工作中，铁路中MFEH的生存能力是通过实验证实的 - 在受控的实验室环境以及挪威铁路沿线的原地评估了两种不同的配置。当放置在实验室中带有200 A的铁路的模拟部分附近时，系统的功率输出在50 Hz时为40.5 MW，在16 2/3 Hz时为4.15 MW。在现场，原型系统从单个货运列车中收获了109 MJ，在中等程度的货运位置中，估计的每日能量输出估计为1.14 J。有人认为，该方法确实可以消除对电池更换的需求，并可能无限期地增加了节能，电池供电的状态监测系统的寿命。
Magnetic field energy harvesting (MFEH) is a method by which a system can harness an ambient, alternating magnetic field in order to scavenge energy. Presented in this article is a novel application of the concept aimed at the magnetic fields surrounding the rail current in electrified railway. Due to its non-invasive nature, the approach has the potential to be widely deployed as part of low-cost trackside condition monitoring systems in order to increase lifetime and reduce maintenance requirements. In this work, the viability of MFEH in railway is substantiated experimentally -- two different configurations are assessed both in a controlled laboratory environment, as well as in situ along Norwegian railway. When placed near an emulated section of railway carrying 200 A in the laboratory, the power output of the system is up to 40.5 mW at 50 Hz and 4.15 mW at 16 2/3 Hz. In the field, the prototype system harvests 109 mJ from a single freight train passing by, rendering an estimated daily energy output of 1.14 J in a moderately-trafficked location. It is argued that the approach could indeed eliminate the need for battery replacements, and potentially increase the lifetime of an energy-efficient, battery-powered condition monitoring system indefinitely.
