@inproceedings{5b9b29ac04904fad83835b08d8739d79,
title = "A Magnetic Field Energy Harvester to Power Micro-power Sensors on the Freight Train for Railway Application",
abstract = "Power supply for monitoring sensors on freight trains is a big challenge in the railway system. It is urgent to find a low-cost and convenient supply source to power on-vehicle sensors. This paper proposes a magnetic field-based energy harvester (EH) to power the micro-power sensors for condition monitoring at the bottom of the freight car. The proposed EH system uses the magnetic field introduced by the rail track current, which can provide a continuous and stable source for sensors in the moving condition. Firstly, the basic principle and the basic model of the proposed EH system are analyzed. The key parameters to design the EH system are classified and discussed, such as winding number, wire diameter, and core diameter. Secondly, the finite element simulation tool analyzes the influence of eddy current and magnetic field distribution caused by the metal object under the vehicle. The saturation limitation of the magnetic core is also considered to guide system design. Finally, an experimental setup is conducted and a receiver coil with 1000 turns is fabricated at a distance of 80mm above the rail. The upper limit of the output power of the coil under the steel plate is 0.48 W. {\textcopyright} 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.",
keywords = "Finite element analysis, Magnetic field energy harvesting, Railway system, Sensor power",
author = "Jin Tao and Bo Luo and Yongchao Wang and Zhuling Wang and Ruikun Mai",
year = "2023",
doi = "10.1007/978-981-99-0631-4\_20",
language = "English",
isbn = "978-981-99-0630-7",
series = "Lecture Notes in Electrical Engineering",
publisher = "Springer Singapore",
pages = "190--198",
editor = "Chengbin Ma and Yiming Zhang and Siqi Li and Lei Zhao and Ming Liu and Pengcheng Zhang",
booktitle = "The Proceedings of 2022 International Conference on Wireless Power Transfer (ICWPT 2022)",
address = "Singapore",
edition = "1",
note = "International Conference on Wireless Power Transfer, ICWPT 2022 ; Conference date: 02-12-2022 Through 05-12-2022",
}